分页插件的实现 (篇一)

持久层:

List<Task> queryListBynewest(TaskQueryObject qo);

service层:

PageInfo queryListBynewest(TaskQueryObject qo);

serviceImpl层:

@Override
	public PageInfo queryListBynewest(TaskQueryObject qo) {
    
    
		//对任务进行分页
		PageHelper.startPage(qo.getCurrentPage(),qo.getPageSize());
		//查询数据
		List<Task> tasks = taskMapper.queryListBynewest(qo);
		return new PageInfo<>(tasks);
	}

分页依赖:

   <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>RELEASE</version>
        </dependency>

TaskQueryObject 接参实体类

package com.numberone.system.qo;

import lombok.Getter;
import lombok.Setter;

import java.math.BigDecimal;

@Getter
@Setter
public class TaskQueryObject {
    
    
    private int currentPage = 1;  这是传参第几页的时候  
    private int pageSize = 8;  这是一页多少页数     这是写死的  根据页数需要去写死
    
    
    
   
}