springboot分頁

原文地址：http://www.cnblogs.com/1315925303zxz/p/7364552.html

1 pom文件

<dependency>
     <groupId>com.github.pagehelper</groupId>
     <artifactId>pagehelper</artifactId>
      <version>4.1.6</version>
 </dependency>

2這次直接是在項目的入口類application.java中直接設置PageHelper插件即可

//配置mybatis的分頁插件pageHelper
    @Bean
    public PageHelper pageHelper(){
        PageHelper pageHelper = new PageHelper();
        Properties properties = new Properties();
        properties.setProperty("offsetAsPageNum","true");
        properties.setProperty("rowBoundsWithCount","true");
        properties.setProperty("reasonable","true");
        properties.setProperty("dialect","mysql");    //配置mysql數據庫的方言
        pageHelper.setProperties(properties);
        return pageHelper;
    }

3同理，使用插件實現分頁功能，方式還是一樣，只需將當前查詢的頁數和每頁顯示的條數穿進去即可，直接源碼這是需要用到的分頁實體，各位可以直接享用。

package com.zxz.utils;

/**
 * 分頁bean
 */

import java.util.List;

public class PageBean<T> {
    // 當前頁
    private Integer currentPage = 1;
    // 每頁顯示的總條數
    private Integer pageSize = 10;
    // 總條數
    private Integer totalNum;
    // 是否有下一頁
    private Integer isMore;
    // 總頁數
    private Integer totalPage;
    // 開始索引
    private Integer startIndex;
    // 分頁結果
    private List<T> items;

    public PageBean() {
        super();
    }

    public PageBean(Integer currentPage, Integer pageSize, Integer totalNum) {
        super();
        this.currentPage = currentPage;
        this.pageSize = pageSize;
        this.totalNum = totalNum;
        this.totalPage = (this.totalNum+this.pageSize-1)/this.pageSize;
        this.startIndex = (this.currentPage-1)*this.pageSize;
        this.isMore = this.currentPage >= this.totalPage?0:1;
    }

    public Integer getCurrentPage() {
        return currentPage;
    }

    public void setCurrentPage(Integer currentPage) {
        this.currentPage = currentPage;
    }

    public Integer getPageSize() {
        return pageSize;
    }

    public void setPageSize(Integer pageSize) {
        this.pageSize = pageSize;
    }

    public Integer getTotalNum() {
        return totalNum;
    }

    public void setTotalNum(Integer totalNum) {
        this.totalNum = totalNum;
    }

    public Integer getIsMore() {
        return isMore;
    }

    public void setIsMore(Integer isMore) {
        this.isMore = isMore;
    }

    public Integer getTotalPage() {
        return totalPage;
    }

    public void setTotalPage(Integer totalPage) {
        this.totalPage = totalPage;
    }

    public Integer getStartIndex() {
        return startIndex;
    }

    public void setStartIndex(Integer startIndex) {
        this.startIndex = startIndex;
    }

    public List<T> getItems() {
        return items;
    }

    public void setItems(List<T> items) {
        this.items = items;
    }
}

@Override
    public List<Item> findItemByPage(int currentPage,int pageSize) {
        //設置分頁信息，分別是當前頁數和每頁顯示的總記錄數【記住：必須在mapper接口中的方法執行之前設置該分頁信息】
        PageHelper.startPage(currentPage, pageSize);
        
        List<Item> allItems = itemMapper.findAll();        //全部商品
        int countNums = itemMapper.countItem();            //總記錄數
        PageBean<Item> pageData = new PageBean<>(currentPage, pageSize, countNums);
        pageData.setItems(allItems);
        return pageData.getItems();
    }