SpringBoot使用MybatisPlus分页插件

MybatisPlus3.4.1版本

1、配置分页插件

@Configuration
public class MybatisPlusConfig {

    /*    旧版本配置
    @Bean
    public PaginationInterceptor paginationInterceptor(){
        return new PaginationInterceptor();
    }*/

    /**
     * 新的分页插件,一缓和二缓遵循mybatis的规则,需要设置
     * MybatisConfiguration#useDeprecatedExecutor = false 避免缓存出现问题
     */
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }

    @Bean
    public ConfigurationCustomizer configurationCustomizer() {
        return configuration -> configuration.setUseDeprecatedExecutor(false);
    }
}

2、添加@MapperScan注解，扫描mapper接口

@SpringBootApplication
@MapperScan("com.donleo.mp.mapper")
public class MybatisPlusApplication {

    public static void main(String[] args) {
        SpringApplication.run(MybatisPlusApplication.class, args);
    }

}

3、测试

 /**
     * MybatisPlus分页插件使用
     */
    @Test
    void TestPagination(){
        Page<User> userPage = new Page<User>(1,2);
        Page<User> pageList = userMapper.selectPage(userPage, new QueryWrapper<User>()
                .eq("nick_name", "xx")
        );
        long current = pageList.getCurrent();
        long size = pageList.getSize();
        long total = pageList.getTotal();

        System.out.println("当前页："+current);
        System.out.println("一页显示几条："+size);
        System.out.println("总条数："+total);
        System.out.println("查询数据："+pageList.getRecords());
    }

查询结果：

控制台打印结果：