Springboot整合MybatisPlus及分页功能

1 引入pom

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot</artifactId>
    <version>2.7.14</version>
</dependency>
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.5.3.2</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.29</version>
</dependency>

2 编写配置类`MybatisPlusConfig`

@Configuration
public class MybatisPlusConfig {
    /**
     * 分页插件
     */
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
}

3 业务实现

3.1 Controller层

    @Autowired
    IComponentService componentService;

    @ApiOperation(value = "查询基础组件列表", notes = "根据条件查询基础组件列表")
    @GetMapping("/list")
    public ResponseMessage<IPage<Component>> queryList(@RequestBody QueryEntity<ComponentDTO> queryEntity){
        IPage<Component> page = new Page<>(queryEntity.getPageNum(), queryEntity.getPageSize());
        LambdaQueryWrapper<Component> query = new LambdaQueryWrapper<>();
//        query.eq(Component::getType, queryEntity.getQuery().getType());
        return ResponseMessage.success("查询成功",componentService.queryList(page,query));
    }

3.2 service层

IPage<Component> queryList(IPage<Component> page, LambdaQueryWrapper<Component> queryWrapper);

3.3 service实现层

	@Override
    public IPage<Component> queryList(IPage<Component> page, LambdaQueryWrapper<Component> queryWrapper) {

        return componentMapper.selectPage(page,queryWrapper);
    }

3.4 dao层

@Mapper
public interface ComponentMapper extends BaseMapper<Component> {

}

4 yaml配置

server:
  #运行端口号
  port: 8090
  servlet:
    context-path: /hom

spring:
#  mvc:
#    pathmatch:
#      matching-strategy: ANT_PATH_MATCHER
  #数据源配置
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/hom?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=Asia/Shanghai
    username: root
    password: marlon

#mybatis-plus配置
mybatis-plus:
  configuration:
    #sql日志打印
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
    #开启驼峰命名匹配
    map-underscore-to-camel-case: true
    #mapper文件
  mapper-locations: classpath:mapper/**/*.xml,classpath:mapper/*.xml
  #数据库实体类的包全路径，方便在mapper.xml中不许使用实体类的全路径，写类名就行（不区分大小写）
  type-aliases-package: cn.com.marlon.hom.entity
  global-config:
    db-config:
      #逻辑删除
      logic-delete-value: 0
      logic-not-delete-value: 1
      logic-delete-field: deleted