session的用法
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1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 </head> 9 <script type="text/javascript" src="../js/jquery-1.7.2.js"></script> 10 <script type="text/javascript"> 11 $(function(){ 12 $(":button").click(function(){ 13 document.getElementsByTagName("form")[0].submit(); 14 }); 15 16 }) 17 </script> 18 <body> 19 <form action="../loginSrevlet" method="post"> 20 用户名：<input type="text" name="userName"/><br/> 21 密码：<input type="password" name="password"/><br/> 22 <button type="button">登录</button> 23 <button type="reset">重置</button> 24 </form> 25 </body> 26 </html>
1 package com.zdsofe.servlet1; 2 3 import java.io.IOException; 4 import java.util.ArrayList; 5 import java.util.Enumeration; 6 import java.util.List; 7 8 import javax.servlet.ServletException; 9 import javax.servlet.annotation.WebServlet; 10 import javax.servlet.http.HttpServlet; 11 import javax.servlet.http.HttpServletRequest; 12 import javax.servlet.http.HttpServletResponse; 13 import javax.servlet.http.HttpSession; 14 15 /** 16 * Servlet implementation class loginSrevlet 17 */ 18 @WebServlet("/loginSrevlet") 19 public class loginSrevlet extends HttpServlet { 20 private static final long serialVersionUID = 1L; 21 22 /** 23 * @see HttpServlet#HttpServlet() 24 */ 25 public loginSrevlet() { 26 super(); 27 // TODO Auto-generated constructor stub 28 } 29 30 /** 31 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) 32 */ 33 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 34 // TODO Auto-generated method stub 35 } 36 37 /** 38 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) 39 */ 40 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 41 //编码格式 42 request.setCharacterEncoding("utf-8"); 43 response.setCharacterEncoding("utf-8"); 44 response.setContentType("text/heml charset=utf-8"); 45 46 //得到表单的数据 47 Enumeration<String > name=request.getParameterNames(); 48 List<String> list=new ArrayList<String>(); 49 while(name.hasMoreElements()) 50 { 51 list.add(request.getParameter(name.nextElement())); 52 } 53 54 //创建Session对象 55 HttpSession ss= request.getSession(); 56 ss.setAttribute("uName", list.get(0)); 57 response.sendRedirect("/webProject1/jsp/loginWelcome.jsp"); 58 59 } 60 61 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <!-- 实现3秒后跳转功能--> 8 <!-- <meta content="3;url=loginBottom.jsp" http-equiv="refresh"> --> 9 <title>Insert title here</title> 10 </head> 11 <body> 12 <%=session.getAttribute("uName") %> 13 <button onclick="location.href=‘loginBottom.jsp‘">跳转</button> 14 三秒后跳转.... 15 </body> 16 </html>
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 </head> 9 <body> 10 Welcome! 11 </body> 12 </html>
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