I'm parsing JSON in my app via PHP, my messaging center was working fine but now it just stopped working. I'm using Swift 5, PHP and MySQL.
When I attempt to view the page in the app, I get a JSON error saying,
'The data cannot be read because it is not in the right format'.
Other pages using the same code are not having this problem.
I've tried different attributes to JSONSerialization but nothing has worked.
Swift 5 code to load messages from php
func loadMessages() {
let username = user!["username"] as! String
let url = URL(string: "https://www.xxxx.com/messagecenter.php")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
let body = "username=\(username)"
request.httpBody = body.data(using: String.Encoding.utf8)
URLSession.shared.dataTask(with: request) { data, response, error in
DispatchQueue.main.async(execute: {
if error == nil {
do {
let json : NSDictionary? = try JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? NSDictionary
self.tableView.reloadData()
guard let parseJSON = json else {
print("Error while parsing")
return
}
guard let messages = parseJSON["messages"] as? [AnyObject] else {
print("Error while parseJSONing")
return
}
self.hhmessages = messages
for i in 0 ..< self.hhmessages.count {
let path = self.hhmessages[i]["ava"] as? String
if !path!.isEmpty {
let url = URL(string: path!)!
let imageData = try? Data(contentsOf: url)
let image = UIImage(data: imageData!)!
self.avas.append(image) // append found image to [images] var
} else {
let image = UIImage()
self.avas.append(image)
}
}
self.tableView.reloadData()
} catch {
Helper().showAlert(title: "JSON Error", message: error.localizedDescription, in: self)
return
}
} else {
}
})
}.resume()
}
PHP Code
$access->connect();
$returnArray = array();
if (!empty($_REQUEST["uuid"]) && empty($_REQUEST["id"])) {
// STEP 2.1 Get uuid of post and path to post picture passed to this php file via swift POST
$uuid = htmlentities($_REQUEST["uuid"]);
//$path = htmlentities($_REQUEST["path"]);
// STEP 2.2 Delete post according to uuid
$result = $access->deleteMessage($uuid);
if (!empty($result)) {
$returnArray["message"] = "Successfully deleted";
$returnArray["result"] = $result;
} else {
$returnArray["message"] = "Could not delete post";
}
}
else {
// STEP 2.1 Pass POST / GET via html encrypt and assign passed id of user to $id var
$username = htmlentities($_REQUEST["username"]);
// STEP 2.2 Select posts + user related to $id
$messages = $access->messageCenter($username);
// STEP 2.3 If posts are found, append them to $returnArray
if ($messages) {
$returnArray['messages'] = $messages;
}
}
// STEP 3. Close connection
$access->disconnect();
// STEP 4. Feedback information
echo json_encode($returnArray);
?>
The code should display the inbox for the user.
print(data! as NSData)beforelet json : ...and see what's printed."<!DOCTYPE ht", which may be the first part of the error page. Change theprinttoprint(String(data: data!, encoding: .utf8))and find what sort of error is happening from the HTML.