使用ASIFormDataRequest将图像上传到服务器 [英] Uploading image to server with ASIFormDataRequest

问题描述

您好为我的iPhone应用程序构建服务，并且需要具有从用户获取图像的功能:直到现在，我一直只使用这种方法获取文本:

Hi build a service for my iPhone app and need to have function that get image from the user: Until now i used to get only text with this method:

string input = null;

using (StreamReader sr = new StreamReader(Request.InputStream))
{
      input = sr.ReadToEnd();
}

我应该如何从帖子中获取图片?

How should i get the image from the post?

这是我从iphone应用发送图像的方式:

This is how i send the image from the iphone app:

imageRequest = [ASIFormDataRequest requestWithURL:url];
[imageRequest addData:imageData withFileName:@"someFileName.jpeg" andContentType:@"image/jpeg" forKey:@"uploadedImage"];
[imageRequest setDelegate:self];
[imageRequest setRequestMethod:@"POST"];
[imageRequest startAsynchronous];

推荐答案

您无法通过添加具有名称的图像来上传图像.首先将UIImage对象转换为Base64Encoding字符串，然后将该字符串发送到服务器.

You cannot upload image by adding image with name. First convert UIImage object into Base64Encoding string and then send that string to server.

从链接在此处输入链接描述

以及使用这些方法

- (NSString*) stringFromImage:(UIImage*)image
{
    if(image){
        NSData *dataObj = UIImagePNGRepresentation(image);
        return [dataObj base64Encoding];
    } else {
        return @"";
    }
}

- (UIImage*) imageFromString:(NSString*)imageString
{
    NSData* imageData =[NSData dataWithBase64EncodedString:imageString];
    return [UIImage imageWithData: imageData];

}

还要在Base64中检查此链接以获取图像到字符串和字符串至图像

Also check this link for Image to string and string to image in Base64 image conversion

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