1 创建SpringBoot工程

这里不做具体记录,创建工程往常教程很多,

下面贴出重要文件和注意事项

1.1 pom.xml

<?xml version="1.0" encoding="UTF-8"?>

  4.0.0

  show.mrkay
  boot-mybatis-generator
  1.0-SNAPSHOT
  jar
  
    org.springframework.boot
    spring-boot-starter-parent
    2.2.6.RELEASE
  
  
    UTF-8
    UTF-8
    1.8
  
  
    
    
      org.springframework.boot
      spring-boot-starter
    
    
      org.springframework.boot
      spring-boot-starter-web
    
    
      org.springframework.boot
      spring-boot-starter-test
    
    
    
      mysql
      mysql-connector-java
    
    
      com.alibaba
      druid-spring-boot-starter
      1.1.9
    
    
    
      org.mybatis.spring.boot
      mybatis-spring-boot-starter
      2.1.0
    
    
    
    
      org.springframework.boot
      spring-boot-starter-aop
    
    
    
      org.slf4j
      jcl-over-slf4j
    
    
    
      org.slf4j
      slf4j-log4j12
    
  
  
    
    
      
      
        org.springframework.boot
        spring-boot-maven-plugin
      
      
        org.mybatis.generator
        mybatis-generator-maven-plugin
        1.4.0
        
        
          
          true
          
          true
          
          
        
        
          
            mysql
            mysql-connector-java
            5.1.47
          
        
      
    
  

1.2 application.yml

server:
 port: 8080
spring:
 datasource:
  driver-class-name: com.mysql.jdbc.Driver
  url: jdbc:mysql://localhost:3306/generaltor?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT
  username: root
  password: lk0313
  druid:
   db-type: com.alibaba.druid.pool.DruidDataSource
#  下面不配置就是采用默认配置
#  filters: stat
#  maxActive: 20
#  initialSize: 1
#  maxWait: 60000
#  minIdle: 1
#  timeBetweenEvictionRunsMillis: 60000
#  minEvictableIdleTimeMillis: 300000
#  validationQuery: select 'x'
#  testWhileIdle: true
#  testOnBorrow: false
#  testOnReturn: false
#  poolPreparedStatements: true
#  maxOpenPreparedStatements: 20
mybatis:
# 该配置项配置了MyBatis配置文件保存路径
 mapper-locations: classpath*:show/makey/dao/*.xml
# 配置扫描对应实体所在包,将mapper的实现类注入容器我们在启动器类上加了@MapperScan注解这里就不需要了
logging:
 file:
  path: /logs
# type-aliases-package: show.mrkay.dao

1.3 generatorConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>


  
    
      
      
      
      
    
    
    
    
    
      
      
    
    
    
      
      
      
      
    
    
    
      
    
    
    
    
      
    
    
    
      
      
    
  

步骤:

1 导入依赖

2 创建*generaltorConfig.xml配置文件

3 配置yml配置文件

注意:

pom中generalto-maven-plugs中必须指定mysql驱动,并且明确版本

generaltorConfig.xml中的

标签中需要指定tableName和生成的实体名字

2 创建数据库表

-- 建表语句:
/*
SQLyog Enterprise v12.09 (64 bit)
MySQL - 5.5.40 : Database - generaltor
*********************************************************************
*/


/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=''*/;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`generaltor` /*!40100 DEFAULT CHARACTER SET utf8 */;

/*Table structure for table `student` */

DROP TABLE IF EXISTS `student`;

CREATE TABLE `student` (
 `id` int(32) NOT NULL AUTO_INCREMENT,
 `name` varchar(15) DEFAULT NULL,
 `sex` varchar(2) DEFAULT NULL,
 `phone` int(15) DEFAULT NULL,
 PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

/*Data for the table `student` */

insert into `student`(`id`,`name`,`sex`,`phone`) values (1,'lk','男',12345578);

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

3 运行

如果使用IDEA 我们只需要找到右边侧栏中的maven(没有记得调出了)

找到plugins–>mybatis-generaltor–>mybatis-generaltor:generaltor 之后双击即可,此时刷新一下项目就自动生成我们想要的,mapper和xml以及pojo

4 测试

创建穿点controller和service 来完成一次测试,

package show.mrkay.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.Mapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.support.JstlUtils;
import show.mrkay.dao.StudentMapper;
import show.mrkay.pojo.Student;
import show.mrkay.service.UserService;

import java.util.List;

/**
 * @ClassName: UserController
 * @description: 用户Controller
 * @Author: MrKay
 * @Date: 2020/11/8
 */
@RestController
@RequestMapping("/user")
public class UserController {
  @Autowired
  private UserService userService;
  @GetMapping("/alllist")
  public List selectAll(){
    return userService.selectAll();
  }
}

package show.mrkay.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import show.mrkay.dao.StudentMapper;
import show.mrkay.pojo.Student;

import java.util.List;

/**
 * @ClassName: UserService
 * @description: UserService
 * @Author: MrKay
 * @Date: 2020/11/8
 */
@Service
public class UserService {
  @Autowired
  private StudentMapper studentMapper;
  public List selectAll(){
    List students = studentMapper.selectAll();
    return students;
  }
}

package show.mrkay;

import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.annotation.MapperScans;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("show.mrkay.dao")
public class GeneratorApplication {
  public static void main(String[] args) {
    SpringApplication.run(GeneratorApplication.class, args);
  }
}

注意:

启动器类中需要加入@MapperScan(“mapper接口所在包”)注解,这样我们就不需要手动创建实现类了,mybatis会自动帮我们创建

启动之后:

地址栏输入 localhost:8080/user/alllist

得到查询结果:

[{"id":1,"name":"lk","sex":"男","phone":12345578}]