java 封装前台 查询

这里只是做一个示意性的例子，具体还是需要参看具体情况 

 

@Controller

public class BaseControler

{

 

    protected interface DoPage{

        public PageInfo doInitPage(HttpServletRequest request, PageInfo page);

    }

 

    public String findByPage(final DoPage doPage, final HttpServletRequest request){

        int p = NumberUtils.toInt(request.getParameter("page"), 1);

        int rows = NumberUtils.toInt(request.getParameter("rows"), 10);

        PageInfo page = new PageInfo();

        page.setPage(p);

        page.setRows(rows);

        page = doPage.doInitPage(request, page);

        return JSONUtil.outputJSONDataByList(page);

    }

}

 

 

@Controller

public class TestController extends BaseControler

{

    @Autowired

    private ITestService testService;

 

    @RequestMapping(value = "/testData", produces = "text/plain;charset=UTF-8")

    @ResponseBody

    public String testData(HttpServletRequest request){

        return findByPage(new DoPage(){

            @Override

            public PageInfo doInitPage(HttpServletRequest request, PageInfo page)

            {

                String keyword = request.getParameter("keyword");

                return testService.selectList(keyword, page);

            }

        }, request);

    }

}

 

 

@Service

public class TestService implements ITestService{

    @Resource

    private SqlSession sqlSession;

 

    @Override

    public PageInfo selectList(String keyword, PageInfo page)

    {

        HashMap<String, Object> params = new HashMap<String, Object>();

        String k = StringUtils.trimToNull(keyword);

        if (k != null)

        {

            params.put("keyword", SqlUtils.generateLikeString(k));

        }

        params.put("page", page);

        List<Map> result = sqlSession.selectList("com.test.dao.TestMapper.selectListPage", params);

        page.setResultsList(result);

        return page;

    }

 

}