jsp+servlet 练习

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Login.jsp

<body>    <form action="ServletTest" method="post">    <table align="center">    <tr><td>name:<td><td><input type="text" name="name"><td><tr>    <tr><td>psw:<td><td><input type="text" name="psw"><td><tr>    <tr><td><td><td><input type="submit" value="提交"><td><tr>    </table>        </form>  </body>

通过index.jsp 用forward专向Login.jsp。

<jsp:forward page="/WEB-INF/Login.jsp"></jsp:forward>

在项目中创建一个servlet 类，继承HttpServlet，重写doGet()，doPost()

ServletTest.java

package com.scx.servlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class ServletTest extends HttpServlet{@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {// TODO Auto-generated method stubsuper.doGet(req, resp);}@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException {//req.setCharacterEncoding("utf-8"); 这种转换会乱码resp.setContentType("text/html;charset=UTF-8");String name = req.getParameter("name");String psw = req.getParameter("psw");PrintWriter out = resp.getWriter();if(name=="123"||name.equals("123")){if(psw=="123"||psw.equals("123")){out.println("登录成功，"+"欢迎"+name+"进入我的空间！");}}else{out.println("用户名或密码错误！");}}}

过程中出现了 HTTP method GET is not supported by this URL 这种错误，网上搜了好久，原来是我是用的POST传值，结果在ServletTest中，写到了doGet()方法体内，真是太晕了，就先到这吧，晚安，地球。

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