Spring提供的JdbcTemplate实现分页

//在application中对PageDAO进行配置，引用数据库链接信息的dataSource

public class PageDAO extends JdbcDaoSupport {

private static final PageDAO pageDAO = new PageDAO();// 单例模式

private PageDAO() {

}

public static PageDAO getInstance() {

return pageDAO;

}

private int queryForInt(String sql) {

return this.getJdbcTemplate().queryForInt(sql);

}

public List queryForList(String sql){

return this.getJdbcTemplate().queryForList(sql);

}

@SuppressWarnings("unchecked")

public PageModal getPageModal(String sql, PageBean bean) {

ApplicationContext ctx = new ClassPathXmlApplicationContext("conf/applicationContext.xml");

//需要在application配置文件中对jdbcDao调用dataSource进行引用

PageDAO jdbcDao = (PageDAO) ctx.getBean("jdbcDao");

PageModal pageModal = new PageModal();

String countSql = "select count(*) from (" + sql + ") m";

int totalCount = jdbcDao.queryForInt(countSql);// 查询总数

pageModal.setTotalCount(totalCount);

String listSql = "select m.* from (";

listSql = listSql + sql;

listSql = listSql + ") m limit "

+bean.getStart()+","+bean.getNum();

List<Map> pageList =jdbcDao.queryForList(listSql);// 查询分页数据

pageModal.setPageList(pageList);

return pageModal;

}

}

//配置的application中的信息为，dataSourcewLocal为数据库链接的基本信息

// <bean id="jdbcDao" class="com.incesoft.remote.page.PageDAO">

// <property name="dataSource">

// <ref bean="dataSourceLocal" />

// </property>

// </bean>