js+ajax处理java后台返回的json对象循环创建到表格的方法

本文实例讲述了js+ajax处理java后台返回的json对象循环创建到表格的方法。，具体如下：

//注：LO是表格的id； 需要自己创建表头， n行，9列的表格；var tab_id;function varify(cardinno) {tab_id=document.getElementById("Layer1");displayDiv();tab_id.style.display="none";var url="getRefInfoServlet?cardInNo="+cardinno;var myAjax=new Ajax.Request(url,{method:'post', parameters:'0', onSuccess:doOnComplete, asynchronous:true});}var doOnComplete=function(xml_httpRequest){var msg=eval(xml_httpRequest.responseText);var info=msg.length;var row;var col;if(info>0){for(var i=0;i<info;i++){row = L0.insertRow(L0.rows.length);row.insertCell(0).innerHTML =" "+msg[i].a;row.insertCell(1).innerHTML =" "+msg[i].b;row.insertCell(2).innerHTML =" "+msg[i].c;row.insertCell(3).innerHTML =" "+msg[i].d;row.insertCell(4).innerHTML =" "+msg[i].e;row.insertCell(5).innerHTML =" "+msg[i].f;row.insertCell(6).innerHTML =" "+msg[i].g;row.insertCell(7).innerHTML =" "+msg[i].h;row.insertCell(8).innerHTML =" "+msg[i].i;row.setAttribute("align", "center");}tab_id.style.display="block";}else{tab_id.innerHTML="<center>抱歉，该卡未开通，获取不到租还车信息！</center>";tab_id.style.width = "80%";  tab_id.style.position = "absolute";//绝对位置显示tab_id.style.display="block";}removeDiv();}//遮罩层显示displayDiv=function(){  var mybg = document.createElement("div");  mybg.setAttribute("id","mybg");  mybg.innerHTML="<center>正在处理中, 请稍候<img src='lib/images/loading.gif'></img></center>";  mybg.style.width = "100%";  mybg.style.position = "absolute";//绝对位置显示  mybg.style.top = "260";  mybg.style.left = "0";  mybg.style.zIndex = "100";//z轴位置  mybg.style.opacity = "0.8";//透明度  mybg.style.filter = "Alpha(opacity=80)";//滤镜显示透明度  document.body.appendChild(mybg);}//遮罩层移除removeDiv=function(){document.body.removeChild(mybg);}

java后台存入json对象：

/*** 根据卡内码得到最近的租还车记录* 返回json对象* @param cardInNo* @return*/public String getRefInfo(String cardInNo){StringBuffer bf=new StringBuffer(1024);bf.append("");//sql语句System.out.println(bf.toString());/************ 存储json对象***************/List<JSONObject> jsonList=new ArrayList<JSONObject>();    try {    /****************获得判断信息存入数组中*******************/    String [][] str=getArrayByName(bf.toString());    if(str!=null){    for (int i = 0; i < str[0].length; i++) {    JSONObject returnValue =new JSONObject();    returnValue.put("a", str[0][i])    .put("b", str[1][i])    .put("c", str[2][i].trim().equals("")?"":str[2][i].substring(0, 19))    .put("d", str[3][i].trim().equals("")?"":str[3][i].substring(0, 19))    .put("e", str[4][i])    .put("f", str[5][i])    .put("g", str[6][i])    .put("h", str[7][i])    .put("i", str[8][i]);    jsonList.add(returnValue);    }  }}catch (Exception e) {e.printStackTrace();}System.out.println(jsonList.toString());return jsonList.toString();}