ios - AFNetworking (iOS) - 响应不是 NSDictionary

Question

我知道我的请求格式正确，但我从 Web 服务获得的响应不是 NSDictionary。

为什么它不是 NSDictionary？

如何判断“responseObject”是什么类型的对象？

AFHTTPRequestOperation *operation = [[AFParseAPIClient sharedClient]  HTTPRequestOperationWithRequest:request success:^(AFHTTPRequestOperation *operation, id responseObject) {
    if ([responseObject isKindOfClass:[NSDictionary class]]) {
        NSLog(@"Response for %@: %@", className, responseObject);
        [self writeJSONResponse:responseObject toDiskForClassWithName:className];
    }else{
        //NSLog(@"Response NOT NSDictionary: %@", [responseObject class]);
        NSString *str = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
        NSLog(@"str: %@", str);
    }
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Request for class %@ failed with error: %@", className, error);
}];

这是我得到的：

//Response NOT NSDictionary: <7b227265 73756c74 73223a5b 7b22636f ...>

编辑：这是我回来的：

str: {"results":[{"desc":"My description.","device_iPad":true,"device_iPhone":true,"createdAt":"2012-09-05T18:36:11.431Z","updatedAt":"2012-09-05T22:00:52.199Z"}]}

score 4 · Accepted Answer

只需在创建操作后添加这行代码

operation.responseSerializer = [AFJSONResponseSerializer 序列化器];

score 2 · Accepted Answer

我遇到了同样的问题，但使用 AFHTTPClient 的子类执行请求。我得到的是 __NSCFData 而不是 __NSCFDictionary。我用这个解决了它：

[self setDefaultHeader:@"Accept" value:@"application/json"];

self 是我的 AFHTTPClient 子类。

score 1 · Accepted Answer

这对你有用吗？它来自 AFNetworking github项目

NSURL *url = [NSURL URLWithString:@"https://gowalla.com/users/mattt.json"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];

AFJSONRequestOperation *operation = [AFJSONRequestOperationJSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
NSLog(@"Name: %@ %@", [JSON valueForKeyPath:@"first_name"], [JSON valueForKeyPath:@"last_name"]);
} failure:nil];

[operation start];

试一试，很简单。*如果它仍然是一个数组做[[JSON objectAtIndex:0] objectForKey@"desc /*(or whatever)*/"]

score 0 · Accepted Answer

使用 AFJSONRequestOperation 和 AFNetworking 返回 JSON 响应。使用 AFHTTPRequestOperation 返回 NSData ，您可以将其转换（转换）为 NSDictionary 并使用以下命令进行打印：

NSLog(@"响应：%@", [[NSString alloc] initWithData:(NSData *)json encoding:NSUTF8StringEncoding]);

我的建议是只使用 AFJSONRequestOperation！

ios - AFNetworking (iOS) - 响应不是 NSDictionary

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