我用这个把头撞在墙上。我要选择 UIImage从图书馆并将其上传到服务器，就像可以用 <form action="http://blabla.request.cfm" method="post" enctype="multipart/form-data"> 做的那样.我没有成功，而是收到了这个错误:

error = Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x145e5d90 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

我这样试过:

-(void)uploadPhoto{
NSString *path = @"http://blabla.request.cfm";
NSData *imageData = UIImageJPEGRepresentation(self.imageView.image, 0.9);
int priv = self.isPrivate ? 1 : 0;
NSDictionary *parameters = @{@"username": self.username, @"password" : self.password, @"private" : @(priv), @"photo" : imageData};
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager POST:path parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    if(self.imageView.image){
        [formData appendPartWithFileData:imageData name:@"avatar" fileName:@"avatar.jpg" mimeType:@"image/jpeg"];
    }
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"[UploadVC] success = %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"[UploadVC] error = %@", error);
}];

[self blockView:self.view block:YES];
}

但它不工作...服务器说没有文件。不确定是加密错误、MIME 类型还是什么？

也试过这个:

    [manager POST:path parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"[UploadVC] success = %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"[UploadVC] error = %@", error);
}];

还有这个:

    manager.responseSerializer = [AFJSONResponseSerializer serializer];
[manager POST:path parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFormData:imageData name:@"photo"];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"[UploadVC] success = %@", responseObject);
    [self blockView:self.view block:NO];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"[UploadVC] error response.object = %@", operation.responseObject);
    [self blockView:self.view block:NO];
}];

没有任何效果。希望有人能提供帮助，因为我一直坚持下去，并在 SO 上从一个问题到另一个问题盘旋
蒂亚

编辑:新尝试
1) 首先是多部分形式
2) 创建上传任务
它们都不适合我，所以我仍在努力应对，但看不到任何解决方案

最佳答案

我不确定是哪一部分(我认为缺少一些细节)负责，但我终于做到了 :) 给你:

-(void)uploadPhoto{
    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:@"http://server.url"]];
    NSData *imageData = UIImageJPEGRepresentation(self.avatarView.image, 0.5);
    NSDictionary *parameters = @{@"username": self.username, @"password" : self.password};
    AFHTTPRequestOperation *op = [manager POST:@"rest.of.url" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        //do not put image inside parameters dictionary as I did, but append it!
        [formData appendPartWithFileData:imageData name:paramNameForImage fileName:@"photo.jpg" mimeType:@"image/jpeg"];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"Success: %@ ***** %@", operation.responseString, responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@ ***** %@", operation.responseString, error);
    }];
    [op start];
}

工作起来很有魅力:)

关于ios - 使用 AFNetworking 2.0 上传图像，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19836432/