我有一个通过网络从API加载JSON的应用程序。在通常的数据集下，它可以正常工作，我在返回之前的调试代码将打印我的JSON内容。但是，对于一个特定的数据集，JSON内容为空，我无法弄清楚原因。以下是我的网络课程的相关代码，以及它令人窒息的数据集。
// prepare the NSURL and other request parts
let requestUrl = NSURL(string:escapedUrlString!)
let req = NSURLRequest(URL: requestUrl!)
let res:AutoreleasingUnsafeMutablePointer<NSURLResponse?> = nil
// send the request; get a response
let responseData = try? NSURLConnection.sendSynchronousRequest(req, returningResponse: res) as NSData!
let finalResponseJSON = JSON(data: responseData!)
print(finalResponseJSON)
return finalResponseJSON
JSON：
{
"success": true,
"message": "",
"displayname": "",
"username": "",
"avaurl": "",
"location": "",
"bio": "",
"followers": 0,
"following": 0,
"blocked": false,
"statusid": 0,
"statuses": [
{
"id": 2356,
"username": "grogov",
"success": true,
"failmessage": "",
"author": "grogov",
"authoravatar": "http://i.imgur.com/0gaAKHB.jpg",
"content": "'Snowboarding with the NYPD': YouTube filmmakers use NYC blizzard kills 24, Washington struggles to rebound",
"group": "Public",
"time": "2016-01-25T00:38:00.053"
},
{
"id": 2355,
"username": "grogov",
"success": true,
"failmessage": "",
"author": "grogov",
"authoravatar": "http://i.imgur.com/0gaAKHB.jpg",
"content": "It’s not just Flint residents still paying bills for viral video",
"group": "Public",
"time": "2016-01-24T21:33:50.25"
},
{
"id": 2354,
"username": "grogov",
"success": true,
"failmessage": "",
"author": "grogov",
"authoravatar": "http://i.imgur.com/0gaAKHB.jpg",
"content": "Amid confusion, officials clarify ID 'request' in Flint residents still paying bills for viral video",
"group": "Public",
"time": "2016-01-24T21:30:14.237"
},
{
"id": 2353,
"username": "grogov",
"success": true,
"failmessage": "",
"author": "grogov",
"authoravatar": "http://i.imgur.com/0gaAKHB.jpg",
"content": "Flint residents still paying bills for viral video",
"group": "Public",
"time": "2016-01-24T21:26:25.47"
},
{
"id": 2352,
"username": "grogov",
"success": true,
"failmessage": "",
"author": "grogov",
"authoravatar": "http://i.imgur.com/0gaAKHB.jpg",
"content": "'Snowboarding with the NYPD': YouTube filmmakers use NYC blizzard shutdown for contaminated water",
"group": "Public",
"time": "2016-01-24T21:26:07.97"
}
],
"users": null,
"groups": null,
"trends": null
}