- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        [self request];}- (void)saveImage{    NSData *imageData = http://www.mamicode.com/UIImageJPEGRepresentation(image, 1.0);    [imageData writeToFile:[self GetTempPath] atomically:YES];}-(NSString *)GetTempPath{    NSString *tempPath =[NSString stringWithFormat:@"%@/upload.jpg",NSTemporaryDirectory()];    return tempPath;}- (void)request{    NSDictionary *postDic = [[NSDictionary alloc]init];    [postDic setValue:@"test" forKey:@"userId"];    [postDic setValue:[self GetTempPath] forKey:@"file"];        [self uploadImage:postDic];}- (void)uploadImage:(NSDictionary *)dic{    ASIFormDataRequest *request = [[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:postUrl]];        // 通常数据是以’application/x-www-form-urlencoded’格式发送的，如果上传了二进制数据或者文件，那么格式将自动变为‘multipart/form-data’注意要和服务器统一。    [request addRequestHeader:@"Content-Type" value:@"multipart/form-data"];    //超时时间    request.timeOutSeconds = 30;        //定义异步方法    [request setDelegate:self];    [request setRequestMethod:@"POST"];    [request setDidFailSelector:@selector(commonRequestDidFailed:)];    [request setDidFinishSelector:@selector(commonRequestDidSuccess:)];        //post的数据    id key, value;    for (int i = 0; i < [dic allKeys].count; i++)    {                key = [keys objectAtIndex: i];        value = [params objectForKey: key];        NSLog (@"Key: %@ for value: %@", key, value);                if ([key isEqualToString:@"file"]) {            [request setFile:value forKey:key];            [request setShouldStreamPostDataFromDisk:YES];        }        else        {            [request setPostValue:value forKey:key];        }            }         [request startSynchronous];}