从jquery ajax请求发送数据不起作用

Question

我有一个从jquery ajax到ActionResult方法的帖子请求，如下所示：

$("#itemTextbox, #itemTextboxNew, #quantity1Textbox").on("keydown", function (e) {
if ((e.keyCode == 120){
   var GetReportLast5SellAndBuyURL="/Trd/SellInvoice/GetReportLast5SellAndBuy";
   itemCode = $(this).val();
   $.ajax({
        type: "POST",
        url: GetReportLast5SellAndBuyURL,
        data: {ItemCode:itemCode},
        //contentType: "application/json; charset=utf-8",
        context: this,
        processData: false
    }).done(function (msg) { ... somethings ...});}

在控制器中，ActionResult是：

    [HttpPost]
    public ActionResult GetReportLast5SellAndBuy(string ItemCode)
    { ... somthings ...}

但是当调用ActionResult时，“ItemCode”为空......本章有什么问题？

我尝试了不同形式的这个食谱，但问题仍然存在..

Answer 1

尝试这个：

 $.ajax({
        type: "POST",
        url: GetReportLast5SellAndBuyURL,
        data: JSON.stringify({ItemCode:itemCode}),
        datatype: "JSON",
        contentType: "application/json; charset=utf-8",
        processData: false
    }).done(function (msg) { ... somethings ...});}

Answer 2

只需在脚本中注释processData：false即可

$("#itemTextbox, #itemTextboxNew, #quantity1Textbox").on("keydown", function (e) {
if ((e.keyCode == 120){
   var GetReportLast5SellAndBuyURL="/Trd/SellInvoice/GetReportLast5SellAndBuy";
   itemCode = $(this).val();
   $.ajax({
        type: "POST",
        url: GetReportLast5SellAndBuyURL,
        data: {ItemCode:itemCode},
        //contentType: "application/json; charset=utf-8",
        context: this
       // processData: false
    }).done(function (msg) { ... somethings ...});}

很好地解释了[ 在jQuery中将processData设置为false会破坏我的AJAX请求

Answer 3

 $("#itemTextbox, #itemTextboxNew, #quantity1Textbox").on("keydown", function (e) { if ((e.keyCode == 120){ $.ajax({ type: "POST", url: "/Trd/SellInvoice/GetReportLast5SellAndBuy?ItemCode="+$(this).val(), contentType: "application/json", context: this, datatype: "JSON", processData: false }).done(function (msg) { ... somethings ...});} // OR $("#itemTextbox, #itemTextboxNew, #quantity1Textbox").on("keydown", function (e) { if ((e.keyCode == 120){ $.ajax({ type: "POST", url: "/Trd/SellInvoice/GetReportLast5SellAndBuy", contentType: "application/json", data:JSON.stringify({ItemCode:$(this).val()}) datatype: "JSON", context: this, processData: false }).done(function (msg) { ... somethings ...});}