3
這是我的第一個問題在這裏:)如何在不接收錯誤響應的情況下與ObjectiveC中的服務器進行交互?
我真的需要幫助一些服務器和PHP的東西。這裏的問題:
我有一個NSMutableURLRequest與PHP文件這樣的交互:
NSInteger userID = 4;
NSString * logInString = [NSString stringWithFormat:@"id=%i&mode=HARD", userID];
NSData * logInData = [logInString dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [logInData length]];
NSMutableURLRequest * logInRequest = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://myurl.lol/login.php"]];
[logInRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[logInRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
[logInRequest setHTTPMethod:@"POST"];
[logInRequest setHTTPBody:logInData];
[NSURLConnection sendAsynchronousRequest:logInRequest queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if ([data length] >0 && error == nil) {
NSString * responseString = [NSString stringWithUTF8String:data.bytes];
NSLog(@"%@", responseString);
[self performSelectorOnMainThread:@selector(responseWasReceived:) withObject:responseString waitUntilDone:YES];
}
else if ([data length] == 0 && error == nil) {
[self performSelectorOnMainThread:@selector(didNotReceivedResponse) withObject:nil waitUntilDone:YES];
}
else if (error != nil) {
[self performSelectorOnMainThread:@selector(errorDidOccurred) withObject:nil waitUntilDone:YES];
NSLog(@"Error = %@", error);
}
}];
我的PHP是這樣的:
include("database.php");
if ($_REQUEST['mode'] == 'HARD') {
$query = mysql_query('SELECT COUNT(*) as total FROM users WHERE id = "' . $_REQUEST['id'] . '"');
$fetch_username = mysql_fetch_object($query);
$usernames_coincidences = $fetch_username -> total;
if ($usernames_coincidences == 1) {
exit("ACCESS GRANTED");
} else {
exit("USER DOES NOT EXIST");
}
}
我應該得到「已授權訪問」串,有時會發生,但有時我也會收到像「ACCESS GRANTED」或「ACCESS GRANTEDOL」這樣的不良反應。
有什麼問題?你認爲我應該在方法中使用同步請求,並使用performSelector執行它:inBackground:?