SpringBoot+MyBatis+Maven项目中集成PageHelper分页插件

 一、集成步骤

1、添加PageHelper插件依赖

2、注册分页对象PageHelper到Spring容器中

3、创建分页实体类

4、分页功能实现只需要添加 Page page= PageHelper.startPage(currentPage,PageBean.PAGE_SIZE,true);一行代码，既可自动实现分页功能。重点注意该行代码必须在业务SQL语句代码上一行。

 二、实现

1、添加PageHelper插件依赖

        
        
            com.github.pagehelper
            pagehelper-spring-boot-starter
            1.2.3
        

2、注册分页对象PageHelper到Spring容器中

package org.cm.channelmanage.config;

import com.github.pagehelper.PageHelper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.Properties;

@Configuration
public class PageHelperConfig {

    @Bean
    public PageHelper pageHelper(){
        PageHelper pageHelper = new PageHelper();
        Properties properties = new Properties();
//        该参数默认为false
//        设置为true时，会将RowBounds第一个参数offset当成pageNum页码使用
//        和startPage中的pageNum效果一样
//        properties.setProperty("offsetAsPageNum","true");
//        properties.setProperty("rowBoundsWithCount","true");
//        properties.setProperty("reasonable","true");
        properties.setProperty("dialect","mysql");    //配置mysql数据库的方言
        pageHelper.setProperties(properties);
        return pageHelper;
    }
}

3、创建分页实体类

package org.cm.channelmanage.result;

import java.util.List;

/**
 * 分页实体
 */
public class PageBean {

    public static final Integer PAGE_SIZE = 15;

    // 当前页
    private Integer currentPage = 1;
    // 每页显示的总条数
    private Integer pageSize;
    // 总条数
    private Integer totalNum;
    // 是否有下一页
    private Integer isMore;
    // 总页数
    private Integer totalPage;
    // 开始索引
    private Integer startIndex;
    // 分页结果
    private List 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 getItems() {
        return items;
    }

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

4、业务实现类

    @Override
    public ResultBundle