我想通过 jQuery (POST) 将 JavaScript 字符串数组传递给 C# WebMethod:

$.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 调用中的数据如下所示

{ '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# 网络方法:

[WebMethod]
public static string ChangeClipartColor(string[] OriginalColorHex, string[] ModifiedColorHex, string[] OriginalColorRGB, string[] ModifiedColorRGB, string fileName)
{
    // Code Here
}

错误

{
   "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"
}

最佳答案

快速修复

JSON 数组不需要用引号引起来。这是有效的 JSON:

{
    "OriginalColorHex": [
        "#000000",
        "#006565",
        "#cccc99"
    ]
}

尝试使用类似 JSONLint 的工具验证您的 JSON以确保它是有效的。 WebMethod 应该能够很好地接受字符串数组。

稍微好一点的方法

与其将 JSON 构建为字符串，不如构建一个对象，然后让 JavaScript 为您处理转换:

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);
    }
});

更简洁、更不易出错且更易于测试。这是一个 fiddle进行演示。

关于javascript - 通过 jQuery AJAX 将字符串数组传递给 C# WebMethod，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29775348/