struts2问题

悬赏：10 发布时间：2008-07-05 提问人：dixuexiongying (初级程序员)

本人在测试Struts2.0中的表达式语言的时候,程序频频报空指针的错误,可是检查却好像并没有什么错误啊!还真是郁闷了,现在贴出来想和大家一起探讨一下:

首先是一个Book类:

package tutorial.model;

public class Book
{
    private String isbn;
    private String title;
    private double price;

    public Book()
    {
    }

    public Book(String isbn,String title,dobule price)
    {
        this.isbn = isbn;
        this.title = title;
        this.price = price;
    }

    public String getIsbn()
    {
        return isbn;
    }

    public void setIsbn(String isbn)
    {
          this.isbn = isbn;
    }

      public double getPrice()
      {
          return price;
      }

      public void setPrice(double price)
      {
          this.price = price;
      }

      public String getTitle()
      {
              return title;
      }

      public void setTitle(String title)
      {
          this.title = title;
      }
}

Action类: BookAction.java

package tutorial.action

import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.SessionAware;
import org.apache.struts2.util.ServletContextAware;

import tutorial.model.Book;

import com.opensymphony.xwork2.ActionSupport;

public class OgnlAction extends ActionSupport implements ServletRequestAware,SessionAware,ServletContextAware
{
    private static final long serialVersionUID = 1L;

    private HttpServletRequest request;
    private Map <String,String> session;
    private ServletContext application;
    private List <Book> books;

    public void setServletRequest(HttpServletRequest request)
    {
          this.request = request;
    }

    @SuppressWarnings("unchecked")
    public void setSession(Map session)
    {
          this.session = session;
    }

    public void setServletContext(ServletContext application)
    {
        this.application = application;
    }

    public List <Book> getBooks()
    {
        return books;
    }

@Override
public String execute()
{
        request.setAttribute("userName","Max From request");
        session.put("userName","Max From session");
        application.setAttribute("userName","Max From application");

        books = new LinkedList <Book>();
        books.add(new Book("978-0735619678", "Code Complete, Second Edition", 32.99));
        books.add(new Book("978-0596007867", "The Art of Project Management", 35.96));
        books.add(new Book("978-0201633610", "Design Patterns: Elements of Reusable Object-Oriented Software", 43.19));
        books.add(new Book("978-0596527341", "Information Architecture for the World Wide Web: Designing Large-Scale Web Sites", 25.19));
        books.add(new Book("978-0735605350", "Software Estimation: Demystifying the Black Art", 25.19));

        return SUCCESS;

}
}

Ognl.jsp

<%@ page language="java" contentType="text/html;charset=utf-8" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href=" <%=basePath%>">

    <title>Struts OGNL Demo </title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">


</head>

<body>
    <h3>访问OGNL上下文和Action上下文 </h3>
    <p>parameters: <s:property value="#parameters.userName"/> </p>
    <p>request.userName: <s:property value="#request.userName"/> </p>
    <p>session.userName: <s:property value="#session.userName"/> </p>
    <p>application.userName: <s:property value="#application.userName"/> </p>
    <p>attr.userName: <s:property value="#attr.userName"/> </p>
    <hr/>
    <h3>用于过滤和投影集合 </h3>
    <p>Books more than $35 </p>
    <ul>
    <s:iterator value="books.{?#this.price>35}">
      <li> <s:property value="title"/>-$ <s:property value="price"/> </li>
    </s:iterator>
    </ul>
    <p>
    The price of "Code Complete,Second Edition"is: <s:property value="books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]"/>
    </p>
    <hr/>
    <h3>构造Map </h3>
    <s:set name="foobar" value="#{'foo1':'bar1','foo2':'bar2'}"/>
    <p>The value of key "foo1" is <s:property value="#foobar['foo1']"/> </p>
</body>
</html>

web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<display-name>Struts2 OGNL </display-name>

<filter>
<filter-name>struts-cleanup </filter-name>
<filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp </filter-class>
</filter>

<filter-mapping>
<filter-name>struts-cleanup </filter-name>
<url-pattern>/* </url-pattern>
</filter-mapping>

<filter>
<filter-name>struts2 </filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher </filter-class>
</filter>

<filter-mapping>
<filter-name>struts2 </filter-name>
<url-pattern>/* </url-pattern>
</filter-mapping>
</web-app>

struts.xml
<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
<constant name="struts.devMode" value="true"/>
<package name="Struts-OGNL-DEMO" extends="struts-default">
<action name="Ognl" class="tutorial.action.OgnlAction">
    <result>/Ognl.jsp </result>
</action>
</package>
</struts>

全部错误信息:

