ajax异步请求后台数据处理

 $.ajax({
             type: "POST",
             url: "./rule/list/device/list",
             data: JSON.stringify(obj),
             dataType: "json",
             headers: {
                 'Accept': 'application/json',
                 'Content-Type': 'application/json'
             },
             success: function (data) {
                 for (var i = 0; i < data.length; i++) {
                     //去重复
                     var hasSame = false;
                     for(var j=0;j < temp.length;j++){
                         if(temp[j].deviceId == data[i].deviceId){
                             hasSame = true;
                             break;
                         }
                     }
                     if(hasSame){
                         continue;
                     }
                     var html = '<tr><td><input type="checkbox" name="checkedId2" value="' + data[i].deviceId + '" onclick="chooseStoreDevice(' + data[i].deviceId + ')" id="d_' + data[i].deviceId + '"></td>' +
                             '<td>' + data[i].deviceCode + '</td><td>' + data[i].deviceName + '</td><td>' + data[i].storeName + '</td></tr>';
                     $("#tb3").append(html);
                     temp.push(data[i]);
                 }
 //                    console.log(JSON.stringify(temp));
             }
         });

     }

注意：这里headers必须要的，不然后台接受不到请求。