我正在尝试在我的应用程序中运行一个php脚本，该脚本将检查用户的登录变量与数据库中的那些变量。下面的代码是我执行文件的方式。我正在运行脚本，然后将结果存储在数组中。 “是”结果表示用户的登录数据正确，“否”结果表示不正确。
此代码有效，但我的问题是时间。我已经设置了计时器，即使我的php文件是BLANK ，执行第一个块也需要8秒钟。其他一切，甚至加载下一页都要快得多（3秒钟）
//first block
NSString * post = [NSString stringWithFormat:@"userId=%@&password=%@",userId.text,password.text];
NSString * hostStr = @"http://domain.com/check_login.php?";
hostStr = [hostStr stringByAppendingString:post];
NSURL *location = [NSURL URLWithString:hostStr];
NSDictionary *dictionaryData = [[ NSDictionary alloc ] initWithContentsOfURL:location ];
//second block
NSArray *resultArray = [dictionaryData objectForKey:@"result"];
NSArray *loginidArray = [dictionaryData objectForKey:@"loginid"];
NSArray *usernameArray = [dictionaryData objectForKey:@"username"];
同样在第一段代码中，大约有4次中有1次，我收到此错误“SendDelegateMEssage：委托在等待10秒后无法返回。主运行循环模式：_kCFURLConnectionPrivateRunLoopMode”。我一直试图查找它，但根据我的代码，我不知道它意味着什么。当我收到此错误时，代码可能需要30-60秒才能执行!!!
任何方向都会受到赞赏。
谢谢，
阿曼达
编辑以包含PHP，这有助于了解代码中服务器端的情况。
<?php
header('Content-type: text/xml');
session_start();
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE plist SYSTEM \"file://localhost/System/Library/DTDs/PropertyList.dtd\">\n<plist version=\"1.0\">\n";
$username = "user";
$password = "pass";
$host = "localhost";
$database = "database";
// Make the connect to MySQL or die
// and display an error.
$link = mysql_connect($host, $username, $password);
if (!$link) {
die('Could not connect: ' . mysql_error());
error_log("CANT CONNECT DB");
}
else
{
error_log("DB CONNECTED");
}
mysql_select_db ($database);
$userId = $_GET['userId'];
$password = $_GET['password'];
$sql = "SELECT user_login_id,userid from user_login WHERE userId ='". $userId ."' AND password ='".$password."'";
$rs_login = mysql_query($sql, $link) or die (mysql_error());
if(mysql_num_rows($rs_login) ==1)
{
$row = mysql_fetch_array($rs_login );
$user_login_id = $row['user_login_id'];
$user_login_name = $row['userid'];
// The data that needs to be transferred:
$my_data = array();
$my_data["result"] = array("YES");
$my_data["loginid"] = array($user_login_id);
$my_data["username"] = array($user_login_name);
// Open the dictionary
echo "<dict>\n";
// Putting the data into the plist format
foreach ($my_data as $key => $array)
{
// Loop for every value in $my_data
echo " <key>$key</key>\n <array>\n"; // Make a key with the key from $my_data and open an array for it's values.
foreach ($array as $value)
{ // Go through every value in the current array from $my_data
echo " <string>$value</string>\n"; // Print the value as a string in the array
}
echo " </array>\n"; // Close the array
}
echo "</dict>\n</plist>\n"; // Close the dictionary & plist
}
else
{
$my_data["result"] = array("NO");
$my_data["loginid"] = array("--");
$my_data["username"] = array("--");
// Open the dictionary
echo "<dict>\n";
// Putting the data into the plist format
foreach ($my_data as $key => $array)
{
// Loop for every value in $my_data
echo " <key>$key</key>\n <array>\n"; // Make a key with the key from $my_data and open an array for it's values.
foreach ($array as $value)
{ // Go through every value in the current array from $my_data
echo " <string>$value</string>\n"; // Print the value as a string in the array
}
echo " </array>\n"; // Close the array
}
echo "</dict>\n</plist>\n"; // Close the dictionary & plist
}
mysql_free_result($rs_login);
?>
解决方案
这是我的用途，现在登录只需4秒钟...谢谢你们。
NSHTTPURLResponse * response = nil;
NSError* error = nil;
NSString * post = [NSString stringWithFormat:@"userId=%@&password=%@",userId.text,password.text];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL: [NSURL URLWithString:@"http://domainname.com/check_login.php?"]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request
returningResponse:&response
error:&error];
NSString *result = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSString *errorDesc = nil;
NSPropertyListFormat format;
NSDictionary *temp = (NSDictionary *)[NSPropertyListSerialization
propertyListFromData:returnData
mutabilityOption:NSPropertyListMutableContainersAndLeaves
format:&format
errorDescription:&errorDesc];
if (!temp) {
NSLog(@"Error reading plist: %@, format: %d", errorDesc, format);
}
NSArray *resultArray = [temp objectForKey:@"result"];
NSArray *loginidArray = [temp objectForKey:@"loginid"];
NSArray *usernameArray = [temp objectForKey:@"username"];
答案 0 :(得分：1)
NSString* res = nil;
NSHTTPURLResponse * response = nil;
NSError* error = nil;
NSString * post = [NSString stringWithFormat:@"userId=%@&password=%@",userId.text,password.text];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL: [NSURL URLWithString:@"http://domain.com/check_login.php"]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
NSData *returnData = [NSURLConnection sendSynchronousRequest:request
returningResponse:&response
error:&error];
NSString *result = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
我实际上只是对上面的代码做了同样的事情，它花了我不到一秒钟。试一试！
还可以尝试通过浏览器访问 check_login.php ，看看是否需要很长时间才能加载。如果是这样的话，那就是导致问题的PHP文件。如果它立即加载（就像它应该），那就是你的Objective-C代码。