一个名为login.jsp的JSP登录页面:
<%@ page language="java" PageEncoding="GBK" contentType="text/html"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>Login.jsp</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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->  </head>
  
  <body>
   <form method="post" action="login.do">
   用户名: <input name="username" size="10" maxlength="20"><br> 
   &#23494;&#30721;&#65306;&nbsp; &nbsp;&nbsp;  <input name="pass" size="10" maxlength="20"><br>
   <input type="submit" value="提交" name="B1"> &nbsp;&nbsp; <input type="reset" value="重写" name="B2"> 
    </form>
  </body>
</html>
因为我想让这个页面提交的数据以GBK的方式来编码,所以我就在这个页面的<body></body>之间加了一段<%request.setCharacterEncoding("GBK")%>而提交的数据是交给一个Action来验证的。我开启TOMCAT来测试,出现“找不到 JspServletWrapper.handleJspException(Exception) 行: 440 的源"的异常,我就把段脚本去掉,结果还是不停的出现这个错误,这是为什么?

解决方案 »

  1.   

    login.do是否存在,路径是否正确
      

  2.   

    只要在浏览器上一加载login.jsp页面就会报我上面所说的错
    //LoginAction.java
    public class LoginAction extends Action 
    {
    public ActionForward execute(ActionMapping mapping, ActionForm form,
    HttpServletRequest request, HttpServletResponse response)throws Exception 
    { String username=request.getParameter("username");
              String pass=request.getParameter("pass");
                              if (username.equals("高")&&pass.equals("123"))
              return mapping.findForward("welcome");
              else
              return mapping.findForward("error");
            }
     }
    //struts-config.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
      <data-sources />
      <form-beans />
      <global-exceptions />
      <global-forwards >
      
      </global-forwards>
      <action-mappings >
        <action path="/login" type="wind.LoginAction">
          <forward name="input" path="/login.jsp" />
          <forward name="welcome" path="/welcome.jsp" redirect="true"/>
       <forward name="error" path="/error.jsp" redirect="true" />
        </action>  </action-mappings>  <message-resources parameter="org.wind.struts.ApplicationResources" />
    </struts-config>//web.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
      <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
          <param-name>config</param-name>
          <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <init-param>
          <param-name>debug</param-name>
          <param-value>3</param-value>
        </init-param>
        <init-param>
          <param-name>detail</param-name>
          <param-value>3</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
      </servlet>
      <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.do</url-pattern>
      </servlet-mapping>
    </web-app>