$(function(){
	showLoadImg();
	var size = parseInt("<%=scModels.size()%>");
	var scUrlArr = "<%=scUrlBuffer.toString()%>".split(",");
	var scVersionArr = "<%=scVersionBuffer.toString()%>".split(",");
	var scNameArr = "<%=scNameBuffer.toString()%>".split(",");
	var scURIArr = "<%=scURIBuffer.toString()%>".split(",");
	var scIDArr = "<%=scIDBuffer.toString()%>".split(",");
	var browerVersionListArr = "<%=browerVersionListBuffer.toString()%>".split("$$");
	for(var i=0;i<size;i++){
		var scUrl=scUrlArr[i];
		var scVersion=scVersionArr[i];
		var scName=scNameArr[i];
		var scUri=scURIArr[i];
		var scID=scIDArr[i];
		var browerVersionList = browerVersionListArr[i];
		$.ajax({
			url:"<%=Config.getHomeURL()%>/UpdateServiceComponentVersionAction.do?operation=checkVersion",dataType:"JSON",async:true,type:"POST",data:{
				"scUrl":scUrl,"scVersion":scVersion,"scName":scName,"scUri":scUri,"browerVersionList":browerVersionList,"scID":scID,"requestID":i
			},success:function(result){
				var scVersion1 = result.scVersion;
				var scName1 = result.scName;
				var scUrl1 = result.scUrl;
				var scID1 = result.scID;
				var reuqestID1 = parseInt(result.requestID);
				if(scVersion1!="noNeedToUpdateCurrentSC"){
					var newTr = $("<tr class='EvenOrOddRow'></tr>");
					var td1 = $("<td nowrap></td>").html("<input type='checkBox' value="+scID1+" name='singleItem'>");
					var td2 = $("<td nowrap></td>").html(scName1+"");
					var td3 = $("<td nowrap></td>").html(scUrl1+"");
					var td4 = $("<td nowrap></td>").html(scVersion1+"");
					newTr.append(td1).append(td2).append(td3).append(td4);
					$($(".listView").find("tbody")).append(newTr);
				}
				if(reuqestID1==size-1){
					hideLoadImg();
					if($("[name='singleItem']").length>0){
						$("#dataDisplayTb").removeAttr("style");
						$("#submitTb").removeAttr("style");
						$("#tipsTb").find("tr").find("td").html('<ecv:message path="core.common/servicecomponents.records"/>');
					}else{
						$("#tipsTb").find("tr").find("td").html('<ecv:message path="core.common/servicecomponents.norecords"/>');
					} 
					$("#tipsTb").removeAttr("style");
				}
			}
		});
	}
});

由于这批数据的处理时间较长，很有可能就因为会因为阻止了页面里面dom元素的渲染而导致页面timeout。

可行的解决办法是先让页面load出来，然后在页面load完后异步发送ajax请求去完成数据处理。但是如果发一次ajax请求去后台处理数据，也有可能因为数据批量大耗时长而导致ajax请求timeout，所以可以针对这一批数据，可以每一条发送一次ajax请求，然后将返回结果动态append到页面。