Spring Boot（十二）集成 Mybatis-Plus 核心功能

MybatisPlusConfig.java

@EnableTransactionManagement
@Configuration
@MapperScan("com.hwx.api.mapper")
public class MybatisPlusConfig {

    /*
    * 分页器 使用分页接口必须有这个
    * */
    @Bean
    public PaginationInterceptor paginationInterceptor(){

        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();

        // 攻击 SQL 阻断解析器、加入解析链
        List sqlParserList = new ArrayList<>();
        sqlParserList.add(new BlockAttackSqlParser());
        paginationInterceptor.setSqlParserList(sqlParserList);

        return paginationInterceptor;
    }

    /*
    * 逻辑删除必须有这个
    * 并且实体类字段上加上@TableLogic注解
    *  @TableLogic
    *  private Integer deleted;
    * */
    @Bean
    public ISqlInjector sqlInjector() {
        return new LogicSqlInjector();
    }
}

• 数据分页

PaginationInterceptor 分页拦截器 一定要加，不然分页无效
Page page =new Page<>(pageIndex,pageSize);
iStoreUserChildrenService.page(page,queryWrapper)
就可以返回分页数据

	@GetMapping("findByAttributes")
	@ApiOperation(value = "按属性分页获取小孩列表")
	@ApiImplicitParams({@ApiImplicitParam(paramType = "query", dataType = "String", name = "unionId", value = "unionId"),
						@ApiImplicitParam(paramType = "query", dataType = "String", name = "name", value = "姓名"),
						@ApiImplicitParam(paramType = "query", dataType = "Long", name = "age", value = "年龄"),
						@ApiImplicitParam(paramType = "query", dataType = "String", name = "order", value = "排序方式(asc、desc)"),
						@ApiImplicitParam(paramType = "query", dataType = "String", name = "orderProp", value = "排序字段"),
						@ApiImplicitParam(paramType = "query", dataType = "String", name = "pageIndex", value = "当前页码"),
						@ApiImplicitParam(paramType = "query", dataType = "String", name = "pageSize", value = "页码大小")})
	public ReturnValue> findByAttributes(String unionId,
																  Integer age,
																  String name,
																  @RequestParam(defaultValue = "desc")String order,
																  @RequestParam(defaultValue = "unionId")String orderProp,
																  @RequestParam(defaultValue = "1")Long pageIndex,
																  @RequestParam(defaultValue = "10") Long pageSize){
		QueryWrapper queryWrapper=new QueryWrapper<>();
		if(unionId != null) {
			queryWrapper.eq("unionId", unionId);
		}
		if(age != null){
			queryWrapper.eq("age",age);
		}
		if(name != null){
			queryWrapper.like("name",name);
		}
		if(order != "desc"){
			queryWrapper.orderByAsc(orderProp);
		}else{
			queryWrapper.orderByDesc(orderProp);
		}
		Page page =new Page<>(pageIndex,pageSize);

		return new ReturnValue>(iStoreUserChildrenService.page(page,queryWrapper));
	}

• 逻辑删除
  逻辑删除仅仅只是在数据库上做标识状态，实际并没有物理删除数据库数据，执行的是update语句。
  mp 查询和删除时会自动加上 deleted=0
  注意的是 逻辑删除标识字段 实体类上加上注解@TableLogic

application.yml

mybatis-plus:
 global-config:
   db-config:
     logic-delete-value: 1 # 逻辑已删除值(默认为 1)
     logic-not-delete-value: 0 # 逻辑未删除值(默认为 0)

@Data
@EqualsAndHashCode(callSuper = true)
@Accessors(chain = true)
@ApiModel(value="KnowledgeArticle对象", description="knowledge_article information")
public class KnowledgeArticle extends BaseEntity {

   private static final long serialVersionUID = 1L;

   @TableId(value = "articleId", type = IdType.AUTO)
   private Long articleId;

   private String guid;

   @TableField("storeId")
   private Long storeId;

   @TableField("typeId")
   private Long typeId;

   private String title;

   private String author;

   private String summary;

   private String content;

   @TableField("publushTime")
   private LocalDateTime publushTime;

   @TableField("createTime")
   private LocalDateTime createTime;

   @TableField("showAll")
   private String showAll;

   @TableField("showStore")
   private String showStore;

   private String reserver1;

   private String reserver2;

   private String reserver3;

   @TableLogic
   private Integer deleted;

   @TableField(exist = false)
   private String typeName;
}

   @DeleteMapping("delete")
   @ApiOperation(value = "根据id删除文章类型")
   @ApiImplicitParams({@ApiImplicitParam( dataType = "String", name = "id", value = "id", required = true)})
   public ReturnValue removeById(@RequestParam String id){
       iKnowledgeArticleService.removeById(id);
       return new ReturnValue(ErrorCode.ERROR_SUCCESS_DELETE);
   }