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。