easyUI datagrid 分頁參數page和rows

Struts2獲取easyUI datagrid 分頁參數page和rows

 

用pageHelper分頁時，只要是能夠獲取前台傳來的兩個參數page和rows基本就完成了很大一部分。

獲取方法：定義兩個變量page和rows，設置對應的getter，setter方法，在方法中直接獲取就能打得。easyUI默認的每次請求時都會傳遞這兩個參數。

public int getPage() {
        return page;
    }

    public void setPage(int page) {
        this.page = page;
    }

    public int getRows() {
        return rows;
    }

    public void setRows(int rows) {
        this.rows = rows;
    }

public String getAllPages() {
        List<Emp> plist = empDao.findAll();
        PageHelper.startPage(page, rows);
        List<Emp> elist = empDao.findAll();
        // 判斷
        if (elist.size() > 0) {
            map.put("total", plist.size());
            map.put("rows", elist);
            return SUCCESS;
        }
        return ERROR;
    }

返回的數據必須轉成json格式

[html] view plain copy

 

springmvc

 

page,rows分頁請求參數，rows和total結果參數

@RequestMapping(value = "/getSalaryList.rst", method = {RequestMethod.GET, RequestMethod.POST})
@ResponseBody
public Object getSalaryList (int page,int rows,@RequestParam(value="key",required=false) String key){
ICoreRequestContext ctx = CoreRequestContextUtil.getCoreRequestContext();
SSOUser ssoUser = ctx.getCurrentUser();
if (ssoUser.isAnonymous()) {
//return new Result(ResultCode.ERROR.getCode(),"用戶未登錄");
return alertError("用戶未登錄！");
}
HiberSession dbSession = null;
/* LostPropPermissionChecker.checkPermission(this.getAccessContext());*/
try {
dbSession = (HiberSession) CoreplusEnv.getDBSessionFactory().getDBSession();
dbSession.beginTransaction();
Map<String, Object> params = new HashMap<String, Object>();//參數集合
if(!StringUtil.isEmpty(key)){
params.put("key", "%"+key+"%");
}
params.put("begin", page-1);
params.put("length", rows);
LightAppDBUtil _dbUtil = LightAppDBUtil.getInstance();
Query query = _dbUtil.parserNamedQuery(dbSession, "getSalaryList", params);
//轉譯成需要的類Salary
ResultTransformer rt = Transformers.aliasToBean(Salary.class);
List<Salary> salaryList = query.setResultTransformer(rt).list();
JSONObject result= new JSONObject();
if (salaryList == null || salaryList.isEmpty()) {
result.put("total", 0);
result.put("rows", salaryList);
return result;
}
int total=inquiryTotal();
// jo.put("errMsg", "");
result.put("rows", salaryList);
result.put("total", total);
// return new DataGridVO(total,salaryList);
return result;
} catch (Exception e) {
_log.error("查詢工資列表失敗！", e);
dbSession.rollback();
return alertError("查詢工資列表異常");
} finally {
closeSession(dbSession);
}

}