猿创征文｜SpringBoot整合MyBatis四种常用的分页方式（详细总结）

前言：

目前学习了网络上很多关于MyBatis的分页方式，看到了有很多种，零零散散的文章，于是我就对目前常用的一些分页方式进行学习总结，一条一条进行梳理，思路清晰明了，仅供大家学习和参考！

目录

一、准备工作

二、使用原生Limit关键字进行分页

三、借助MyBabtis提供的RowBounds进行分页查询

四、借助MyBatis提供的第三方PageHelper分页插件

五、借助MyBatis-Plus拦截器进行分页查询

---

一、准备工作

1、创建表结构：

CREATE TABLE `order_info`  (
  `id` int NOT NULL AUTO_INCREMENT,
  `info` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `time` datetime NULL DEFAULT NULL,
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 14 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

2、导入表数据：

INSERT INTO `order_info` VALUES (1, '购买了手机', '2022-08-25 05:34:17');
INSERT INTO `order_info` VALUES (2, '购买了电脑', '2022-08-25 07:30:39');
INSERT INTO `order_info` VALUES (3, '购买了护手霜', '2022-08-17 22:35:07');
INSERT INTO `order_info` VALUES (4, '购买了泡面', '2022-08-23 08:35:36');
INSERT INTO `order_info` VALUES (5, '购买了纸巾', '2022-07-21 15:26:06');
INSERT INTO `order_info` VALUES (6, '购买了自热米饭', '2021-06-20 13:21:06');
INSERT INTO `order_info` VALUES (7, '购买了移动硬盘', '2022-06-11 11:22:03');
INSERT INTO `order_info` VALUES (8, '购买了狗粮', '2022-05-10 11:21:02');
INSERT INTO `order_info` VALUES (9, '购买了猫粮', '2022-04-10 09:11:02');
INSERT INTO `order_info` VALUES (10, '购买了遥控器', '2022-08-22 22:35:07');
INSERT INTO `order_info` VALUES (11, '购买了裤子', '2022-08-15 08:35:36');
INSERT INTO `order_info` VALUES (12, '购买了鞋子', '2022-08-21 08:35:36');
INSERT INTO `order_info` VALUES (13, '购买了水杯', '2022-08-26 19:39:19');

3、导入pom.xml依赖

        创建新的工程的步骤我这里就省略了，所以废话不多说，直接进入正题！

注：请不要重复导入MyBatis的依赖，这里为了方便展示写到一起了，实际运用的时候，请不要混合在一起导入，不然可能会导致jar包的冲突，PageHelper和MyBatis-plus的jar包可能会产生冲突的。

    
        
            org.springframework.boot
            spring-boot-starter-jdbc
        
        
            org.springframework.boot
            spring-boot-starter-web
        

        
            mysql
            mysql-connector-java
            runtime
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        

        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.2.2
        

        
        
            com.github.pagehelper
            pagehelper-spring-boot-starter
            1.4.3
        

        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.5.2
        
    

4、配置application.yml文件

server:
  port: 8080

spring:
  datasource:
    username: 你的mysql用户名
    password: 你的mysql密码
    url: jdbc:mysql://localhost:3306/school?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC
    driver-class-name: com.mysql.cj.jdbc.Driver

mybatis:
  mapper-locations: classpath:mapping/*.xml

5、创建公用的实体类

package com.ithuang.demo.bean;

import java.util.Date;


public class OrderInfo {

    private int id;
    private String info;
    private Date time;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getInfo() {
        return info;
    }

    public void setInfo(String info) {
        this.info = info;
    }

    public Date getTime() {
        return time;
    }

    public void setTime(Date time) {
        this.time = time;
    }

    @Override
    public String toString() {
        return "OrderInfo{" +
                "id=" + id +
                ", info='" + info + '\'' +
                ", time=" + time +
                '}';
    }


}

二、使用原生Limit关键字进行分页

1、创建controller层

package com.ithuang.demo.controller;

import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.service.OrderInfoService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

@RestController
public class OrderInfoController {

    @Resource
    private OrderInfoService orderInfoService;

    @GetMapping("/getOrderInfoList")
    public List getOrderInfoList(@RequestParam(value = "pageNow",defaultValue = "1") int pageNow,
                                            @RequestParam(value = "pageSize",defaultValue = "3") int pageSize){

        return orderInfoService.getOrderInfoList(pageNow,pageSize);
    }
}

2、创建service层

package com.ithuang.demo.service;

import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.mapper.OrderInfoMapper;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service
public class OrderInfoService {

    @Resource
    private OrderInfoMapper orderInfoMapper;

    public List getOrderInfoList(int pageNow, int pageSize) {
        if(pageNow == 1){
            pageNow = 0;
        }
        return orderInfoMapper.getOrderInfoList(pageNow,pageSize);
    }
}

3、创建mapper层 

package com.ithuang.demo.mapper;

import com.ithuang.demo.bean.OrderInfo;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import java.util.List;

@Mapper
public interface OrderInfoMapper {

    List getOrderInfoList(@Param("pageNow") int pageNow,@Param("pageSize") int pageSize);
}

