springboot +mybatis + pagehelper分頁插件

分頁的方法有很多，今天記錄下一種使用基於物理分頁原理實現分頁的插件pagehelper與springboot+mybatis的整合：

1、首先在pom.xml文件中添加pagehelper依賴包：

<!-- 分頁插件 -->
		<dependency>
			<groupId>com.github.pagehelper</groupId>
			<artifactId>pagehelper</artifactId>
			<version>4.1.0</version>
		</dependency>
		<dependency>
			<groupId>org.assertj</groupId>
			<artifactId>assertj-core</artifactId>
		</dependency>

2、在mybatis配置文件中添加pagehelper的配置項：

@Bean
	public SqlSessionFactory sqlSessionFactoryBean() throws Exception {
		SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
		sqlSessionFactoryBean.setDataSource(dataSource());

		//分頁插件
		PageHelper pageHelper = new PageHelper();
		Properties props = new Properties();
		props.setProperty("reasonable", "true");
		props.setProperty("supportMethodsArguments", "true");
		props.setProperty("returnPageInfo", "check");
		props.setProperty("params", "count=countSql");
		pageHelper.setProperties(props);
		//添加插件
		sqlSessionFactoryBean.setPlugins(new Interceptor[]{pageHelper});

		PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
		sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath:/mapper/*.xml"));
		return sqlSessionFactoryBean.getObject();
	}

3、使用時只需在進行數據庫操作時加上以下語句便可：

//pagenum：當前頁，pagesize：每頁條數上限
PageHelper.startPage(pageNum,pageSize);
//數據庫操作
List<CostPay> costPays = costPayDao.getByOwnerId(condition);

//包含返回記錄在內的所有分頁信息
PageInfo pageInfo = new PageInfo(costPays);

如此便可實現分頁