不借助中间页面实现JSON数据的接收

上代码：

markuplayer1.jsp:

function doTrClick(id,index){				
		var url = "<%=basePath%>markuplayer1.do?method=read";
		var pars = "id=" + id;
		var ajax = new Ajax.Request(
			 url,
			{method:'post',parameters:pars,onComplete:checkreq}
	        ); 
	}

 

function checkreq(request){
  		var info = request.responseText; 
		var info2 = eval('('+info+')'); 
		var re = info2.msg;
 		
		if(re == "success"){
			g_countryArray = info2.countryArr;	//注意地方	sendJSON中填充的数据  
			openChild("<%=basePath%>master/markuplayer/markuplayer1Details.jsp",750,380);
		}
	}

 Java页面处理：

 

String countryCodes = markuplayer1.getCountrycode();
		JSONArray countriesArray = new JSONArray();
		//set countrycodes to json array
		if(countryCodes != null && !"".equals(countryCodes)) {
			String[] countryArray = countryCodes.split(",");
			if(countryArray.length > 0) {
				List<Countries> countries = (List<Countries>)request.getSession().getServletContext().getAttribute(MyConstants.COUNTRIES_KEY);	
				for(String countrycode : countryArray) {
					for(Countries country : countries) {
						if(countrycode.trim().equalsIgnoreCase(country.getCountrycode().trim())) {
							JSONObject json = new JSONObject();
							json.put("code", country.getCountrycode().trim());
							json.put("countrynameEn", country.getCountrynameEn());
							json.put("countrynameCn", country.getCountrynameCn());
							json.put("countrynameTw", country.getCountrynameTw());
							countriesArray.add(json);
						}
					}
				}
			}
		}

JSONUtils.sendJSON(response, "success",countriesArray);

 关键部分：

public static void sendJSON(HttpServletResponse response,String message, JSONArray countrycontent) {
		response.setContentType("application/json");
		response.setCharacterEncoding("utf-8");
		PrintWriter outResponse = null;
		try {
			outResponse = response.getWriter();

			JSONObject jsonObject = new JSONObject();
			jsonObject.put("msg", message);
			jsonObject.put("countryArr", countrycontent);

			outResponse.print(jsonObject.toString());
			outResponse.flush();
		} catch (IOException e) {
			log.error("json utils exception :" + e);
		} finally {
			if(outResponse != null) {
				outResponse.close();
			}
		}
	}

 这样jsp页面就可以接收到JSONArray类型的countryArr，至此结束！

 

扩展：

markuplayer1Detail.jsp使用JSONArray类型的数据：

 var g_countryList =  [] ;
wwindow.onload = changeToReservations;
	 	function changeToReservations(){
			g_countryList = window.parent.g_countryArray;			
		}

 点Edit弹出一个页面并利用接收到的JSONArray类型来填充数据：

<span id="genCountryList" onmouseover='this.style.cursor="pointer";' onClick="genCountryListTable('idCountryList');">
										Edit	
									</span>

 

var g_countryList  = [];
function genCountryListTable( id ) {
	  			  			
			var obj = document.getElementById(id);
			if(obj) {
	  			obj.style.display = '';
	  		}
	  		
			var sCountryTable        = [];
			sCountryTable[sCountryTable.length] = "<table style='width:100%;font-size: 11px;'>";
			
			for (var i=0; i<g_countryList.length; i++)	{		
				sCountryTable[sCountryTable.length] = '<tr id="tr_'+i+'" onmouseover="domouseOver(this);" onmouseout="domouseOut(this);">';			
				sCountryTable[sCountryTable.length] = '<td style="text-align:center;">' + g_countryList[i].code + '</td>';
				sCountryTable[sCountryTable.length] = '<td>' + g_countryList[i].countrynameEn + '</td>';
				sCountryTable[sCountryTable.length] = '<td>' + g_countryList[i].countrynameCn + '</td>';
				sCountryTable[sCountryTable.length] = '<td>' + g_countryList[i].countrynameTw + '</td>';
				sCountryTable[sCountryTable.length] = '<td><a onmouseover="this.style.cursor=\'pointer\'; this.style.fontWeight=\'normal\'; this.style.color=\'white\';" onmouseout="this.style.color=\'black\'; this.style.fontWeight=\'normal\';" onclick="removeCountryCode(\''+g_countryList[i].code+'\',\'' + i + '\');">Remove</a></td>';
				sCountryTable[sCountryTable.length] = '</tr>';
			} 	
			sCountryTable.push('</table>');
			$('idCountryListContent').innerHTML = sCountryTable.join("");
	  	} 

 弹出窗口代码(省略CSS,关键)：

<!-- hidden panel of details of country list -->
					<div id="idCountryList" style="display: none;">
						<div id="idCountryListHandle">
							 <a href="javascript:;" id="close" name="close" onClick="closePanel('idCountryList')">[ x ]</a> 
		            		List of selected country
						</div>					
						<table style="border:0px solid red;width:100%;font-size: 11px;">
							<tr style="font-weight:900;">
								<td style="width:20%">Country Code</td>
								<td style="width:20%">Country name (EN)</td>
								<td style="width:20%">Country name (CN)</td>
								<td style="width:20%">Country name (TW)</td>
								<td style="width:20%">Operation</td>
							</tr>
						</table>				
						<div id="idCountryListContent"></div>
					</div>

 

效果图：