mybatisplus id自动生成和逻辑删除和创建时间和更新时间自动填充

1、在实体类添加注解

@TableId(value = "id",type=IdType.ID_WORKER_STR)
private String id;

@TableLogic
@ApiModelProperty(value = "逻辑删除 1（true）,未删除0 （false ）")
private Boolean isDeleted;

@ApiModelProperty(value = "创建时间")
@TableField(fill = FieldFill.INSERT)
private Date gmtCreate;

@TableField(fill = FieldFill.INSERT_UPDATE)
@ApiModelProperty(value = "更新时间")
private Date gmtModified;

 

2、配置——逻辑删除/分页

@Configuration
@MapperScan("com.atguigu.eduservice.mapper")  //mapper是操作数据的包
public class MyConfig {
    //逻辑删除
    @Bean
    public ISqlInjector sqlInjector() {
        return new LogicSqlInjector();
    }
    //分页
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
        // paginationInterceptor.setOverflow(false);
        // 设置最大单页限制数量，默认 500 条，-1 不受限制
        // paginationInterceptor.setLimit(500);
        // 开启 count 的 join 优化,只针对部分 left join
//        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return paginationInterceptor;
    }
}

3、时间自动填充

 

@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
    
    @Override
    public void insertFill(MetaObject metaObject) {
        this.setFieldValByName("gmtCreate",new Date(),metaObject);
        this.setFieldValByName("gmtModified",new Date(),metaObject);
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        this.setFieldValByName("gmtModified",new Date(),metaObject);

    }
}