asi上传图片

UIImage *image = [info
objectForKey:@"UIImagePickerControllerEditedImage"];
NSString *documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES)
objectAtIndex:0];
documentPath = [documentPath stringByAppendingPathComponent:@"image.png"];

NSData *data =
UIImagePNGRepresentation(image);//
[data writeToFile:documentPath
atomically:YES];

ASIFormDataRequest *request = [ASIFormDataRequestrequestWithURL:[NSURLURLWithString:@"http://txxxxxxxxxxx"]];

request.requestMethod =
@"POST";//设置请求方式
[request addPostValue:[[NSUserDefaultsstandardUserDefaults]
objectForKey:@"True_userid"]forKey:@"userid"];
[request addFile:documentPath
forKey:@"photo"];

[request setCompletionBlock:^{
NSLog(@"------草泥马%@",request.responseString);
}];

[request setFailedBlock:^{
NSLog(@"asi error: %@",request.error.debugDescription);
}];

[request startAsynchronous];

反反复复，成功上传了，真是草泥马