无效的Web服务调用，缺少参数值

我一直在看这个问题，看不出问题出在哪里。 任何帮助是极大的赞赏。

[WebMethod(true)] [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)] public static string neighbourhoodTeam(string force, string neighbourhood) { //StreamManager streamMan = new StreamManager(); //return streamMan.StreamManagerUrlHandler("http://policeapi2.rkh.co.uk/api/" + force + "%2F" + neighbourhood + "%2F" + "people"); return neighbourhood + force; } 

jQuery的：

 function getOfficers(force, neighbourhood) { $.ajax({ type: "GET", contentType: "application/json; charset=utf-8", url: "../police/crimerequest.aspx/neighbourhoodTeam", data: JSON.stringify({ "force": force, "neighbourhood": neighbourhood }), dataType: "json", success: function (data) { var results = $.parseJSON(data.d); $.each(results, function (i) { businessCards.push(generateOfficerBusinessCard( results[i].name, results[i].rank, results[i].contact_details.mobile, results[i].contact_details.tel, results[i].contact_details.email)) }); PoliceApp.businessCardsPlaceHolder.html(businessCards.toString()); }, error: function (xhr, ajaxOptions, thrownError) { alert(xhr.status); alert(thrownError); alert(xhr.responseText); return false; } }); } 

我得到： {"Message":"Invalid web service call, missing value for parameter: \u0027force\u0027.","StackTrace":"

Answer 1

尝试在ajax params中使用processData: false发送。 jQuery默认会再次进行字符串化。

使用fiddler或类似工具检查网络流量，并查看实际发送到您的Web服务的内容。