- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    [self request];

}

- (void)saveImage

{

    NSData *imageData = 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 = ;

    //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 = ; 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];

}