IDEA+Maven 整合SSM框架实现用户管理系统查询全部、更新

IDEA+Maven 整合SSM框架实现用户管理系统查询全部、更新

1.建立数据库

2.maven 创建项目

点击File -> New -> Project -> Maven -> 勾选 Create from archetype -> 选择 maven-archetype-webapp

3.导包

对项目的pom.xml文件进行配置，在此文件中配置项目所需要的jar包。

  4.0.0

  com.zhongruan
  Day3
  1.0-SNAPSHOT
  war

  Day3 Maven Webapp
  
  http://www.example.com

  
    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
    

  

  
    Day3
    
      
        
          maven-clean-plugin
          3.1.0
        
        
        
          maven-resources-plugin
          3.0.2
        
        
          maven-compiler-plugin
          3.8.0
        
        
          maven-surefire-plugin
          2.22.1
        
        
          maven-war-plugin
          3.2.2
        
        
          maven-install-plugin
          2.5.2
        
        
          maven-deploy-plugin
          2.8.2
        
      
    
  

在resource包下新建Directory：“mapper”（用于存放xxxMapper.xml文件）和“spring”（用于存放spring-xxx.xml配置文件），导入配置文件：“jdbc.properties”（mysql数据库配置文件）,”log4j.properties”（日志输出配置文件）,”mybatis-config.xml”（mybatis框架配置文件）。

4. 创建目录结构

5. 编写 bean 和 dao

package com.zhongruan.bean;
//实体类，映射数据库
public class UserInfo {
    //1.对属性的封装
    private int id;
    private String username;
    private String password;
    //2.getter，setter
    public int getId() {
        return id;
    }

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

    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;
    }
    //3.构造方法


    public UserInfo(int id, String username, String password) {
        this.id = id;
        this.username = username;
        this.password = password;
    }

    public UserInfo() {
    }
    //4.toString

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

import com.zhongruan.bean.UserInfo;

import javax.xml.registry.infomodel.User;
import java.util.List;

public interface UserDao {
    //查询全部
    List findAllUser();
    //更新前的查询
    UserInfo findUserById(int id);
    //更新
    void updUserById(UserInfo userInfo);

}

6. 编写mapper

    
    
        select *from tb_user
    
    
    
        select *from  tb_user where id=#{id}
    
    
    
        update tb_user set username=#{username},password=#{password} where id=#{id}
    

7. 编写service层

import com.zhongruan.bean.UserInfo;

import javax.xml.registry.infomodel.User;
import java.util.List;

public interface UserInfoService {
    //查询全部
    List findAllUser();

    //更新前的查询
    UserInfo findUserById(int id);
    //更新
    void updUserById(UserInfo userInfo);
}

package com.zhongruan.service.impl;

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

import javax.xml.registry.infomodel.User;
import java.util.List;
@Service
public class UserInfoServiceImpl implements UserInfoService {

    @Autowired
    private UserDao userDao;

    @Override
    public List findAllUser() {
        return userDao.findAllUser();
    }

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

    @Override
    public void updUserById(UserInfo userInfo) {
        userDao.updUserById(userInfo);
    }
}

8. 编写controller

package com.zhongruan.controller;

import com.zhongruan.bean.UserInfo;
import com.zhongruan.service.UserInfoService;
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 javax.xml.registry.infomodel.User;
import java.util.List;

@Controller
@RequestMapping("/user")
public class UserInfoController {
    @Autowired
    private UserInfoService userInfoService;
    @RequestMapping("findAllUser.do")
    public ModelAndView findAllUser(){

        //1.调用service方法查询并得到结果
        List userInfoList=userInfoService.findAllUser();
        //2.实例化ModelView
        ModelAndView mv=new ModelAndView();
        mv.addObject("userInfoList",userInfoList);
        mv.setViewName("user-list");

        return mv;

    }
    //修改前的查询
    @RequestMapping("/findUserById.do")
    public ModelAndView findUserById(int id){
        UserInfo userInfo = userInfoService.findUserById(id);
        System.out.println("得到的Id"+id);
        ModelAndView mv=new ModelAndView();
        mv.addObject("userInfo",userInfo);
        mv.setViewName("user-update");
        return mv;
    }
    //更新
    @RequestMapping("/updUserById.do")
    public String updUserById(UserInfo userInfo){
        userInfoService.updUserById(userInfo);
        return "redirect:findAllUser.do";
    }
}

页面用老师给的素材

结果展示