Question

到目前为止，我使用此方法将strings发送到服务器：

NSString *reqURL = [NSString stringWithFormat:];
reqURL = [reqURL stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:reqURL]];
NSURLResponse *resp = nil;
NSError *err = nil;
[NSURLConnection sendSynchronousRequest: theRequest returningResponse: &resp error: &err];

我想知道是否有可能向服务器发送UIImage。

Answer 1

如果您的图片为png，请使用UIImagePNGRepresentation在NSData中获取该图片。

NSData *data = UIImagePNGRepresentation(myUIImage);

如果您的图片为jpg或jpeg，请使用UIImageJPEGRepresentation在NSData中获取该图片。

NSData *data = UIImageJPEGRepresentation(myUIImage);

签入Documentation

检查以下SO帖子，将NSData UIImage发送到服务器。

Sending an image data(NSData) to the server

Answer 2

你可以试试这个： -

    NSData *imagedata=[NSData dataWithData:UIImagePNGRepresentation(self.editedImage)]; 
    NSString *base64string=[imagedata base64EncodedString];
    NSString *str = [NSString stringWithFormat:@"%@/uploadBlogData.php",appUrl];
    NSURL *url = [NSURL URLWithString:[str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
    ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
    [request setPostValue:base64string forKey:@"imagedata"];
    [request setRequestMethod:@"POST"];
    [request setDelegate:self];
    [request startSynchronous];

        NSLog(@"responseStatusCode %i",[request responseStatusCode]);
    NSLog(@"responseStatusString %@",[request responseString]);

这段代码到底是做什么的，我已将我的图像转换为NSData，然后再以base 64字符串编码。你也可以这样做。

Answer 3

使用ASIHTTPRequest

并执行此操作：

    -(void)uploadImage{
        ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];

        // Upload a file on disk
        [request setFile:@"/Users/ben/Desktop/ben.jpg" withFileName:@"myphoto.jpg" andContentType:@"image/jpeg"
    forKey:@"photo"];

       // Upload an NSData instance
      [request setData:UIImageJPEGRepresentation(myUIImage) withFileName:@"myphoto.jpg" andContentType:@"image/jpeg" forKey:@"photo"];

      [request setDelegate:self];
      [request setDidFinishSelector:@selector(uploadRequestFinished:)];
      [request setDidFailSelector:@selector(uploadRequestFailed:)];

      [request startAsynchronous];
}

将uiimage发送到服务器

3 个答案: