我正在尝试将一堆我的IndexedDB数据（表格）作为 JSON发送到我的ASP.NET WebService ..我已经尝试了所有但无法解决它..这是从我的控制台窗口我的错误messafe ..
function Insert(Applicant) {
$.ajax({ type: "POST", async: false, url: "/WebService1.asmx/Insert",
//datatype: "text",
data: JSON.stringify({ ApplicantList: Applicant }),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(str) { alert("Message: "+str.d); },
error: function(err) { alert("Error: "+err.d); } });
}
错误
ExceptionType: "System.InvalidOperationException"
Message: "Cannot convert object of type 'System.String' to type 'System.Collections.Generic.List`1[IndexedDB.Applicant]'"
StackTrace: " at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Obj
{"Message":"Cannot convert object of type \u0027System.String\u0027 to type \u0027System.Collections.Generic.List`1[IndexedDB.Applicant]\u0027","StackTrace":" at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToType(Object o, Type type, JavaScriptSerializer serializer)\r\n at System.Web.Script.Services.WebServiceMethodData.StrongTypeParameters(IDictionary`2 rawParams)\r\n at System.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams(Object target, IDictionary`2 parameters)\r\n at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams)\r\n at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.InvalidOperationException"}
IndexedDB代码
cursor.onsuccess = function(e) {
var result = e.target.result;
console.log(result);
if(result) {
if(json == "") {
json += " [ ";
}
else {
json += ",";
}
json += " {\"Id\":\""+result.value["id"]+"\", ";
json += " \"Applicant_Name\":\""+result.value["AM_Applicant_Name"]+"\", ";
json += " \"Father_Name\":\""+result.value["AM_Father_Name"]+"\", ";
json += " \"Mobile_No\":\""+result.value["AM_Mobile_No"]+"\", ";
json += " \"Address\":\""+result.value["AM_Address"]+"\", ";
json += " \"Address1\":\""+result.value["AM_Address1"]+"\", ";
json += " \"Address2\":\""+result.value["AM_Address2"]+"\", ";
json += " \"Pin_Code\":\""+result.value["AM_Pin_Code"]+"\", ";
json += " \"District_Code\":\""+result.value["AM_District_Code"]+"\", ";
json += " \"Taluk_Code\":\""+result.value["AM_Taluk_Code"]+"\", ";
json += " \"Hobli_Code\":\""+result.value["AM_Hobli_Code"]+"\", ";
json += " \"Village_Code\":\""+result.value["AM_Village_Code"]+"\", ";
json += " \"Habitation_Code\":\""+result.value["AM_Habitation_Code"]+"\", ";
json += " \"Reservation_Code\":\""+result.value["AM_Reservation_Code"]+"\", ";
json += " \"Caste_Code\":\""+result.value["AM_Caste_Code"]+"\"} ";
result.continue();
}
}
cursor.onerror = function(e) {
console.log(e.target.error.name);
alert(e.target.error.name);
}
trans.oncomplete = function() {
if(json != "") {
json += "];";
//alert(json);
Insert(json);
}
}
网络服务
[System.Web.Script.Services.ScriptService]
public class WebService1 : System.Web.Services.WebService
{
[WebMethod]
public string Insert(List<Applicant> ApplicantList)
{
string value = "";
if (ApplicantList != null)
{
foreach (var item in ApplicantList)
{
value += item.Applicant_Name + " ";
}
}
return value;
}
}
我将json值传递给我的网络服务
{"ApplicantList":" [
{\"Id\":\"14\", \"Applicant_Name\":\"arun\",
\"Father_Name\":\"gopi\", \"Mobile_No\":\"7875645756\", \"Address\":\"rter\",
