HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: Wrapper cannot find servlet class LoginServlet or a class it depends on
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Unknown Source)
root cause java.lang.ClassNotFoundException: LoginServlet
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1386)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Unknown Source)
root cause java.lang.ClassNotFoundException: LoginServlet
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1386)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1232)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.27 logs.
解决方案 »
- 查询出mysql 的double类型字段报错
- Java报表软件内置JS的使用之四
- 在MyEdipse中写了一个session怎么不好使
- 紧急求救,在线等...JAVA程序产生的致命错误,自己生成一个hs_err_pid***.log文件!!!请教是哪里出问题了?
- 新手求助
- 求一个下拉框联动实例(非AJAX)
- 有没有什么类,把普通字符串中的‘<’,‘>’等字符转换成xml字符?
- jsp空间?
- 一个变态的错误提示,3192 肖勇 420104401130041 java.sql.SQLException: [Microsoft][ODBC 驱动程序管理器] 无效的游标状态
- Ajax通过jsonp实现跨域访问,访问成功但走error不走success的的问题解决
- java.sql.SQLException: Column 'gp_id' not found.错误
- 判断Session值后如何执行Java Script
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%
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>登陆</title>
<style type="text/css">
<!--
.STYLE4 {font-size: 12px; font-weight: bold; }
.STYLE5 {color: #FF0000}
.STYLE6 {
font-size: 12px;
color: #00FF00;
font-weight: bold;
}
-->
</style>
</head>
<body>
<form id="form1" name="form1" method="post" action="servlet/LoginServlet">
<table width="200" border="1" cellspacing="0" cellpadding="0">
<caption>
<span class="STYLE5">用户登录 </span>
</caption>
<tr>
<td height="47" bgcolor="#CCCCCC"><p align="left"><span class="STYLE4">用户学号</span>:
</p>
<p>
<input name="usrNum" type="text" id="usrNum" size="18" maxlength="8" />
</p></td>
</tr>
<tr>
<td bgcolor="#CCCCCC"><p><span class="STYLE4">用户密码</span>:</p>
<p>
<input name="usrPwd" type="password" id="usrPwd" size="18" maxlength="16" />
</p></td>
</tr>
<tr>
<td align="center" bgcolor="#CCCCCC"><div align="left"><span class="STYLE4">用户类型</span>
<select name="usrStyle" size="1" id="usrStyle">
<option value="student" selected="selected">学生</option>
<option value="admin">管理员</option>
</select>
</div></td>
</tr>
<tr>
<td align="center" bgcolor="#CCCCCC"><input name="Submit" type="submit" value="提交" />
<input type="reset" name="Submit2" value="重设" /></td>
</tr>
<tr>
<td height="22" align="center" bgcolor="#FFFFFF"><p align="left"><a href="Register/Register.jsp" target="_blank" class="STYLE6">注册</a><span class="STYLE4"> 期待你的加入</span></p></td>
</tr>
</table>
</form>
</body>
</html>
package com.network.servlet;
/**
* 处理用户登录的servlet,通过调用Loginservice处理用户信息
*/
import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import com.network.service.LoginService;
import com.network.bean.*;
public class LoginServlet extends HttpServlet { public LoginServlet() {
super();
}
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
} public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { response.setContentType("text/html");
request.setCharacterEncoding("gbk");
// 用户学号
String usrNum=request.getParameter("usrNum");
// 用户密码
String usrPwd=request.getParameter("usrPwd");
// 用户类型
String usrStyle=request.getParameter("usrStyle");
// 下一步要跳转到的地址
String toJsp="../home/Home.jsp";
if(usrStyle==""){//防止意外事件发生
request.setAttribute("error", "用户类型出错!");
toJsp="../Login/LoginError.jsp";
}
else {
if(usrStyle.equals("student")){//如果用户类型是学生
Student stu=new Student();
if((stu=LoginService.studentLogin(usrNum, usrPwd))!=null){//判断用户是否通过验证,如果通过
request.setAttribute("User", stu);
toJsp="../home/Home.jsp";
}
else {//没有通过,
request.setAttribute("error", "学号或密码错误,请重新输入!");
toJsp="../Login/LoginError.jsp";
}
}
else if(usrStyle.equals("admin")){//如果用户类型是管理员
}
}
// 将请求转发到toJsp代表的页面
RequestDispatcher dispatcher=request.getRequestDispatcher(toJsp);
dispatcher.forward(request,response);
} /**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}}
<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">
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>LoginServlet </servlet-name>
<servlet-class>com.network.servlet.LoginServlet </servlet-class>
</servlet> <servlet-mapping>
<servlet-name>LoginServlet </servlet-name>
<url-pattern>/servlet/LoginServlet </url-pattern>
</servlet-mapping>
</web-app>action 对应LoginServlet 就行了!!