MybatisPlus 整合分页插件 PageHelper 依赖冲突的解决方案

1. pom 文件

• 不要用 pagehelper-starter

<dependency>
    <groupId>com.github.pagehelpergroupId>
    <artifactId>pagehelperartifactId>
    <version>5.1.11version>
dependency>
<dependency>
    <groupId>com.github.jsqlparsergroupId>
    <artifactId>jsqlparserartifactId>
    <version>2.1version>
dependency>

2. 配置 mybatisplus

package com.whu.config;

import com.baomidou.mybatisplus.autoconfigure.ConfigurationCustomizer;
import com.baomidou.mybatisplus.core.MybatisConfiguration;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * @author Hedon Wang
 * @create 2020-07-18 13:49
 */
@Configuration
public class MybatisPlusConfig {

    @Bean
    public PaginationInterceptor paginationInterceptor() {
        return new PaginationInterceptor();
    }


    @Bean
    public ConfigurationCustomizer mybatisConfigurationCustomizer() {
        return new ConfigurationCustomizer() {
            @Override
            public void customize(org.apache.ibatis.session.Configuration configuration) {
                configuration.addInterceptor(new com.github.pagehelper.PageInterceptor());
            }
        };
    }
}

3. 分页查询

@GetMapping("/algorithms")
public CommonResult selectAllAlgorithms(@RequestParam(value = "pageNum",defaultValue = "1")Integer pageNum,
                                        @RequestParam(value = "pageSize",defaultValue = "6")Integer pageSize,
                                        @RequestParam(value = "keyWord",defaultValue = "")String keyWord){
    //1. 开启分页查询
    PageHelper.startPage(pageNum,pageSize);
    //2. 从数据库拉取信息
    List<AlgorithmResponseVo> algorithmResponseVos =  algorithmService.getAllFullAlgorithms(keyWord);
    //3. 封装到 pageInfo 中
    PageInfo pageInfo = new PageInfo(algorithmResponseVos,5);
    //4. 传给前端
    return CommonResult.success().add("pageInfo",pageInfo);
}

这样就可以用了~

感谢该参考文章：https://blog.csdn.net/u012280292/article/details/99678037