Export_ex'需要& # 39;1 & # 39;在asp.net c#中调用web服务时出现参数错误

本文关键字：服务 web 调用 错误 参数 asp ex 需要 net Export | 更新日期: 2023-09-27 18:01:47

我在asp .net c#中编写了一个web服务，当我从java脚本调用它时，我得到错误的方法'Export_ex'在调用web服务时需要'1'参数。

这里是javascript代码

function myF() {
        var data = demo.innerHTML;
        $.ajax({
            type: "POST",
            url: "WebService.asmx/Export_ex",
            data: JSON.stringify(data),
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function(response) {
            var show = response.d;
                alert(show);
               // alert("success");

            },
            failure: function(msg) {
                alert("Error occur, could not load the service.");
            }
        });
    }
这是我的webservice方法 
[WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
        public void Export_ex(string elem)
        {
            string elements = "elem";
            HttpContext.Current.Response.ContentType = "data:application/vnd.ms-excel";
            HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename=Print.xls");
            HttpContext.Current.Response.Write("<html xmlns:x='"urn:schemas-microsoft-com:office:excel'">");
            HttpContext.Current.Response.Write("<head>");
            HttpContext.Current.Response.Write("<div>");
            HttpContext.Current.Response.Write("<META http-equiv='"Content-Type'" content='"text/html; charset=utf-     8'">");
            HttpContext.Current.Response.Write("<!--[if gte mso 9]><xml>");
            HttpContext.Current.Response.Write("<x:ExcelWorkbook>");
            HttpContext.Current.Response.Write("<x:ExcelWorksheets>");
            HttpContext.Current.Response.Write("<x:ExcelWorksheet>");
            HttpContext.Current.Response.Write("<x:Name>Report Data</x:Name>");
            HttpContext.Current.Response.Write("<x:WorksheetOptions>");
            HttpContext.Current.Response.Write("<x:ValidPrinterInfo/>");
            HttpContext.Current.Response.Write("</x:Print>");
            HttpContext.Current.Response.Write("</x:WorksheetOptions>");
            HttpContext.Current.Response.Write("</x:ExcelWorksheet>");
            HttpContext.Current.Response.Write("</x:ExcelWorksheets>");
            HttpContext.Current.Response.Write("</x:ExcelWorkbook>");
            HttpContext.Current.Response.Write("</xml>");
            HttpContext.Current.Response.Write("<![endif]--> ");
            HttpContext.Current.Response.Write("</head>");
            HttpContext.Current.Response.Write(elements);
            HttpContext.Current.Response.End(); ;
        }

有人能帮忙吗?

Export_ex'需要& # 39;1 & # 39;在asp.net c#中调用web服务时出现参数错误

您不应该将您的数据stringify。(一路上会连载):

data: JSON.stringify(data),
应:

data : data
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