HTTP状态500 - 在Struts2应用程序中处理JSP页面时发生异常 [英] HTTP Status 500 - An exception occurred processing JSP page in Struts2 application

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问题描述

我正在学习Struts2并在托管我的应用程序时面临以下问题。
index.jsp 页面，有/ struts-tags示例< s：form>，< s：url> 等，在托管应用程序时抛出异常。

I am learning Struts2 and facing the below problem while hosting my application. The index.jsp page, having /struts-tags example <s:form>, <s:url> etc, is throwing exception when the application is hosted.

项目中使用的jar： 

common-lang3.jar
commons-fileupload-1.3.jar
commons-io-2.0.1.jar
commons-logging-1.1.3.jar
commons-logging-api-1.1.jar
freemarker-2.3.19.jar
javassist-3.11.0.GA.jar
ognl-3.0.6.jar
struts2-core-2.3.15.3.jar
xwork-core-2.3.15.3.jar

异常堆栈跟踪： 

    **HTTP Status 500 - An exception occurred processing JSP page /index.jsp at line 12**
    **type** Exception report
    **message** An exception occurred processing JSP page /index.jsp at line 12

    **description** The server encountered an internal error that prevented it from fulfilling this request.

    **exception**
    org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 12

    9: </head>
    10: 
    11: <body>
    12:    <s:form action="empinfo" method="post">
    13:       <s:textfield name="name" label="Name" size="20" />
    14:       <s:textfield name="age" label="Age" size="20" />
    15:       <s:submit name="submit" label="Submit" align="center" />


    Stacktrace:

 org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:521)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:412)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)

    **root cause**
    javax.servlet.ServletException: java.lang.NoSuchMethodError: org.apache.commons.lang3.StringUtils.containsIgnoreCase(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Z
        org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:865)
        org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
        org.apache.jsp.index_jsp._jspService(index_jsp.java:84)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)

    **root cause**
    java.lang.NoSuchMethodError: org.apache.commons.lang3.StringUtils.containsIgnoreCase(Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Z
        org.apache.struts2.views.util.DefaultUrlHelper.buildUrl(DefaultUrlHelper.java:180)
        org.apache.struts2.views.util.DefaultUrlHelper.buildUrl(DefaultUrlHelper.java:75)
        org.apache.struts2.views.util.DefaultUrlHelper.buildUrl(DefaultUrlHelper.java:70)
        org.apache.struts2.components.ServletUrlRenderer.renderFormUrl(ServletUrlRenderer.java:200)
        org.apache.struts2.components.Form.populateComponentHtmlId(Form.java:231)
        org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:801)
        org.apache.struts2.components.ClosingUIBean.start(ClosingUIBean.java:55)
        org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:53)
        org.apache.jsp.index_jsp._jspx_meth_s_005fform_005f0(index_jsp.java:104)
        org.apache.jsp.index_jsp._jspService(index_jsp.java:74)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:96)

index.jsp page：

index.jsp page:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
   pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Employee Form</title>
</head>

<body>
   <s:form action="empinfo" method="post">
      <s:textfield name="name" label="Name" size="20" />
      <s:textfield name="age" label="Age" size="20" />
      <s:submit name="submit" label="Submit" align="center" />
   </s:form>
</body>
</html>

struts.xml ：

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="helloworld" extends="struts-default">
      <action name="empInfo" class="com.tutorialspoint.struts2.EmployeeAction" method="execute">
            <result name="input">/index.jsp</result>
            <result name="success">/success.jsp</result>
      </action>
   </package>
</struts>

web.xml ：

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" 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>HelloWorldStruts2</display-name>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    <filter>
        <filter-name>struts2</filter-name>
        <!--<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>-->
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

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

请建议我如何解决此问题。

Please suggest how can I fix this issue.

推荐答案

似乎您的项目中部署了不完整的库jar。尝试从maven存储库下载所需的jar或在struts发行版 lib 文件夹中查找它们。

Seems you have incomplete library jars deployed in your project. Try to download required jars from maven repository or look up them in the struts distro lib folder. 

commons-lang3-3.1.jar

缺失。

参见如何创建maven项目。

这篇关于HTTP状态500 - 在Struts2应用程序中处理JSP页面时发生异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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