MyBatisPlus分页插件实现分页功能

本教程需要有MyBatisPlus基础

后端技术：SpringBoot2.7.9、MyBatisPlus3.5.1、MySQL8
前端技术：Vue2.5.16+axios、BootStrap3.3.7

一、后端开发

1.1、配置MyBatisPlus

1.1.1、在pom.xml中添加依赖

org.springframework.bootspring-boot-starter-webcom.baomidoumybatis-plus-boot-starter3.5.1org.projectlomboklombok1.18.20mysqlmysql-connector-java8.0.32

1.1.2、在application.yml中配置数据源

server:port: 8070spring:datasource:type: com.zaxxer.hikari.HikariDataSourcedriver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://127.0.01:3306/test_plus?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&serverTimezone=GMT%2B8&allowPublicKeyRetrieval=trueusername: rootpassword: 123456mybatis-plus:type-aliases-package: demo.entityconfiguration:log-impl: org.apache.ibatis.logging.stdout.StdOutImplglobal-config:db-config:table-prefix: t_id-type: automapper-locations: classpath:mappers/*.xml

1.1.3、在启动类中配置分页插件

package demo;import com.baomidou.mybatisplus.annotation.DbType;import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;import org.mybatis.spring.annotation.MapperScan;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@SpringBootApplication@Configuration@MapperScan("demo.mapper")public class Demo {/** 配置分页插件*/@Beanpublic MybatisPlusInterceptor mybatisPlusInterceptor() {MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));return interceptor;}public static void main(String[] args) {SpringApplication.run(Demo.class);}}

1.2、后台开发

1.2.1、SQL脚本

SET NAMES utf8mb4;SET FOREIGN_KEY_CHECKS = 0;-- ------------------------------ Table structure for t_article-- ----------------------------DROP TABLE IF EXISTS `t_article`;CREATE TABLE `t_article` (`id` bigint(20) NOT NULL AUTO_INCREMENT,`title` varchar(50) DEFAULT NULL,`logo` varchar(255) DEFAULT NULL,`descn` varchar(160) DEFAULT NULL,`create_time` datetime DEFAULT NULL,`cid` bigint(20) DEFAULT NULL,PRIMARY KEY (`id`)) ENGINE=InnoDB AUTO_INCREMENT=1630090627736408069 DEFAULT CHARSET=utf8;-- ------------------------------ Records of t_article-- ----------------------------BEGIN;INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1, '扬子xx', NULL, 'eeeeeeee', '2023-01-02 00:00:00', 2);INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1630090618022400001, '扬子晚报1', NULL, 'dddsfjslfjalskd', '2023-01-03 00:00:00', 2);INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1630090625282740226, '扬子晚报2', NULL, 'dddsfjslfjalskd', '2023-01-04 00:00:00', 2);INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1630090625865748482, '扬子晚报3', NULL, 'dddsfjslfjalskd', '2023-01-05 00:00:00', 1);INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1630090626520059905, '扬子晚报4', NULL, 'dddsfjslfjalskd', '2023-01-06 00:00:00', 2);INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1630090627165982721, '扬子晚报5', NULL, 'dddsfjslfjalskd', '2023-01-07 00:00:00', 1);INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1630090627736408066, '扬子晚报6', NULL, 'dddsfjslfjalskd', '2023-01-08 00:00:00', 1);INSERT INTO `t_article` (`id`, `title`, `logo`, `descn`, `create_time`, `cid`) VALUES (1630090627736408068, 'qqq1w', 'kdsjlsfjieosjfiosjdfo', 'eeeee', '2023-02-03 00:00:00', 2);COMMIT;-- ------------------------------ Table structure for t_channel-- ----------------------------DROP TABLE IF EXISTS `t_channel`;CREATE TABLE `t_channel` (`id` bigint(20) NOT NULL,`channel_name` varchar(50) DEFAULT NULL,`create_time` datetime DEFAULT NULL,PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;-- ------------------------------ Records of t_channel-- ----------------------------BEGIN;INSERT INTO `t_channel` (`id`, `channel_name`, `create_time`) VALUES (1, '头条', '2023-02-27 17:27:14');INSERT INTO `t_channel` (`id`, `channel_name`, `create_time`) VALUES (2, '头七', '2023-02-27 17:27:14');COMMIT;SET FOREIGN_KEY_CHECKS = 1;

1.2.2、实体Article

package demo.entity;import lombok.Data;@Datapublic class Article {private Long id;private String title;private String logo;private String descn;private String createTime;private Long cid;}

1.2.3、ArticleMapper.java

package demo.mapper;import com.baomidou.mybatisplus.core.mapper.BaseMapper;import com.baomidou.mybatisplus.extension.plugins.pagination.Page;import demo.entity.Article;import org.apache.ibatis.annotations.Param;import org.springframework.stereotype.Repository;@Repositorypublic interface ArticleMapper extends BaseMapper {Page selectByPage(Page page, @Param("title") String title);}

1.2.4、ArticleMapper.xml

select * from t_article where title like '%${title}%'

1.2.5、ArticleController

package demo.controller;import com.baomidou.mybatisplus.extension.plugins.pagination.Page;import demo.entity.Article;import demo.mapper.ArticleMapper;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.CrossOrigin;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;@RestController@CrossOriginpublic class ArticleController {@Autowiredprivate ArticleMapper articleMapper;@GetMapping("/list")public Page findAll(Long pageIndex, Long pageSize){Page page = articleMapper.selectPage(new Page(pageIndex, pageSize), null);return page;}@GetMapping("/list_custom")public Page customFindAll(Long pageIndex, Long pageSize, String title){Page page = articleMapper.selectByPage(new Page(pageIndex, pageSize), title);return page;}}

二、前端开发

2.1、html代码

文章列表
编号
标题
描述
发布时间
操作
{{art.id}}
{{art.title}}
{{art.descn}}
{{art.createTime}}
修改删除
{{p}}
{{p}}

2.2、Js代码

new Vue({el: '#app',data: {articleList: null,//用于分页pageIndex: 1, //页码pageSize: 3, //每页显示的条数pageTotal: 0, //总条数pageCnt: 0 //总页数},methods: {requestArticleList(){axios.get("http://localhost:8070/list?pageIndex="+this.pageIndex+"&pageSize="+this.pageSize).then(res => {console.log(res.data)this.articleList = res.data.recordsthis.pageCnt = res.data.pagesthis.pageTotal = res.data.totalthis.pageIndex = res.data.currentthis.pageSize = res.data.size})},doGo(p){this.pageIndex = pthis.requestArticleList()}},created: function () {this.requestArticleList()}})

案例效果