springboot如何使用PageHelper插件进行分页-蒲公英云

springboot如何使用PageHelper插件进行分页

1. 引入PageHelper插件pom依赖

<dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.12</version>
</dependency>

2.在service层添加分页代码即可

PageHelper.startPage(0,5);

@Override
    public RestResponse queryAll(ServiceData serviceData) { 
        PageHelper.startPage(0,5);
        List<ServiceData> serviceData1 = this.serviceDataMapper.queryAll(serviceData);
        PageInfo<ServiceData> serviceDataPageInfo = new PageInfo<>(serviceData1);
        return RestResponse.success(serviceDataPageInfo);
    }

这样查询出来的sql结果就自动分页了
3.如果需要总页数，当前页数......信息的，加上下面代码即可

PageInfo serviceDataPageInfo = new PageInfo<>(serviceData1);

返回信息数据结构大致为：

{ 
  "status": 200,
  "message": "SUCCESS",
  "result": { 
    "total": 0,
    "list": [],
    "pageNum": 0,
    "pageSize": 5,
    "size": 0,
    "startRow": 0,
    "endRow": 0,
    "pages": 0,
    "prePage": 0,
    "nextPage": 0,
    "isFirstPage": false,
    "isLastPage": true,
    "hasPreviousPage": false,
    "hasNextPage": false,
    "navigatePages": 8,
    "navigatepageNums": [],
    "navigateFirstPage": 0,
    "navigateLastPage": 0
  }
}