NSData *urlDatat = [NSData dataWithContentsOfURL: [NSURL URLWithString:stringURL]];
NSDictionary* json1 = [NSJSONSerialization JSONObjectWithData:urlDatat options:0 error:&error];
NSString *urlDataString =[[NSString alloc] initWithData:urlDatat encoding:NSUTF8StringEncoding];
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:urlDatat options:NSJSONReadingMutableContainers|NSJSONReadingAllowFragments|NSJSONReadingMutableLeaves error:&error];
json1
和json
返回null。從服務器的實際JSON數據={"statusCode":"1","message":"success","utcMilliSeconds":"1501953923847"}
Xcode NSData返回null
有沒有在'error'參數的任何輸出? – vadian
使用'error'參數。另外,是'urlDatat'零? – Larme
您如何知道「來自服務器的實際JSON數據」?你打印了嗎?你打印了urlDataString嗎?或者你是否在瀏覽器中輸入了URL,並假設你會得到? – gnasher729