Question

您好我是ios的新手，我正在尝试使用NSURLSession向服务器发送一些参数（它们是USERname，USERtype，USERimage）但基于我的下面的代码图像不是去服务器和如何发送图像到服务器，请帮助我在哪里做错了吗？

我的代码： -

    NSError *error;

    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil];
    NSURL *url = [NSURL URLWithString:@"[JSON SERVER"];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                           cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                       timeoutInterval:60.0];

    [request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    [request addValue:@"application/json" forHTTPHeaderField:@"Accept"];

    [request setHTTPMethod:@"POST"];

   UIImage *myImage = [UIImage imageNamed:@"myImage.png"];
NSString *myImage = [UIImagePNGRepresentation(myImage) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

    NSDictionary *mapData = [[NSDictionary alloc] initWithObjectsAndKeys: @"TEST IOS", @"name",
                         @"IOS TYPE", @"typemap",
                         myImage,@"image"
                         nil];
    NSData *postData = [NSJSONSerialization dataWithJSONObject:mapData options:0 error:&error];
    [request setHTTPBody:postData];


    NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

    }];

    [postDataTask resume];

Answer 1

尝试使用

UIImage *myImage = [UIImage imageNamed:@"myImage.png"];
NSString *base64Image = [UIImagePNGRepresentation(myImage) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

Answer 2

您可以使用AFNetworking库上传图片。效率更高。

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html", @"application/json", nil];
    [manager.requestSerializer setValue:[CommonFunctions hmac:sStr withKey:[[NSUserDefaults standardUserDefaults] objectForKey:KEY_ACCESS_TOKEN]] forHTTPHeaderField:@"Signature"];
    manager.responseSerializer = [AFJSONResponseSerializer serializer];

    [manager POST:[NSString stringWithFormat:@"%@%@",kBaseURL,theFileName] parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData)
     {
         if (finalImageData)
         {
             [formData appendPartWithFileData:finalImageData name:@"photo" fileName:@"pic.jpg"  mimeType:@"image/jpeg" ];
         }
     } success:^(AFHTTPRequestOperation *operation, id responseObject) {
         NSLog(@"JSON: %@", responseObject);




     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

}

使用NSURLSession将图像发送到服务器

我的代码： -

2 个答案: