Spring Boot 整合 TKMybatis 二次简化持久层代码的实现

<!-- druid-spring-boot-starter -->
<dependency>
 <groupId>com.alibaba</groupId>
 <artifactId>druid-spring-boot-starter</artifactId>
 <version>1.1.10</version>
</dependency>

<!-- 数据库连接依赖 -->
<dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.40</version>
 <scope>runtime</scope>
</dependency>

<!-- mapper-spring-boot-starter -->
<dependency>
 <groupId>tk.mybatis</groupId>
 <artifactId>mapper-spring-boot-starter</artifactId>
 <version>2.0.2</version>
</dependency>

spring:
 datasource:
 druid:
  url: jdbc:mysql://127.0.0.1:3306/test?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf-8&useSSL=false
  username: root
  password: 123456
  initial-size: 1
  min-idle: 1
  max-active: 20
  test-on-borrow: true
  driver-class-name: com.mysql.jdbc.Driver # MySQL 8.x: com.mysql.cj.jdbc.Driver
  
mybatis:
 type-aliases-package: # 实体类的存放路径，如：com.antoniopeng.hello.spring.boot.entity
 mapper-locations: classpath:mapper/*.xml # mapper.xml 文件存放路径，这里存放在配置文件目录 resources 下
 
logging:
 level:
 com.antoniopeng.hello.springboot.mybatis: debug # 配置监听日志

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

@MapperScan(value = "com.antoniopeng.springboot.mybatis.mapper")
@SpringBootApplication
public class HelloSpringBootMybatisApplication {

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

}

<!-- pagehelper-spring-boot-starter -->
<dependency>
 <groupId>com.github.pagehelper</groupId>
 <artifactId>pagehelper-spring-boot-starter</artifactId>
 <version>1.2.5</version>
</dependency>

@RunWith(SpringRunner.class)
@SpringBootTest(classes = Application.class)
@Transactional
@Rollback
public class MyBatisTests {

 @Autowired
 UserService userService;

 /**
 * 测试分页插件
 */
 @Test
 public void testPageHelper() {
 
	Example example = new Example(User.class);
	 // 查询条件
  example.createCriteria().andEqualTo("userId", "1")
  // 分页参数
  PageHelper.startPage(1, 10, "create_time desc");
  // 获取分页列表数据
  List<User> userList = userService.selectByExample(example);
  PageInfo pageInfo = new PageInfo(userList);
  // 获取列表总数
  int userCount = (int) pageInfo.getTotal();
 }
}