使用Json / jquery将DataURl发送到webservice [英] Send DataURl to webservice using Json/jquery

问题描述

我正在尝试将Base64数据保存到数据库中。

但是我无法将dataUrl发送到我的.asmx文件。



Jquery

Hi,
I am trying to save Base64 data in to database.
But I am not able to send dataUrl to my .asmx file.

Jquery

function UploadUserPhoto() {                
    var Mycanvas = document.getElementById("tempCanvas");
    var dataURL = Mycanvas.toDataURL("image/png");               
                
    $.ajax({
        url: "LP18WS.asmx/UploadPhoto",
        contentType: "application/json; charset=utf-8",
        data: {
            Base64String: "\'" + dataURL + "\'"
        },
        dataType: "json",
        success: function (msg) {
            alert(msg.d);
        },
        error: function (msg) {
            alert(msg + '\n' + xhr.responseText);
        },
    });
}

Webservice（LP18WS.asmx）

Webservice (LP18WS.asmx)

[WebMethod(EnableSession = true)]
[ScriptMethod(ResponseFormat = ResponseFormat.Json,  UseHttpGet = true)]
public string UploadPhoto(string Base64String)
{
   string message = "";
    //code to save data url in database            
   return message;
}

但它没有发送dataurl。如果我把一些其他的字符串而不是dataurl它正在工作。

为什么这个数据不能发送？任何人都能指导我吗？



我观察到当dataURL中有大量数据时会发生这种情况。否则，当数据量最小时，它正在工作。你能给我一个解决方案来克服这种情况。

But it is not sending the dataurl. If I put some other string instead of dataurl it is working.
Why this dataurl can''t send?. Can any one guid me?

I have observed that it is happening when there are large amount of data within dataURL. Otherwise when the amount of data is minimum it is working. Can you give me a solution to overcome this situation.

推荐答案

.ajax（{
url： LP18WS.asmx / UploadPhoto，
contentType： application / json; charset = utf-8，
data：{
Base64String： \' + dataURL + \'
}，
dataType： json，
成功： function （msg）{
alert（msg.d）;
}，
错误： function （msg）{
alert（msg + ' \ n' + xhr.responseText）;
}，
}）;
}

.ajax({ url: "LP18WS.asmx/UploadPhoto", contentType: "application/json; charset=utf-8", data: { Base64String: "\'" + dataURL + "\'" }, dataType: "json", success: function (msg) { alert(msg.d); }, error: function (msg) { alert(msg + '\n' + xhr.responseText); }, }); }

Webservice（LP18WS.asmx）

Webservice (LP18WS.asmx)

[WebMethod(EnableSession = true)]
[ScriptMethod(ResponseFormat = ResponseFormat.Json,  UseHttpGet = true)]
public string UploadPhoto(string Base64String)
{
   string message = "";
    //code to save data url in database            
   return message;
}

但它没有发送dataurl。如果我把一些其他的字符串而不是dataurl它正在工作。

为什么这个数据不能发送？任何人都能指导我吗？



我观察到当dataURL中有大量数据时会发生这种情况。否则，当数据量最小时，它正在工作。你能给我一个解决方案来克服这种情况。

But it is not sending the dataurl. If I put some other string instead of dataurl it is working.
Why this dataurl can''t send?. Can any one guid me?

I have observed that it is happening when there are large amount of data within dataURL. Otherwise when the amount of data is minimum it is working. Can you give me a solution to overcome this situation.

这篇关于使用Json / jquery将DataURl发送到webservice的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！