1.项目结构
2.视图页面
①user_add1.jsp
<%@ 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> <h1>添加用户信息！！</h1> <form action="add1.do" method="post"> 账号：<input type="text" name="userNum"/><br> 密码：<input type="text" name="passWord"/><br> <input type="submit" value="提交"> </form> </body> </html>
②user_add2.jsp
<%@ 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> <h1>添加用户信息！！</h1> <form action="add2.do" method="post"> 账号：<input type="text" name="usernum"/><br> 密码：<input type="text" name="password"/><br> <input type="submit" value="提交"> </form> </body> </html>
③user_add3.jsp
<%@ 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> <h1>添加用户信息3！！</h1> <form action="add3.do" method="post"> 账号：<input type="text" name="usernum"/><br> 密码：<input type="text" name="password"/><br> <input type="submit" value="提交"> </form> </body> </html>
④user_add4.jsp
<%@ 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> <h1>添加用户信息3！！</h1> <form action="add4.do" method="post"> 账号：<input type="text" name="usernum"/><br> 密码：<input type="text" name="password"/><br> <input type="submit" value="提交"> </form> </body> </html>
3.UserController.java
package com.spring; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.servlet.ModelAndView; @Controller /*@RequestMapping("/user")*/ public class UserController { @RequestMapping(value="/add1.do",method=RequestMethod.POST) public String add1(HttpServletRequest request, HttpServletResponse response,HttpSession session){ String userNum=request.getParameter("userNum"); String passWord=request.getParameter("passWord"); System.out.println("userNumber:"+userNum+" password:"+passWord); String user="userNumber:"+userNum+" password:"+passWord; request.setAttribute("user", user); return "user/success"; } @RequestMapping(value="/add2.do",method=RequestMethod.POST) public ModelAndView add2(String usernum,String password){ ModelAndView mav=new ModelAndView("user/success"); mav.addObject("userNum",usernum); mav.addObject("passWord", password); return mav; } /*用的最多*/ @RequestMapping(value="/add3.do",method=RequestMethod.POST) public String add3(Model model,@RequestParam(value="usernum")String usernum,Integer password){ model.addAttribute("userNum",usernum); model.addAttribute("passWord", password); return "user/success"; } @RequestMapping(value="/add4.do",method=RequestMethod.POST) public String add4(Map map,@RequestParam(value="usernum")String usernum,Integer password){ map.put("userNum",usernum); map.put("passWord", password); return "user/success"; } }
注：1.返回数据主要有四种方法，①通常用的request方法 ②ModelAndView ③Model ④Map
2.本质还是request方法