JavaScript文字列配列をjQuery(POST)を介してC#WebMethodに渡したい:
$.ajax({
type: "POST", // GET or POST or PUT or DELETE verb
url: PageURL + 'ChangeColor', // Location of the service
data: "{ 'OriginalColorHex': '" + JSON.stringify(clipartOriginalColorsHex) + "','ModifiedColorHex':'" + JSON.stringify(clipartModifiedColorsHex) +
"','OriginalColorRGB': '" + JSON.stringify(clipartOriginalColorsRGB) + "','ModifiedColorRGB':'" + JSON.stringify(clipartModifiedColorsRGB) +
"','fileName':'" + clipartFileName + "' }",
contentType: "application/json; charset=utf-8", // Content type sent to server
dataType: "json", // Expected data format from server
processdata: true, // True or False
traditional: true,
success: function (result) { // On Successful service call
console.log(result);
}
});
Ajax呼び出しで送信されるデータは次のようになります
{ 'OriginalColorHex': '["#000000","#006565","#cccc99"]', 'ModifiedColorHex': '["#3366CC","#cc5500","#3366cc"]', 'OriginalColorRGB': '["rgb(0,0,0)","rgb(0,101,101)","rgb(204,204,153)"]', 'ModifiedColorRGB': '["rgb(51, 102, 204)","rgb(204, 85, 0)","rgb(51, 102, 204)"]', 'fileName': '179.svg' }
C#WebMethod:
[WebMethod]
public static string ChangeClipartColor(string[] OriginalColorHex, string[] ModifiedColorHex, string[] OriginalColorRGB, string[] ModifiedColorRGB, string fileName)
{
// Code Here
}
エラー
{
"Message":"Cannot convert object of type \u0027System.String\u0027 to type \u0027System.String[]\u0027",
"StackTrace":" 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 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"
}
クイックフィックス
JSON配列は引用符で囲む必要はありません。これは有効なJSONです。
{
"OriginalColorHex": [
"#000000",
"#006565",
"#cccc99"
]
}
JSONLint などのツールを使用してJSONを検証し、有効であることを確認してください。 WebMethodは、文字列配列を問題なく受け入れることができるはずです。
少し良い方法
JSONを文字列として作成する代わりに、オブジェクトを作成し、JavaScriptに変換を処理させます。
var clipartOriginalColorsHex = ['#000000','#006565','#cccc99'];
var clipartModifiedColorsHex = ['#3366CC','#cc5500','#3366cc'];
var clipartOriginalColorsRGB = ['rgb(0,0,0)','rgb(0,101,101)','rgb(204,204,153)'];
var clipartModifiedColorsRGB = ['rgb(51, 102, 204)','rgb(204, 85, 0)','rgb(51, 102, 204)'];
var fileName = '179.svg';
var myData = {
OriginalColorHex: clipartOriginalColorsHex,
ModifiedColorHex: clipartModifiedColorsHex,
OriginalColorRGB: clipartOriginalColorsRGB,
ModifiedColorRGB: clipartModifiedColorsRGB,
fileName: fileName
};
$.ajax({
type: "POST", //GET or POST or PUT or DELETE verb
url: PageURL + 'ChangeColor', // Location of the service
data: JSON.stringify(myData),
contentType: "application/json; charset=utf-8", // content type sent to server
dataType: "json", //Expected data format from server
processdata: true, //True or False
traditional: true,
success: function (result) {//On Successful service call
console.log(result);
}
});
はるかにクリーンでエラーが発生しにくく、テストが容易です。これが fiddle です。
値が配列ではないためです。配列のように見える文字列を囲む引用符を削除します。
{ 'OriginalColorHex': ["#000000","#006565","#cccc99"],'ModifiedColorHex':["#3366CC","#cc5500","#3366cc"],'OriginalColorRGB': ["rgb(0,0,0)","rgb(0,101,101)","rgb(204,204,153)"],'ModifiedColorRGB':["rgb(51, 102, 204)","rgb(204, 85, 0)","rgb(51, 102, 204)"],'fileName':'179.svg' }
文字列( '["#000000"、 "#006565"、 "#cccc99"]')をstring []に渡しています。配列の周りの単一引用符を取り除きます。これはそれを行うはずです:
$.ajax({
type: "POST", //GET or POST or PUT or DELETE verb
url: PageURL + 'ChangeColor', // Location of the service
data: "{ 'OriginalColorHex': " + JSON.stringify(clipartOriginalColorsHex) + ",'ModifiedColorHex':" + JSON.stringify(clipartModifiedColorsHex) +
",'OriginalColorRGB': " + JSON.stringify(clipartOriginalColorsRGB) + ",'ModifiedColorRGB':" + JSON.stringify(clipartModifiedColorsRGB) +
",'fileName':" + clipartFileName + " }",
contentType: "application/json; charset=utf-8", // content type sent to server
dataType: "json", //Expected data format from server
processdata: true, //True or False
traditional: true,
success: function (result) {//On Successful service call
console.log(result);
}
});
すべてをまとめた後、データを文字列化するのを待つことで、人生をより簡単にすることができます。
var data = {
OriginalColorHex: clipartOriginalColorsHex,
ModifiedColorHex: clipartModifiedColorsHex,
OriginalColorRGB: clipartOriginalColorsRGB,
ModifiedColorRGB: clipartModifiedColorsRGB,
fileName: clipartFileName
};
$.ajax({
type: "POST", // GET or POST or PUT or DELETE verb
url: PageURL + 'ChangeColor', // Location of the service
data: JSON.stringify(data),
contentType: "application/json; charset=utf-8", // content type sent to server
dataType: "json", // Expected data format from server
processdata: true, // True or False
traditional: true,
success: function (result) { // On Successful service call
console.log(result);
}
});