Smartclient 分頁
詳細閱讀AIP 可以知道paging兩個參數 分別是:endRow 、startRow、
後臺響應客戶端請求時,遵循客戶端接收參數的方式,(response /data)
listGrid dataPageSize:75默認值為75,在listgrid中一次顯示75條記錄 第一次請求中 startrow 0 endrow 75 當鼠標往下拉動,記錄數達到75條,客戶端會自動發送請求至服務器,startrow 75 endrow 150,後臺接收參數進一步處理。。and so on。。
剛開始摸索分頁功能的時候 真的是從頭到尾的把代碼懷疑了一遍 *_* 後來還
是沒出來,總感覺就差哪裡一點點沒配置好,就感覺馬上出來了。(*^__^*) 過了n久 ,終於慢悠悠的做出來了,總是這樣滴,做出來之後才覺得,簡單。。。
辛苦了。
/*
* 从数据库中提取数据 以json格式存储
*
* 以json格式将记录集返回
*
* */
@SuppressWarnings("unchecked")
@RequestMapping(value="demoApp/findAll.action")
public @ResponseBody Map<String,Object> findSupplyItemForPage(HttpServletResponse response,HttpServletRequest request){
String category = request.getParameter("category");//接受前台传过来的参数
String start = request.getParameter("_startRow");
String end = request.getParameter("_endRow");
int firstResult = 0 ;
int maxResults = 75 ;
List<supplyItem> list = null;
Map<String, Object> map = new HashMap<String, Object>();
Map<String, Object>mapreturn = new HashMap<String,Object>();
if ((null != start) && ("" != start)) {
firstResult = Integer.parseInt(start);
System.out.println("----- firstResult: " + firstResult + " -----");
}
if ((null != end) && ("" != end)) {
maxResults = Integer.parseInt(end);
System.out.println("----- maxResults: " + maxResults + " -----");
}
List<supplyItem> totalRows = this.supplyItem_service.totalRows(category);
System.out.println("打印總記錄數totals------->" + totalRows.get(0) + "條");
//判断category是否为null 若为null则查询所有记录 否则返回指定记录
if (category == null) {
list = this.supplyItem_service.findInfo();
} else {
list = this.supplyItem_service.findSupplyItemForPage(category, firstResult, maxResults);
}
map.put("endRow", maxResults);
map.put("queueStatus", 0);
map.put("totalRows", totalRows.get(0));
map.put("isDSResponse", true);
map.put("invalidateCache", false);
map.put("status", 0);
map.put("startRow", firstResult);
map.put("data", list);
mapreturn.put("response", map);
return mapreturn;
}
返回值份兩層 response 和data
前臺設置restDataSource recordXPath: response/data
isc.RestDataSource.create({
ID:"supplyItem",
dataFormat:"json", //数据格式 xml格式
recordXPath:"response/data", //--<country></country>
fields:[
{name:"itemID",title:"itemID",primaryKey:true},//countryCode設置為主鍵
{name:"itemName", title:"itemName"},
{name:"unitCost", title:"unitCost"},
{name:"sku",title:"sku"},
{name:"description",title:"description"},
{name:"category",title:"category"},
{name:"inStock",title:"inStock"},
{name:"nextShipment",title:"nextShipment"}
],
operationBindings:[
{operationType:"fetch", dataURL:"demoApp/findAll.action" },
{operationType:"add", dataURL:"demoApp/insertInfo.action"},
{operationType:"update", dataURL:"demoApp/updateInfo.action" },
{operationType:"remove", dataURL:"demoApp/deleteInfo.action" }
]
});
Dao 層 分頁sql
public List<supplyItem> findSupplyItemForPage(final String category,
final int firstResult, final int maxResults) {
return this.hibernateTemplate.executeFind(new HibernateCallback() {
public Object doInHibernate(Session session)
throws HibernateException, SQLException {
return session.createQuery("from supplyItem where category='" + category + "'")
.setFirstResult(firstResult).setMaxResults(maxResults).list();
}
});
}