IDEA+MAVEN基于ssm框架的用户登录以及增删查改

   上篇博客中实现了数据库的增删查改，今天用另一种包结构实现增删查改以及用户登录功能。

1.开发工具

IntelliJ IDEA 2018
JDK1.8
tomcat 7.0.79
Mysql 5.0
Maven 3.6.0

2.工程结构

备注：在总项目下新建四个module
在新建ssm_bean\ssm_dao\ssm_service时，不勾选create from archetepe和下面的webapp;
在新建ssm_web时，勾选和上篇博客中相似的create from archetepe和下面的webapp（建立目录和包结构如果还有问题请参见上篇博客）

3.配置文件

（1）总工程项目文件下的pom.xml(不是每个module下的pom.xml)

    4.0.0

    com.zhongruan
    ssm_parent
    pom
    1.0-SNAPSHOT
    
        ssm_bean
        ssm_dao
        ssm_service
        ssm_web
    
    
        UTF-8
        1.7
        1.7
        
        5.0.2.RELEASE
        
        3.2.6
        
        1.7.7
        1.2.17
        0.9.5.2
        1.1.2
    

    
        
        
            org.springframework
            spring-core
            ${spring.version}
        

        
            org.springframework
            spring-web
            ${spring.version}
        
        
            org.springframework
            spring-oxm
            ${spring.version}
        
        
            org.springframework
            spring-tx
            ${spring.version}
        

        
            org.springframework
            spring-jdbc
            ${spring.version}
        

        
            org.springframework
            spring-webmvc
            ${spring.version}
        
        
            org.springframework
            spring-aop
            ${spring.version}
        

        
            org.springframework
            spring-context-support
            ${spring.version}
        

        
            org.springframework
            spring-test
            ${spring.version}
        
        
        
            org.mybatis
            mybatis
            ${mybatis.version}
        
        
        
            org.mybatis
            mybatis-spring
            1.2.2
        
        
        
            javax
            javaee-api
            7.0
        

        
        
            mysql
            mysql-connector-java
            5.1.30
        
        
        
            commons-dbcp
            commons-dbcp
            1.2.2
        
        
        
            jstl
            jstl
            1.2
        
        
        
        
            log4j
            log4j
            ${log4j.version}
        


        
        
            com.mchange
            c3p0
            ${c3p0.version}
        

        
            taglibs
            standard
            ${taglibs.version}
        

        
            org.slf4j
            slf4j-api
            ${slf4j.version}
        
        
            org.slf4j
            slf4j-log4j12
            ${slf4j.version}
        

        
        
            javax.servlet
            javax.servlet-api
            3.1.0
            provided
        
        
        
            javax.servlet.jsp
            javax.servlet.jsp-api
            2.3.1
            provided
        

    

（2）ssm_web下的resources下的applicationContext.xml

（3）在ssm_web->resources下db.properties文件中配置mysql数据库（包括数据库名和密码）

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/zyt?useSSL=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456

(4)ssm_web->resources下的spring-mvc.xml

(5)ssm_web->webapp->WEB-INF下的web.xml

  
  
    contextConfigLocation
    classpath*:applicationContext.xml
  

  
  
    org.springframework.web.context.ContextLoaderListener
  
  
    org.springframework.web.context.request.RequestContextListener
  

  
  
    characterEncodingFilter
    org.springframework.web.filter.CharacterEncodingFilter
    
      encoding
      UTF-8
    
  
  
    characterEncodingFilter
    /*
  

  
  
    dispatcherServlet
    org.springframework.web.servlet.DispatcherServlet
    
    
      contextConfigLocation
      classpath:spring-mvc.xml
    
    
    1
  
  
    dispatcherServlet
    *.do
  

3.各包下代码（基本同上篇博客）
（1）在ssm_dao->resources->mapper包下新建 userMapper.xml

    select * from userinfo where username=#{username} and password=#{password}



    select * from userinfo




    insert into userinfo(id,username,password) values (#{id},#{username},#{password})



   delete from userinfo where id=#{id}



   update  userinfo
   set username = #{username},password = #{password}
   where  id = #{id}



        select * from userinfo where id=#{id}

（2）实体类（bean包下UserInfo.java）

package com.zhongruan.bean;

public class UserInfo {
    private int id;
    private String password;
    private String username;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    @Override
    public String toString() {
        return "com.zhongruan.bean.UserInfo{" +
                "id=" + id +
                ", password='" + password + '\'' +
                ", username='" + username + '\'' +
                '}';
    }

