编写一个Servlet，注册登录成功后，讲表单中的内容输出到页面当中
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="ser" method="post">
用户名<input type="text" name="username">
<br><br>
密码 <input type="password" name="password">
<br><br>
<input type="submit" value="登录">
</form>
</body>
</html>
package com.servlet.web; import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.websocket.Session; public class Servlet1 extends HttpServlet {
private static final long serialVersionUID = 1L; public Servlet1() {
super(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
String un=new String(request.getParameter("username").getBytes("ISO-8859-1"),"utf-8");
String pw=new String(request.getParameter("password").getBytes("ISO-8859-1"),"UTF-8"); if(un!=null&&pw!=null)
{
if(!un.equals(""))
{
if(un.equals("妍希")&&pw.equals("14567"))
{
response.getWriter().write(un+" 欢 迎 你 来 做 淄 博 游 玩!"+"<br>");
}
else
{
response.getWriter().write("输入的账号和密码有误");
}
}
else
{
response.getWriter().write("账号不能为空");
}
}
else
{
response.getWriter().write("请正确访问");
}
response.getWriter().append("Served at: ").append(request.getContextPath());
} protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response);
} }
