Ios 如何将UIImage或NSData转换为字节数组并发布到服务器？

如何将

UIImage

或

NSDate

转换为字节数组并发布到服务器。 在我的应用程序中，我必须将

UIImage

转换为字节数组，然后发布

对于post，我使用as

ASIFormDataRequest

我的代码是：

NSUInteger len = [self.dataImage length];
 Byte *byteData= (Byte*)malloc(len);  //converting date to byte array
 [self.dataImage  getBytes:byteData length:len];


 ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:urlStr]];
  [request setRequestMethod:@"POST"];


 [request addData:self.dataImage withFileName:@"Image.png" andContentType:@"image/png" forKey:@"photo"];
 [request setDelegate:self];
 [request startAsynchronous];

试着这样,

    NSData *imageData = UIImagePNGRepresentation(self.dataImage ,0.1);
 ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:urlStr]];
  [request setRequestMethod:@"POST"];


 [request addData:imageData withFileName:@"Image.png" andContentType:@"image/png" forKey:@"photo"];
 [request setDelegate:self];
 [request startAsynchronous];

---

我用替换的方法解决了这个问题

         [request addData:imageData withFileName:@"Image.png" andContentType:@"image/png" forKey:@"photo"];

与

可能重复的

       [request appendPostData:self.dataImage];