(3)dao包下接口IUserDao.java

package com.zhongruan.dao;

import com.zhongruan.bean.UserInfo;

import java.util.List;

public interface IUserDao {
    public UserInfo doLogin(UserInfo userInfo);
    public List findall();
    public int adduser(UserInfo userinfo);
    public int deleteuserbyid(int id);
    public int updateuser(UserInfo userinfo);
    public UserInfo getuser(int id);
}

(4)service中的接口IUserService.java

package com.zhongruan.service;

import com.zhongruan.bean.UserInfo;

import java.util.List;

public interface IUserService {
    public Boolean  doLogin(UserInfo userInfo);
    List findall();
    int adduser(UserInfo userinfo);
    int deleteuserbyid(int id);
    int updateuser(UserInfo userinfo);
    UserInfo getuser(int id);

(5)service包下的实现包impl下的UserService.java

package com.zhongruan.service.impl;

import com.zhongruan.bean.UserInfo;
import com.zhongruan.dao.IUserDao;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserService implements IUserService {

    @Autowired
    private IUserDao userDao;

    @Override
    public Boolean doLogin(UserInfo userInfo) {
        UserInfo userInfo1=userDao.doLogin(userInfo);
        if(null!=userInfo1){
            return true;
        }else {
            return false;
        }
    }
    @Override
    public List findall() {
        return userDao.findall();
    }

    @Override
    public int adduser(UserInfo userinfo) {
        return userDao.adduser(userinfo);
    }

    @Override
    public int deleteuserbyid(int id) { return userDao.deleteuserbyid(id); }
   
    @Override
    public int updateuser(UserInfo userinfo){return  userDao.updateuser(userinfo);}

    @Override
    public UserInfo getuser(int id) {
        return userDao.getuser(id);
    }
}

(6)ssm_web下的controller包下的UserController.java

package com.zhongruan.controller;

import com.zhongruan.bean.UserInfo;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private IUserService userService;

    @RequestMapping("/login.do")
    public ModelAndView login(UserInfo userInfo){
        ModelAndView mv=new ModelAndView();
        Boolean flag=userService.doLogin(userInfo);
        if(flag){
            mv.setViewName("main");
        }else{
            mv.setViewName("../failer");
        }
        return mv;
    }

    @RequestMapping("/findAll.do")
    public ModelAndView findall() {
        List all = userService.findall();
        ModelAndView mv=new ModelAndView();
        mv.addObject("userInfos", all);
        mv.setViewName("/user-list");//跳转到allUser
        return mv;
    }

    @RequestMapping("/delete.do")
    public  String deleteuser(int id){
        userService.deleteuserbyid(id);
        return "redirect:findAll.do";//重定向
}

    @RequestMapping("/save.do")
    public String adduser(UserInfo userinfo){
        userService.adduser(userinfo);
        return "redirect:findAll.do";//重定向
    }

    @RequestMapping("/toUpdate.do")
    public ModelAndView toUpdateUser(int id){
        UserInfo userInfo=userService.getuser(id);
        ModelAndView mv=new ModelAndView();
        mv.setViewName("/user-update");
        mv.addObject("userInfo",userInfo);
        return mv;
    }

    @RequestMapping("/update.do")
    public  String updateuser(UserInfo userinfo){
        userService.updateuser(userinfo);
        return "redirect:findAll.do";//重定向
    }
}

4.页面设计

链接：https://pan.baidu.com/s/1qByGvlIqtIdYmY1gXuDImw
提取码：z6fo
复制这段内容后打开百度网盘手机App，操作更方便哦

以上是页面各文件代码，将css、plugins、img、pages这四个文件复制粘贴到ssm_web—>webapp下；将login.jsp\failer.jsp\index.jsp这三个文件复制粘贴到web-inf下。

这三个jsp文件下加入相应的跳转链接。

5.运行效果图