mybatis-plus 分页查询

分页插件

package cn.com.dwr.config;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@MapperScan("cn.com.dwr.mapper") // 扫描mapper
@EnableTransactionManagement // 自动管理事务
@Configuration // 配置类
public class MybatisPlusConfig {

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor mybatisPlusInterceptor = new MybatisPlusInterceptor();
        // 乐观锁插件
        mybatisPlusInterceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());
        // 分页插件
        mybatisPlusInterceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return mybatisPlusInterceptor;
    }
}

测试

    /**
     * 测试分页查询
     */
    @Test
    public void testPage(){
        Page<User> page = new Page<>(1, 5);
        userMapper.selectPage(page, null);
        page.getRecords().forEach(System.out::println);

        // 查询总数
        System.out.println(page.getTotal());
    }

查询语句：