如何将带有$ajax的JSON参数传递给asmx web服务

本文关键字：参数传递 JSON asmx 服务 web ajax | 更新日期: 2023-09-27 18:26:54

我的参数如下：

var pMaster = '{"tid" : "474", "fid":"2"}';
var pDetail = '[{"recid":5618,"tid":"474","itemid":"1435","nar1":""},{"recid":5619,"tid":"474","itemid":"1203","nar1":""},{"recid":5620,"tid":"474","itemid":"1205","nar1":""}]';
var e = '{PurcMast: ' + pMaster  + ', PurDetail: ' + pDetail + '}';

我调用ajax如下

$.ajax({
        type: "POST",
        url: "WebService.asmx/saveValue",
        data: e,
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (result) {
            alert(result.d);
        },
        error: function (jqXHR) { alert(jqXHR.responseText); }
    });

和WebService.asmx代码如下：

[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
[WebMethod]    
public void saveValue(string PurcMast, string PurDetail)
{
    System.Data.DataTable purMaster = Common.CommonFunction.convertJSON2Table(Purchase);
    System.Data.DataTable purDetail = Common.CommonFunction.convertJSON2Table(PurchaseDetail);
}

我得到的错误如下：

未捕获错误。｛"Message"："未为类型''u0027System.String''u0027."、"StackTrace"："在System.Web.Script.Serialization.ObjectConverter.ConvertDictionaryToObject（IDictionary 2 dictionary, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object'u0026 convertedObject)'r'n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object'u0026 convertedObject)'r'n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object'u0026 convertedObject)'r'n at System.Web.Script.Services.WebServiceMethodData.StrongTypeParameters(IDictionary 2 rawParams）''r''n在System.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams（对象目标，IDictionic 2 parameters)'r'n at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary 2 2 rawParams）定义无参数构造函数"''''r''n位于System.Web.Script.Services.RestHandler.ExecuteWebServiceCall（HttpContext上下文，WebServiceMethodData方法数据）"，"ExceptionType"："System.MissingMethodException"｝

伙计们请帮帮我，我不明白我做错了什么。

如何将带有$ajax的JSON参数传递给asmx web服务

我在我的网站上做这件事。这就是我必须做的…

// remove the outer quotes so they are json objects then json encode.
var pMaster = JSON.stringify({"tid" : "474", "fid":"2"});
var pDetail = JSON.stringify(
    {"[{"recid":5618,"tid":"474","itemid":"1435","nar1":""}, 
    {"recid":5619,"tid":"474","itemid":"1203","nar1":""},
    {"recid":5620,"tid":"474","itemid":"1205","nar1":""}]);
// then create e by stringify a second time
var e = JSON.stringify({PurcMast: pMaster , PurDetail: pDetail });

这对我很有效。你只是创建字符串，而不是序列化json对象。

我猜您传递数据的方式不对。试试这个：

var pMaster = '{"tid" : "474", "fid":"2"}';
var pDetail = '[{"recid":5618,"tid":"474","itemid":"1435","nar1":""},{"recid":5619,"tid":"474","itemid":"1203","nar1":""},{"recid":5620,"tid":"474","itemid":"1205","nar1":""}]';
$.ajax({
        type: "POST",
        url: "WebService.asmx/saveValue",
        data: {PurcMast: pMaster, PurDetail: pDetail },
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (result) {
            alert(result.d);
        },
        error: function (jqXHR) { alert(jqXHR.responseText); }
    });

您的URL是url: "WebService.asmx/saveValue"，而方法名称是savePurchase

$.ajax({
        type: "POST",
        url: "WebService.asmx/savePurchase",
        data: e,
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (result) {
            alert(result.d);
        },
        error: function (jqXHR) { alert(jqXHR.responseText); }
    });

我认为这应该奏效。

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