Question

我试图通过afnetworking将相机拍摄的照片上传到网络服务。

这是我的上传部分代码：

CGSize newSize = CGSizeMake(500.0f, 500.0f);
UIGraphicsBeginImageContext(newSize);
[_imagedata drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imgData = UIImageJPEGRepresentation(newImage, 0.9f);

    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    NSDictionary *parameters = @{@"user": "test_user"};
    [manager POST:@"http://www.mywebsite.com/webservice.aspx" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        manager.responseSerializer = [AFHTTPResponseSerializer serializer];
        [formData appendPartWithFormData:imgData name:@"image"];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"Success: %@", responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];

我使用Asp.net作为我的网络服务。

这是我的服务器端代码：

    string USER = Server.UrlDecode(Request["user"]),
    SqlParameter prmUser = sc.Parameters.Add("@user", SqlDbType.VarChar);
    prmUser.Direction = ParameterDirection.Input;
    prmUser.Value = USER;


    HttpFileCollection MyFileCollection = Request.Files;
    if (MyFileCollection != null && MyFileCollection.Count > 0 && MyFileCollection[0] != null)
    {
        SqlParameter prmImage = sc.Parameters.Add("@Image", SqlDbType.Image);
        prmImage.Direction = ParameterDirection.Input;
        byte[] buf = new byte[MyFileCollection[0].ContentLength];
        MyFileCollection[0].InputStream.Read(buf, 0, MyFileCollection[0].ContentLength);
        prmPhoto.Value = buf;

    }
sc.ExecuteNonQuery();

现在我每次运行程序都会出现此错误：

Error: Error Domain=com.alamofire.error.serialization.response Code=-1011 "Request failed: internal server error (500)" UserInfo=0x1555ff60 {com.alamofire.serialization.response.error.response=<NSHTTPURLResponse: 0x16a94010> { URL: http://www.mywebsite.com/webservice.aspx } { status code: 500, headers {
    Connection = close;
    "Content-Length" = 3420;
    "Content-Type" = "text/html; charset=utf-8";
    Date = "Wed, 01 Apr 2015 15:56:21 GMT";
    Server = "Microsoft-IIS/8.5";
    Via = "1.1 magellan-front (squid/3.5.1)";
    "X-AspNet-Version" = "4.0.30319";
    "X-Cache" = "MISS from magellan-front";
    "X-Powered-By" = "ASP.NET";
} }, NSErrorFailingURLKey=http://www.mywebsite.com/webservice.aspx, NSLocalizedDescription=Request failed: internal server error (500),

详细错误：

[HttpRequestValidationException (0x80004005): A potentially dangerous Request.Form value was detected from the client (image=&quot;...�5�Ƨ&amp;�����&lt;I
�(�ep��K�,�=mp�...&quot;).]

web服务也适用于android HttpFileUpload 方法。

Answer 1

我试图找到这个的基础知识，这里是link

您的代码似乎是客户端似乎有问题。为什么不尝试使用appendPartWithFileURL:name:fileName:mimeType:error:，并说如果不起作用则问题必须来自服务器端。

我对ASP.NET知之甚少，但您能否验证一下您尝试读取文件的方式。这是link我发现了一些你可能想尝试实现的有趣内容。

HttpFileCollection上的枚举器返回文件的键（名称），而不是HttpPostedFileBase个对象。获得密钥后，使用带有密钥（文件名）的Item（[]）属性来获取HttpPostedFileBase对象。

foreach (string fileName in Request.Files)
{
    HttpPostedFileBase file = Request.Files[fileName];

    ...
}

如果这不起作用，请告诉我。

Answer 2

尝试将图片上传为文件（appendPartWithFileData）而不是表单数据（appendPartWithFormData），并设置内容类型：

[formData appendPartWithFileData:imgData name:@"image"
    fileName:@"image.jpg" mimeType:@"image/jpeg"];

另见https://stackoverflow.com/a/15413152/1469259

AFHTTPRequestOperationManager文件上传返回500服务器错误

2 个答案: