整合mybatis-plus必须避开的大坑

官网没有整合完整的例子，自己整合起来一通乱试，终于搞定，现在记录一下：

工程图：

1，去官网上找到导入maven的依赖

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

    
        1.8
        3.1.1
    

    
        
            org.springframework.boot
            spring-boot-starter-jdbc
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.0.1
        

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

        
            com.baomidou
            mybatis-plus-boot-starter
            ${baomidou.version}
        

        
            mysql
            mysql-connector-java
            runtime
        
        
            org.projectlombok
            lombok
            true
        

    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        


        
            
                src/main/resources
                true
            
            
                
                src/main/java
                
                    **/*.xml
                
            
        
    

2，User类

package com.example.demo.entity;

import com.baomidou.mybatisplus.annotation.*;
import lombok.Data;

import java.io.Serializable;
import java.util.Date;

/**
 * 

 * 管理员表
 * 
 */
@TableName("sys_user")
@Data
public class User implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * 主键id
     */
    @TableId(value = "USER_ID", type = IdType.ID_WORKER)
    private Long userId;
    /**
     * 头像
     */
    @TableField("AVATAR")
    private String avatar;
    /**
     * 账号
     */
    @TableField("ACCOUNT")
    private String account;
    /**
     * 密码
     */
    @TableField("PASSWORD")
    private String password;
    /**
     * md5密码盐
     */
    @TableField("SALT")
    private String salt;
    /**
     * 名字
     */
    @TableField("NAME")
    private String name;
    /**
     * 生日
     */
    @TableField("BIRTHDAY")
    private Date birthday;
    /**
     * 性别(字典)
     */
    @TableField("SEX")
    private String sex;
    /**
     * 电子邮件
     */
    @TableField("EMAIL")
    private String email;
    /**
     * 电话
     */
    @TableField("PHONE")
    private String phone;
    /**
     * 角色id(多个逗号隔开)
     */
    @TableField("ROLE_ID")
    private String roleId;
    /**
     * 部门id(多个逗号隔开)
     */
    @TableField("DEPT_ID")
    private Long deptId;
    /**
     * 状态(字典)
     */
    @TableField("STATUS")
    private String status;
    /**
     * 创建时间
     */
    @TableField(value = "CREATE_TIME", fill = FieldFill.INSERT)
    private Date createTime;
    /**
     * 创建人
     */
    @TableField(value = "CREATE_USER", fill = FieldFill.INSERT)
    private Long createUser;
    /**
     * 更新时间
     */
    @TableField(value = "UPDATE_TIME", fill = FieldFill.UPDATE)
    private Date updateTime;
    /**
     * 更新人
     */
    @TableField(value = "UPDATE_USER", fill = FieldFill.UPDATE)
    private Long updateUser;
    /**
     * 乐观锁
     */
    @TableField("VERSION")
    private Integer version;

}

3，UserMapper.xml

    
    
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
    
    
    
		 USER_ID AS userId, AVATAR AS avatar, ACCOUNT AS account, PASSWORD AS password,
        SALT AS salt, NAME AS name, BIRTHDAY AS birthday, SEX AS sex, EMAIL AS email, PHONE AS phone,
         ROLE_ID AS roleId, DEPT_ID AS deptId, STATUS AS status, CREATE_TIME AS createTime, CREATE_USER AS createUser,
          UPDATE_TIME AS updateTime, UPDATE_USER AS updateUser, VERSION AS version
	
    
    
        select
        
        from sys_user where ACCOUNT = #{account} and STATUS != 'DELETED'
    

4,UserMapper

package com.example.demo.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.example.demo.entity.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

@Mapper
public interface UserMapper extends BaseMapper {

    /**
     * 通过账号获取用户
     */
    User getByAccount(@Param("account") String account);

}

5,DemoApplication

package com.example.demo;

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

@SpringBootApplication
@MapperScan("com.example.demo.mapper")
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

6,application.properties

server.port=9999

#mysql
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/shirodemo?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=CONVERT_TO_NULL&useSSL=false&serverTimezone=CTT
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
#mybatis-plus
mybatis-plus.mapper-locations=classpath*:com/example/demo/mapper/**/*.xml
mybatis-plus.type-aliases-package=com.example.demo.entity

7,sql

CREATE TABLE `sys_user`  (
  `USER_ID` bigint(20) NOT NULL COMMENT '主键id',
  `AVATAR` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '头像',
  `ACCOUNT` varchar(45) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '账号',
  `PASSWORD` varchar(45) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '密码',
  `SALT` varchar(45) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 'md5密码盐',
  `NAME` varchar(45) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '名字',
  `BIRTHDAY` datetime(0) DEFAULT NULL COMMENT '生日',
  `SEX` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '性别(字典)',
  `EMAIL` varchar(45) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '电子邮件',
  `PHONE` varchar(45) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '电话',
  `ROLE_ID` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '角色id(多个逗号隔开)',
  `DEPT_ID` bigint(20) DEFAULT NULL COMMENT '部门id(多个逗号隔开)',
  `STATUS` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '状态(字典)',
  `CREATE_TIME` datetime(0) DEFAULT NULL COMMENT '创建时间',
  `CREATE_USER` bigint(20) DEFAULT NULL COMMENT '创建人',
  `UPDATE_TIME` datetime(0) DEFAULT NULL COMMENT '更新时间',
  `UPDATE_USER` bigint(20) DEFAULT NULL COMMENT '更新人',
  `VERSION` int(11) DEFAULT NULL COMMENT '乐观锁',
  PRIMARY KEY (`USER_ID`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '管理员表' ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of sys_user
-- ----------------------------
INSERT INTO `sys_user` VALUES (1, '1', 'admin', '1d6b1208c7d151d335790276a18e3d99', 'q6taw', 'liwl', '2019-01-16 00:00:00', 'M', '[email protected]', '18200000000', '1', 27, 'ENABLE', '2016-01-29 08:49:53', NULL, '2018-12-28 22:52:24', 24, 25);

8,最后调用test，执行搞定

package com.pt.invoice;

import com.pt.invoice.modular.system.entity.User;
import com.pt.invoice.modular.system.mapper.UserMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.List;

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {

    @Autowired
    private UserMapper userMapper;

    @Test
    public void testSelect() {
        System.out.println(("----- selectAll method test ------"));
        List userList = userMapper.selectList(null);
        userList.forEach(System.out::println);

        User user=userMapper.getByAccount("admin");
        System.out.println("用户admin======"+user);
    }

}

gitee地址：https://gitee.com/TimeToSayGoodbye/MyBatis-Plus-Test.git