\"Address1\":\"werty\", \"Address2\":\"rter\", \"Pin_Code\":\"674564\",
\"District_Code\":\"8\", \"Taluk_Code\":\"5\", \"Hobli_Code\":\"2\",
\"Village_Code\":\"642100\", \"Habitation_Code\":\"0\", \"Reservation_Code\":\"2\",
\"Caste_Code\":\"383\"} ,
{\"Id\":\"12\", \"Applicant_Name\":\"asha\",
\"Father_Name\":\"qwasha\", \"Mobile_No\":\"8968567675\", \"Address\":\"asdfgh\",
\"Address1\":\"fjk\", \"Address2\":\"dfjhk\", \"Pin_Code\":\"765765\",
\"District_Code\":\"9\", \"Taluk_Code\":\"3\", \"Hobli_Code\":\"2\",
\"Village_Code\":\"668800\", \"Habitation_Code\":\"0\", \"Reservation_Code\":\"5\",
\"Caste_Code\":\"788\"} ,
{\"Id\":\"13\", \"Applicant_Name\":\"asha\",
\"Father_Name\":\"mani\", \"Mobile_No\":\"9757543346\", \"Address\":\"sdf\",
\"Address1\":\"sdfsd\", \"Address2\":\"gdf\", \"Pin_Code\":\"565664\",
\"District_Code\":\"8\", \"Taluk_Code\":\"6\", \"Hobli_Code\":\"1\",
\"Village_Code\":\"623600\", \"Habitation_Code\":\"0\", \"Reservation_Code\":\"4\",
\"Caste_Code\":\"751\"}
];"}
申请人类
public class Applicant
{
public Applicant() { }
public string Applicant_Name { get; set; }
public string Father_Name { get; set; }
public string Address { get; set; }
public string Address1 { get; set; }
public string Address2 { get; set; }
public string Mobile_No { get; set; }
public string Pin_Code { get; set; }
public string District_Code { get; set; }
public string Taluk_Code { get; set; }
public string Hobli_Code { get; set; }
public string Village_Code { get; set; }
public string Habitation_Code { get; set; }
public string Reservation_Code { get; set; }
public string Caste_Code { get; set; }
public string Id { get; set; }
}
答案 0 :(得分：1)
虽然这不是同一个问题，但我并没有将其作为重复报告。但是你可以在here上找到答案，因为你似乎犯了类似的错误。尝试更改js函数和JSON创建，如下所示：
var Applicant =
[
{\"Id\":\"14\", \"Applicant_Name\":\"arun\",\"Father_Name\":\"gopi\", \"Mobile_No\":\"7875645756\", \"Address\":\"rter\", \"Address1\":\"werty\", \"Address2\":\"rter\", \"Pin_Code\":\"674564\", \"District_Code\":\"8\", \"Taluk_Code\":\"5\", \"Hobli_Code\":\"2\", \"Village_Code\":\"642100\", \"Habitation_Code\":\"0\", \"Reservation_Code\":\"2\", \"Caste_Code\":\"383\"}
,
{\"Id\":\"12\", \"Applicant_Name\":\"asha\", \"Father_Name\":\"qwasha\", \"Mobile_No\":\"8968567675\", \"Address\":\"asdfgh\", \"Address1\":\"fjk\", \"Address2\":\"dfjhk\", \"Pin_Code\":\"765765\", \"District_Code\":\"9\", \"Taluk_Code\":\"3\", \"Hobli_Code\":\"2\", \"Village_Code\":\"668800\", \"Habitation_Code\":\"0\", \"Reservation_Code\":\"5\", \"Caste_Code\":\"788\"}
,
{\"Id\":\"13\", \"Applicant_Name\":\"asha\", \"Father_Name\":\"mani\", \"Mobile_No\":\"9757543346\", \"Address\":\"sdf\", \"Address1\":\"sdfsd\", \"Address2\":\"gdf\", \"Pin_Code\":\"565664\", \"District_Code\":\"8\", \"Taluk_Code\":\"6\", \"Hobli_Code\":\"1\", \"Village_Code\":\"623600\", \"Habitation_Code\":\"0\", \"Reservation_Code\":\"4\", \"Caste_Code\":\"751\"}
];
function Insert() {
$.ajax({ type: "POST", async: false, url: "/WebService1.asmx/Insert",
//datatype: "text",
data: JSON.stringify({ ApplicantList: Applicant }),
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(str) { alert("Message: "+str.d); },
error: function(err) { alert("Error: "+err.d); } });
}
希望这有帮助。