1.jsp-servlet-struct 配置

浏览数：36 / 时间：2015年06月09日

2.index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

</head>

<body>
<body>
    <form action="/test_servlet/TestServlet" method="post">
        姓名：<input type="text" name="username"><br>
        <input type="submit" value="提交"><br>
    </form>
</body>
</html>

3.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">
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
   <servlet>
      <servlet-name>TestServlet</servlet-name>
      <servlet-class>com.powernode.servlet.TestServlet</servlet-class>
</servlet>
<servlet-mapping>
      <servlet-name>TestServlet</servlet-name>
      <url-pattern>/TestServlet</url-pattern>
</servlet-mapping>
</web-app>

3.Testservlet.java

package com.powernode.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class TestServlet extends HttpServlet{

    protected void service(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        System.out.println("------2--");
        super.service(req, resp);
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        System.out.println("------3--");
        super.doGet(req, resp);
    }

    /**
     * 12121212121
     */
    private static final long serialVersionUID = 1L;

    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        // TODO Auto-generated method stub
        //super.doPost(req, resp);
        String username=req.getParameter("username");
        UserManager usermanager = new UserManager();
        usermanager.add(username);
        req.getRequestDispatcher("/add_success.jsp").forward(req,resp);
    }

}

运行结果：