ibatis 实现分页查询 简单粗暴

sqlMap中要有两个方法：count、pageSelect

     

       

        select count(*) from t_dat_dict

    ]]>

     

     

     

           select

           

       

             from t_dat_dict

         ]]>

           

                $sortColumns$

           

     

Dao层 调用count查询总记录条数。如有其他过滤条件则在page的Filter中添加

public String getCountQuery() {

           return "Cowboys.count";

     }

/**

      * 分页查询记录

      *

      * @param statementName

      * @param pageRequest

      * @return

      */

     protected Page pageQuery(String statementName, PageRequest pageRequest) {

           //符合条件的总记录数

           Number totalCount = (Number) this.getSqlMapClientTemplate().queryForObject(getCountQuery(),

                     pageRequest.getFilters());

           //分页对象

           Page page = new Page(pageRequest, totalCount.intValue());

           // 与getSqlMapClientTemplate().queryForList(statementName,

           // parameterObject)配合使用

           Map otherFilters = new HashMap();

           //页起始记录数

           otherFilters.put("offset", page.getFirstResult());

           //分页大小

           otherFilters.put("pageSize", page.getPageSize());

           //页结束记录数

           otherFilters.put("lastRows", page.getFirstResult() + page.getPageSize());

           //排序信息

           otherFilters.put("sortColumns", pageRequest.getSortColumns());

           // 混合两个filters为一个filters,MapAndObject.get()方法将在两个对象取值,Map如果取值为null,则再在Bean中取值

           Map parameterObject = new MapAndObject(otherFilters, pageRequest.getFilters());

           //分页查询

           List list = getSqlMapClientTemplate().queryForList(statementName, parameterObject, page.getFirstResult(),

                     page.getPageSize());

           page.setResult(list);

           return page;

     }

     /**

      * 根据页面查询条件，取得 WalletMchtInfoReg 表的分页信息.

      * @param pageRequest 页面请求参数

      * @return WalletMchtInfoReg 表的分页信息

      */

     public Page findByPageRequest(PageRequest pageRequest) {

           return pageQuery("Cowboys.pageSelect", pageRequest);

     }

controller层调用 此处可以设置pageSize，pageNum，filter等条件

@GET

     @RequestMapping(value = "/v4", method = RequestMethod.GET)

     public @ResponseBody Page getPage() {

           PageRequest

           pageRequest.setPageSize(5);

           Page page = cowboysDao.findByPageRequest(pageRequest);

           return page;

     }