2008-7-5 11:17:13 org.apache.catalina.core.AprLifecycleListener init
信息: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Program Files\Java\jdk1.5.0_06\bin;D:\Program Files\apache-tomcat-6.0.10\bin
2008-7-5 11:17:14 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8087
2008-7-5 11:17:14 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 781 ms
2008-7-5 11:17:14 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2008-7-5 11:17:14 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.10
2008-7-5 11:17:15 org.apache.catalina.core.ApplicationContext log
信息: ContextListener: contextInitialized()
2008-7-5 11:17:15 org.apache.catalina.core.ApplicationContext log
信息: SessionListener: contextInitialized()
2008-7-5 11:17:16 com.opensymphony.xwork2.config.providers.XmlConfigurationProvider register
信息: Parsing configuration file [struts-default.xml]
2008-7-5 11:17:16 com.opensymphony.xwork2.config.providers.XmlConfigurationProvider register
信息: Parsing configuration file [struts-plugin.xml]
2008-7-5 11:17:16 com.opensymphony.xwork2.config.providers.XmlConfigurationProvider register
信息: Parsing configuration file [struts.xml]
2008-7-5 11:17:16 org.apache.struts2.config.Settings getLocale
警告: Settings: Could not parse struts.locale setting, substituting default VM locale
2008-7-5 11:17:16 com.opensymphony.xwork2.config.impl.DefaultConfiguration$ContainerProperties setProperty
信息: Overriding property struts.i18n.reload - old value: false new value: true
2008-7-5 11:17:16 com.opensymphony.xwork2.config.impl.DefaultConfiguration$ContainerProperties setProperty
信息: Overriding property struts.configuration.xml.reload - old value: false new value: true
2008-7-5 11:17:17 com.opensymphony.xwork2.util.ObjectTypeDeterminerFactory <clinit>
信息: Setting DefaultObjectTypeDeterminer as default ...
2008-7-5 11:17:17 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8087
2008-7-5 11:17:17 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009
2008-7-5 11:17:17 org.apache.jk.server.JkMain start
信息: Jk running ID=0 time=0/47 config=null
2008-7-5 11:17:17 org.apache.catalina.startup.Catalina start
信息: Server startup in 3328 ms
2008-7-5 11:17:27 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)f\
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 11:17:27 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 11:17:27 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 11:17:27 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:18 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:18 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:19 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:19 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:22 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:22 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:22 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:22 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:23 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:24 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:24 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:24 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:24 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:310)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:190)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:208)
at org.apache.struts2.components.Component.findValue(Component.java:254)
at org.apache.struts2.components.IteratorComponent.start(IteratorComponent.java:210)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fiterator_005f0(Ognl_jsp.java:257)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.title=='Code Complete,Second Edition'}.{price}[0]' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at com.opensymphony.xwork2.util.OgnlUtil.getValue(OgnlUtil.java:194)
at com.opensymphony.xwork2.util.OgnlValueStack.findValue(OgnlValueStack.java:238)
at org.apache.struts2.components.Property.start(Property.java:136)
at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:54)
at org.apache.jsp.Ognl_jsp._jspx_meth_s_005fproperty_005f7(Ognl_jsp.java:339)
at org.apache.jsp.Ognl_jsp._jspService(Ognl_jsp.java:124)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
at java.lang.Thread.run(Thread.java:595)
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: NOTE: Previous warning message was issued due to devMode set to true.
2008-7-5 16:30:25 com.opensymphony.xwork2.util.OgnlValueStack logLookupFailure
警告: Caught an exception while evaluating expression 'books.{?#this.price>35}' against value stack
java.lang.NullPointerException
at ognl.OgnlRuntime$ClassCache.get(OgnlRuntime.java:147)
at ognl.OgnlRuntime.getHandler(OgnlRuntime.java:1578)
at ognl.OgnlRuntime.getElementsAccessor(OgnlRuntime.java:1545)
at ognl.ASTSelect.getValueBody(ASTSelect.java:53)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)

采纳的答案

2008-07-05 congjl2002 (资深程序员)

struts.xml这个配置文件呢？
还有你在IE里通过什么访问的页面

提问者对于答案的评价：
谢谢你的回答

其他回答

帮小爱ding一下，struts2.0 懂的人解答

396615834 (初级程序员) 2008-07-05

是通过 action访问的吗？

congpeixue (初级程序员) 2008-07-06

待解决问题数: 361
已解决问题数: 1439
已关闭问题数: 3310

答题高手

ham 架构师 ( 100 - 1246 )
lggege 架构师 ( 99 - 1281 )
qichunren 资深程序员 ( 70 - 950 )
小疯子资深程序员 ( 69 - 852 )
congjl2002 资深程序员 ( 61 - 909 )
aidiyuxin 资深程序员 ( 47 - 668 )
zhai puhong 资深程序员 ( 43 - 680 )
llade 资深程序员 ( 42 - 746 )
wangxin0072000 高级程序员 ( 32 - 466 )
hjgundam 高级程序员 ( 30 - 442 )

struts2问题

悬赏：10 发布时间：2008-07-05 提问人：dixuexiongying (初级程序员)

采纳的答案

2008-07-05 congjl2002 (资深程序员)

其他回答

问答分类

Java

Ruby

AJAX

Microsoft .Net

综合技术

入门讨论

软件开发和项目管理

行业解决方案

厂商论坛

招聘求职

海阔天空

答题高手

问题频道帮助

悬赏：10 发布时间：2008-07-05 提问人：dixuexiongying (初级程序员)

采纳的答案

2008-07-05 congjl2002 (资深程序员)

问题答案可能在这里 → 寻找更多解答

其他回答

问答分类

答题高手

问题频道帮助