如何使用ios中的ASHTTPRequest将图像和视频发送到服务器

Question

嗨，我是Ios的初学者，在我的项目中，我必须将图像或视频发送到服务器，因为我使用了以下代码，但没有工作，我在这里使用 java是web服务器请帮帮我一个

NSString *strURL = @"enter uerl hear...";

//      ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:strURL]];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:strURL]]; // Upload a file on disk 
NSString *filename1=[NSString stringWithFormat:@"friendship.jpg"]; 
UIImage *image1=[UIImage imageNamed:filename1];
NSData *imageData1=UIImageJPEGRepresentation(image1, 1.0); 
[request setData:imageData1 withFileName:filename1 andContentType:@"image/jpeg" forKey:@"avatar"]; 
[request setRequestMethod:@"POST"];
//[request appendPostData:body]; 
[request setDelegate:self]; 
[request setTimeOutSeconds:3.0]; 
request.shouldAttemptPersistentConnection = NO;
[request setDidFinishSelector:@selector(uploadRequestFinished:)]; 
[request setDidFailSelector:@selector(uploadRequestFailed:)]; 
[request startAsynchronous];


- (void)uploadRequestFinished:(ASIHTTPRequest *)request
{
 NSLog(@" Error - Statistics file upload failed: \"%@\"",[request responseString]); 
}

- (void)uploadRequestFailed:(ASIHTTPRequest *)request{ 
NSLog(@" Error - Statistics file upload failed: \"%@\"",[[request error] localizedDescription]); 

}