SpringMVC学习三-白红宇

SpringMVC学习三

阅读量：6878 次

发布时间：2019-06-26

本文共 5903 字，大约阅读时间需要 19 分钟。

基于SpringMVC实现简单用户管理

web.xml


     
       
                
         
                   
       
        HiddenHttpMethodFilter
                      
       
        org.springframework.web.filter.HiddenHttpMethodFilter
             
         
                     
       
        HiddenHttpMethodFilter
                      
                      
       
        /*
          
         
                  
                    
       
        springDispatcherServlet
                     
       
        org.springframework.web.servlet.DispatcherServlet
                     
                          
                             
        
         contextConfigLocation
                              
        
         classpath:springmvc.xml
                      
                      
                             
        
         encoding
                              
        
         UTF-8
                      
                     
                                   
                 
       
        1
                 
                          
                
                     
       
        springDispatcherServlet
                     
                     
       
        /
                 
        
          
       
        index.jsp

springmvc.xml

User.java

package com.springmvc.entity;public class User {                    private String username;                private String password;                private String email;                private int age;                                                public User(String username,String password,String email,int age) {                    this.username=username;                    this.password=password;                    this.email=email;                    this.age=age;                }                                public String getUsername() {                    return username;                }                public void setUsername(String username) {                    this.username = username;                }                public String getPassword() {                    return password;                }                public void setPassword(String password) {                    this.password = password;                }                public String getEmail() {                    return email;                }                public void setEmail(String email) {                    this.email = email;                }                public int getAge() {                    return age;                }                public void setAge(int age) {                    this.age = age;                }                                                @Override                public String toString() {                    return "User [username=" + username + ", password="                            + password + ", email=" + email + ", age=" + age                            +  "]";                }                                                                }

UserController.java

package com.springmvc.controller;import java.util.HashMap;import java.util.Map;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 com.springmvc.entity.User;@Controller@RequestMapping("/user")public class UserController {    private Map
     
       users = new HashMap
      
       ();        //创建构造函数    public UserController(){        //给users里添加属性        users.put("sddy", new User("sddy","123","123@123",15));        users.put("sdy", new User("sdy","1234","123@12",15));        users.put("ddy", new User("ddy","23","123@123",15));        users.put("sdd", new User("sddy","12","123@123",15));    }    @RequestMapping(value="/users",method=RequestMethod.GET)    public String List(Model model){         model.addAttribute("users",users);//传值给jsp页面,第一个users为jsp中items的users        return "user/list";            }    //链接到add页面是get请求，访问此代码    @RequestMapping(value="/add",method=RequestMethod.GET)    public String add(Model model){         model.addAttribute(new User());        //服务器端跳转forword        return "user/add";            }    //重载,在添加用户时，是post请求，访问此代码    @RequestMapping(value="/add",method=RequestMethod.POST)    public String add(User user){         users.put(user.getUsername(), user);        //客户端跳转        return "redirect:/user/users";            }}

list.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>              用户列表        
         
         
             
         
         
             添加       
     
             ${um.value.username}       ---${um.value.password}       ---${um.value.email}       ---${um.value.age}

add.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@taglib prefix="sf" uri="http://www.springframework.org/tags/form" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>              My JSP 'add.jsp' starting page        
         
         
             
         
         
             
        
     
                 Username：
      
      
           Password:
      
      
           Email:
      
      
           Age: