spring boot mybatis 整合

本文假设您已经新建好了springboot工程

本列子用SQL SERVER2008　 IDEA２０１８

项目结构：

1、在pom.xml中加入如下配置：

    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.1.3.RELEASE
         
    
    com.example
    demo
    0.0.1-SNAPSHOT
    demo
    Demo project for Spring Boot

    
        1.8
    

    
        
            org.springframework.boot
            spring-boot-starter-jdbc
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.boot
            spring-boot-starter-thymeleaf
        


        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.0.0
        
        
            com.microsoft.sqlserver
            sqljdbc4
            4.2
            4.2
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        


        
            org.springframework.boot
            spring-boot-starter
            
                
                    org.springframework.boot
                    spring-boot-starter-logging
                
            
        

        
        
            org.springframework.boot
            spring-boot-starter-log4j2
        

    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
        
            
                src/main/java
                
                    **/*.properties
                    **/*.xml
                
                false
            
        
    

 

２　application.properties配至

#thymeleaf start
pring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html


#数据库连接 SQL SERVER
spring.datasource.url=jdbc:sqlserver://localhost:1433;DatabaseName=Text
spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.username=sa
spring.datasource.password=123
spring.datasource.type= org.springframework.jdbc.datasource.DriverManagerDataSource

#mapper-locations: com.example.demoMyBatis:Mapper/*.xml
mybatis.type-aliases-package=com.example.demo.entity　＃实体类的放路径

3 新建实体模型user

package com.example.demo.entity;

public class User {

    public int ID;

    public int getID() {
        return ID;
    }

    public void setID(int ID) {
        this.ID = ID;
    }



    public String UserName;
    public String Pwd;
    public String Age;

    public String getUserName() {
        return UserName;
    }

    public void setUserName(String userName) {
        UserName = userName;
    }

    public String getPwd() {
        return Pwd;
    }

    public void setPwd(String pwd) {
        Pwd = pwd;
    }



    public String getAge() {
        return Age;
    }

    public void setAge(String age) {
        Age = age;
    }
}

4在您的代码中新建mapper接口和mapper.xml映射配置

 4.1mapper接口

package com.example.demo.Mapper;


import com.example.demo.entity.User;

import java.util.List;

public interface UserMapper {

    public void AddUser(User user);

    public List UserAll();

    public User UserFind(int ID);

    public void UpdateUser(User user);

    public void DeleteUser(int ID);
}

4.2mapper.xml映射配置

 
    
    
        insert into Userinfo(UserName, Pwd, Age) values (#{UserName}, #{Pwd}, #{Age})
    
    
    
        select ID,UserName,Pwd,Age from Userinfo
    
      
    
        select ID,UserName,Pwd,Age from Userinfo where ID=#{ID}
    
    
    
      update Userinfo set UserName=#{UserName}, Pwd=#{Pwd}, Age=#{Age} where ID=#{ID}
   
    
    
     delete from Userinfo  where ID=#{ID}
    
   

注意：mapper接口和mapper.xml映射配置 可以用 UserDAO  这种写法

package com.example.demo.RestfulDAO;

import com.example.demo.entity.User;
import org.apache.ibatis.annotations.*;

@Mapper
public interface UserDAO {
    /**
     * 用户数据新增
     */

    @Insert("insert into Userinfo(UserName, Pwd, Age) values (#{UserName},#{Pwd},#{Age})")
    void addUser(User user);

    /**
     * 用户数据修改
     */
    @Update("update Userinfo set UserName=#{UserName},Pwd=#{Pwd} where id=#{id}")
    void updateUser(User user);

    /**
     * 用户数据删除
     */
    @Delete("delete from Userinfo where ID=#{ID}")
    void deleteUser(int ID);


    /**
     * 根据用户ID查询用户信息
     *
     */
    @Select("SELECT UserName, Pwd, Age FROM Userinfo where ID=#{ID}")
    User findById(@Param("ID") int ID);


    /**
     * 根据用户age查询用户信息
     */
    @Select("SELECT UserName, Pwd, Age FROM Userinfo")
    User findAll();
}

5 新建 Service 

5.1 Service 接口

package com.example.demo.Service;

import com.example.demo.entity.User;

import java.util.List;

public interface UserService {


  public  void AddUser(User user);

  public List UserAll();

  public User UserFind(Integer ID);

  public void UpdateUser(User user);

  public void DeleteUser(int ID);
}

5.2  Service 接口实现

package com.example.demo.Service;

import com.example.demo.entity.User;
import com.example.demo.Mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;


@Service
@Transactional
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public void AddUser(User user) {

        this.userMapper.AddUser(user);
    }

    @Override
    public List UserAll()
    {
       return this.userMapper.UserAll();
    }

    @Override
    public User UserFind(Integer ID)
    {
        return this.userMapper.UserFind(ID);

    }

    @Override
    public void UpdateUser(User user) {
        this.userMapper.UpdateUser(user);
    }

    @Override
    public void DeleteUser(int ID) {
        this.userMapper.DeleteUser(ID);
    }
}

6 新建 Controller

package com.example.demo.Controller;


import com.example.demo.Service.UserService;
import com.example.demo.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.List;

@Controller
public class UserController {

    private static final Logger logger;

    static {
        logger = LogManager.getLogger(User.class);
    }


    @Autowired(required = true)
    private UserService userService;

    //添加用户
    @RequestMapping("/AddUser")
    //  @ResponseBody
    //@RequestMapping(value = "/AddUser", method = RequestMethod.POST)
    public String AddUser(User user) {
        this.userService.AddUser(user);
        return "OK";
    }

    //查询所有用户
    @RequestMapping("/UserAll")
    //@RequestMapping(value = "/UserAll", method = RequestMethod.GET)
    public  String UserAll(Model mode)
    {
        List list=this.userService.UserAll();
         mode.addAttribute("list",list);
         return "UserAll";
    }
    //根据ID查询用户信息
    @RequestMapping("/UpdateUserInfo")
    public String UserFind(Integer ID,Model model)
    {
        User user=this.userService.UserFind(ID);
        logger.error("user"+user.UserName);
        model.addAttribute("user",user);
        return "UpdateUser";
    }

    //更新用户信息
    @RequestMapping("/UpdateUser")
    //@RequestMapping(value = "/UserAll", method = RequestMethod.GET)
    public  String UpdateUser(User user)
    {
        this.userService.UpdateUser(user);
        return "OK";
    }

    //根据ID删除用户信息
    @RequestMapping("/DeleteUser")
    public String DeleteUser(Integer ID)
    {
       this.userService.DeleteUser(ID);
        return "redirect:/UserAll";

    }
    @RequestMapping("/{page}")
    public String ShowPage(@PathVariable String page) {
        return page;
    }



}

7 页面

7.1 查询 和删除用户页

    
    



   
用户
初始密码
性别
操作
    


        

        

        

        
 更新用户
                删除用户
        
    

7.2 添加用户页

    
    




    用户名

    用户密码

    用户性别

    

7.3更新用户

    
    



    
    用户名

    用户密码

    用户性别

    

7.4 成功页

    
    


添加成功