4、创建xml文件

    
        SELECT * FROM order_info limit #{pageNow},#{pageSize}
    

5、项目整体结构

​ 

6、使用postman进行测试，测试结果如下

​

三、借助MyBabtis提供的RowBounds进行分页查询

        RowBounds它是在SQL执行的结果进行截取分页的，所以不适合大量数据的截取和分页，它适合在查询较少的结果集当中使用。

1、创建controller层

package com.ithuang.demo.controller;

import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.service.OrderInfoService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

@RestController
public class OrderInfoController {

    @Resource
    private OrderInfoService orderInfoService;

    @GetMapping("/getOrderInfoList")
    public List getOrderInfoList(@RequestParam(value = "pageNow",defaultValue = "1") int pageNow,
                                            @RequestParam(value = "pageSize",defaultValue = "3") int pageSize){

        return orderInfoService.getOrderInfoList(pageNow,pageSize);
    }
}

2、创建Service层

package com.ithuang.demo.service;

import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.mapper.OrderInfoMapper;
import org.apache.ibatis.session.RowBounds;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service
public class OrderInfoService {

    @Resource
    private OrderInfoMapper orderInfoMapper;

    public List getOrderInfoList(int pageNow, int pageSize) {
        RowBounds rowBounds = new RowBounds(pageNow,pageSize);
        return orderInfoMapper.getOrderInfoList(rowBounds);
    }
}

3、创建Mapper层

package com.ithuang.demo.mapper;

import com.ithuang.demo.bean.OrderInfo;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.session.RowBounds;

import java.util.List;

@Mapper
public interface OrderInfoMapper {

    List getOrderInfoList(RowBounds rowBounds);
}

4、创建xml文件

    
        SELECT * FROM order_info
    

5、项目整体结构

​ 

6、使用postman进行测试，测试结果如下 

​ 

四、借助MyBatis提供的第三方PageHelper分页插件

        在MyBatis中配置了分页拦截器（PageInterceptor），就是在执行相关的Sql之前会做一些拦截的操作，这里通过调用startPage的方法，其实就是在查询getOrderInfoList之前会自动加上limit；这里通过setLocalPage方法，将分页信息保存在当前之后线程当中，查询方法与之处于同一个线程，共享ThreadLocal当中的数据，最后将getOrderInfoList查询好的数据结果放到PageInfo当中即可。

1、创建controller层

package com.ithuang.demo.controller;

import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.service.OrderInfoService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

@RestController
public class OrderInfoController {

    @Resource
    private OrderInfoService orderInfoService;

    @GetMapping("/getOrderInfoList")
    public List getOrderInfoList(@RequestParam(value = "pageNow",defaultValue = "1") int pageNow,
                                            @RequestParam(value = "pageSize",defaultValue = "3") int pageSize){

        return orderInfoService.getOrderInfoList(pageNow,pageSize);
    }
}

2、创建Service层

package com.ithuang.demo.service;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.mapper.OrderInfoMapper;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service
public class OrderInfoService {

    @Resource
    private OrderInfoMapper orderInfoMapper;

    public List getOrderInfoList(int pageNow, int pageSize) {
        PageHelper.startPage(pageNow,pageSize);
        List orderInfoList = orderInfoMapper.getOrderInfoList();
        PageInfo userPageInfo = new PageInfo<>(orderInfoList);
        return userPageInfo.getList();
    }
}

3、创建Mapper层

package com.ithuang.demo.mapper;

import com.ithuang.demo.bean.OrderInfo;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

@Mapper
public interface OrderInfoMapper {

    List getOrderInfoList();
}

4、编写xml文件

    
        SELECT * FROM order_info
    

5、项目整体结构

​

6、使用postman进行测试，测试结果如下 

​

五、借助MyBatis-Plus拦截器进行分页查询

1、编写主配置类

package com.ithuang.demo.config;

import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MybatisPlusConfig {

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor(){
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor());
        return interceptor;
    }
}

2、创建controller层

package com.ithuang.demo.controller;

import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.service.OrderInfoService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

@RestController
public class OrderInfoController {

    @Resource
    private OrderInfoService orderInfoService;

    @GetMapping("/getOrderInfoList")
    public List getOrderInfoList(@RequestParam(value = "pageNow",defaultValue = "1") int pageNow,
                                            @RequestParam(value = "pageSize",defaultValue = "3") int pageSize){

        return orderInfoService.getOrderInfoList(pageNow,pageSize);
    }
}

3、创建Service层

package com.ithuang.demo.service;

import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ithuang.demo.bean.OrderInfo;
import com.ithuang.demo.mapper.OrderInfoMapper;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service
public class OrderInfoService {

    @Resource
    private OrderInfoMapper orderInfoMapper;

    public List getOrderInfoList(int pageNow, int pageSize) {
        Page page= new Page<>(pageNow,pageSize);
        IPage iPage = orderInfoMapper.selectPage(page,null);
        return iPage.getRecords();
    }
}

4、创建Mapper层

package com.ithuang.demo.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.ithuang.demo.bean.OrderInfo;
import org.apache.ibatis.annotations.Mapper;


@Mapper
public interface OrderInfoMapper extends BaseMapper {

}

5、项目整体结构

​

6、使用postman进行测试，测试结果如下 

​

        以上就是我对目前MyBatis常用的一些分页方式进行的梳理和总结，如果有不对或者遗漏的地方欢迎大家指出！