MyBatisPlus 使用 IPage 分页

3.4.0之前版本

    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
        paginationInterceptor.setLimit(-1);
        paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
        return paginationInterceptor;
    }

3.4.0之后版本

package com.zsatc.server.pim.bootstrap.config;

import cn.hutool.core.lang.Snowflake;
import cn.hutool.core.util.IdUtil;
import com.baomidou.mybatisplus.autoconfigure.ConfigurationCustomizer;
import com.baomidou.mybatisplus.core.incrementer.IdentifierGenerator;
import com.baomidou.mybatisplus.extension.MybatisMapWrapperFactory;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Slf4j
@Configuration
public class MybatisPlusConfig {

    // 3.4.0 版本之后的分页配置方法
    @Bean
    public MybatisPlusInterceptor paginationInterceptor() {
        MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
        //分页拦截器
        PaginationInnerInterceptor paginationInnerInterceptor = new PaginationInnerInterceptor();

        paginationInnerInterceptor.setOverflow(false);
        paginationInnerInterceptor.setMaxLimit(500L);
        mybatisPlusInterceptor.addInnerInterceptor(paginationInnerInterceptor);
        // 设置请求的页面大于最大页后操作，true调回到首页，false继续请求默认false
        // paginationInterceptor.setOverflow(false);//设置最大单页限制数量，默认500条，-1不受限制
        // paginationInterceptor.setLimit(500);
        // 开启 count 的 join 优化,只针对部分 left join
        return mybatisPlusInterceptor;
    }

    @Bean
    public ConfigurationCustomizer configurationCustomizer() {
        return i -> i.setObjectWrapperFactory(new MybatisMapWrapperFactory());
    }

    @Bean
    public IdentifierGenerator idGenerator() {
        return new CustomIdGenerator();
    }

    // 获取long类型的id，雪花算法
    private static final Snowflake SNOWFLAKE = IdUtil.getSnowflake(1, 1);

    public class CustomIdGenerator implements IdentifierGenerator {
        @Override
        public Long nextId(Object entity) {
            return SNOWFLAKE.nextId(); // BaseUtil.getNextId();
        }
    }

}

草稿版，待有空再完善该文章

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