基于$.ajax()方法从服务器获取json数据的几种方式(3)

//Java代码：后台获取单个数控定位器的历史表格的数据
	public void getHistorySingleData() throws IOException{
		HttpServletRequest request = ServletActionContext.getRequest();
		HttpServletResponse response = ServletActionContext.getResponse();
		response.setHeader("Content-type", "text/html;charset=UTF-8");
		response.setContentType("text/html;charset=utf-8");
		String deviceName = request.getParameter("deviceName");
		String startDate= request.getParameter("startDate");
		String endDate = request.getParameter("endDate");
		SingleHistoryData[] singleHistoryData = chartService.getHistorySingleData(deviceName,startDate, endDate);
		System.out.println(singleHistoryData.length);
		System.out.println(JSONArray.fromObject(singleHistoryData).toString());//打印：[{"time":"2016-11-11 10:00:00","state":"运行","ball":"锁紧",....},{"time":"2016-11-11 10:00:05","state":"运行","ball":"锁紧",....},{},{}....]查到几条singleHistoryData对象就打印几个对象的信息{"time":"2016-11-11 10:00:05","state":"运行","ball":"锁紧",....}
		response.getWriter().print(JSONArray.fromObject(singleHistoryData).toString());
	}

	/*js代码：选择查询某一时间段的数据，点击查询之后进行显示*/
 $("#search").click(function () {
 	var data1 = [];
 	var n;
 	var deviceName=$("body").attr("id"); 
  var startDate = $("#startDate").val();
  var endDate = $("#endDate").val();
  $.ajax({
   url:"/avvii/chart/getHistorySingleData",
   type:"post",
   data:{
    "deviceName":deviceName,
    "startDate": startDate,
    "endDate": endDate
   },
   success: function (data) {
  	 alert(data);//---->弹出[{"time":"2016-11-11 10:00:00","state":"运行","ball":"锁紧",....},{"time":"2016-11-11 10:00:05","state":"运行","ball":"锁紧",....},{},{}....]，后台传过来几条singleHistoryData对象就打印几个对象的信息{"time":"2016-11-11 10:00:05","state":"运行","ball":"锁紧",....}
 		 alert(Object.prototype.toString.call(data)); //--->弹出[object String]，说明获取的是String类型的数据
  	 var JsonObjs = eval("(" + data + ")");  //或者：var JsonObjs = $.parseJSON(data);
 		 alert(JsonObjs);//alert(JsonObjs);---->弹出[object Object],[object Object],[object Object][object Object],[object Object],[object Object]……后台传过来几条singleHistoryData对象就打印几个[object Object]
    n=JsonObjs.length;
    if(n==0){
   	 alert("您选择的时间段无数据，请重新查询");
    }
 		 for(var i = 0; i < JsonObjs.length; i++){	      
		  	  var name = JsonObjs[i]['time'];//针对每一条数据：JsonObjs[i]，或者：JsonObjs[i].time
		 	  var state = JsonObjs[i]['state'];
		 	  var ball = JsonObjs[i]['ball'];
		 	  var xd = JsonObjs[i]['xd'];
		 	  var yd = JsonObjs[i]['yd'];
		 	  var zd = JsonObjs[i]['zd'];
		 	  var xf = JsonObjs[i]['xf'];
		 	  var yf = JsonObjs[i]['yf'];
		 	  var zf = JsonObjs[i]['zf'];
      data1[i] = {name:name,state:state,ball:ball,xd:xd,yd:yd,zd:zd,xf:xf,yf:yf,zf:zf};//个数与下面表头对应起来就可以了，至于叫什么名字并不影响控件的使用
    }
 		 if(JsonObjs.length != 10){
 			 for(var j=0;j<(10-((JsonObjs.length)%10));j++){    //补全最后一页的空白行，使表格的长度保持不变
 				 data1[j+JsonObjs.length] = {name:" ",state:"",ball:"",xd:"",yd:"",zd:"",xf:"",yf:"",zf:""}; 
 			 }
 		 }
    var userOptions = {
      "id":"kingTable",        				//必须 表格id
      "head":["时间","运行状态","球头状态","X向位置/mm","Y向位置/mm","Z向位置/mm","X向承载力/Kg","Y向承载力/Kg","Z向承载力/Kg"], //必须 thead表头
      "body":data1,         				//必须 tbody 后台返回的数据展示
      "foot":true,         					// true/false 是否显示tfoot --- 默认false
      "displayNum": 10,        					//必须 默认 10 每页显示行数
      "groupDataNum":6,        					//可选 默认 10 组数
      sort:false,         					// 点击表头是否排序 true/false --- 默认false
      search:false,         					// 默认为false 没有搜索
      lang:{
       gopageButtonSearchText:"搜索"
      }
    }
    var cs = new KingTable(null,userOptions);
   }
  }); 
 });