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EDIT: I have edited the OP with all the suggestions I got from people, so this is the latest (and its still not working).
I have the following code, which is supposed to POST some data to a .php file I have (and then to a database but that is beyond the scope of this question).
To my method, I pass an array that contains some strings.
-(void)JSON:(NSArray *)arrayData {
//parse out the json data
NSError *error;
//convert array object to data
NSData* JSONData = [NSJSONSerialization dataWithJSONObject:arrayData
options:NSJSONWritingPrettyPrinted
error:&error];
NSString *JSONString = [[NSString alloc] initWithData:JSONData
encoding:NSUTF8StringEncoding];
NSString *URLString = [NSString stringWithFormat:@"websitename"];
NSURL *URL = [NSURL URLWithString:URLString];
NSLog(@"URL: %@", URL);
NSMutableURLRequest *URLRequest = [NSMutableURLRequest requestWithURL:URL
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
NSData *requestData = [NSData dataWithBytes:[JSONString UTF8String] length:[JSONString length]];
NSString *requestDataString = [[NSString alloc] initWithData:requestData
encoding:NSUTF8StringEncoding];
NSLog(@"requestData: %@", requestDataString);
[URLRequest setHTTPMethod:@"POST"];
NSLog(@"method: %@", URLRequest.HTTPMethod);
[URLRequest setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[URLRequest setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[URLRequest setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"];
[URLRequest setHTTPBody: requestData];
NSURLConnection *connection = [[NSURLConnection alloc]initWithRequest:URLRequest delegate:self];
if (connection) {
NSMutableData *receivedData = [[NSMutableData data] retain];
NSString *receivedDataString = [[NSString alloc] initWithData:receivedData
encoding:NSUTF8StringEncoding];
NSLog(@"receivedData: %@", receivedDataString);
}
//potential response
NSData *response = [NSURLConnection sendSynchronousRequest:URLRequest returningResponse:nil error:nil];
//convert response so that it can be LOG'd
NSString *returnString = [[NSString alloc] initWithData:response encoding:NSASCIIStringEncoding];
NSLog(@"RETURN STRING: %@", returnString);
}
NOTE: I have the actual URL of my website in the code, so that anyone can test if they want to.
Then there is the .php side of things, where all I am trying to do is look for any input at all (but I am getting nothing).
<html>
<body>
<?php
echo "Connection from iOS app to MySQL database<BR>";
echo '<pre>'.print_r($GLOBALS,true).'</pre>';
?>
</body>
</html>
All I am really trying to do right now is confirm the data is getting through, by echoing it to the page, and then reading the page from my app (so far the data hasn't been showing up).
The output of the .php:
<html>
<body>
Connection from iOS app to MySQL database<BR>'Array
(
)
'<pre>Array
(
[_GET] => Array
(
)
[_POST] => Array
(
)
[_COOKIE] => Array
(
)
[_FILES] => Array
(
)
[GLOBALS] => Array
*RECURSION*
)
</pre> </body>
</html>
763
You are POSTing JSON instead of application/x-www-form-urlencoded.
The PHP $_POST is only filled for application/x-www-form-urlencoded-requests. If you are sending json directly like that, then you should do:
<?php
$posted_json = json_decode(file_get_contents("php://input"));
print_r($posted_json);
Note that if the json is invalid this won't work. You can always debug the request body with:
<?php
echo file_get_contents("php://input");
Here's general explanation of $_POST and $_GET http://www.php.net/manual/en/language.variables.external.php:
They are meant to be used with normal html forms, though you can easily emulate such requests with appropriate encoding and content type header. But they won't work with JSON as that's not how normal html forms work.
193
I have no idea about Objective-C, bu assuming you are trying to send following JSON data (i.e. JSONString is the following):
{
"firstName": "John",
"lastName": "Smith",
"age": 25,
"address": {
"streetAddress": "21 2nd Street",
"city": "New York",
"state": "NY",
"postalCode": "10021"
},
"phoneNumber": [
{
"type": "home",
"number": "212 555-1234"
},
{
"type": "fax",
"number": "646 555-4567"
}
]
}
then your request should be something like this:
POST /yourwebsite.php HTTP/1.1
Host: cs.dal.ca
User-Agent: USER-AGENT
Accept: text/html,application/json,*/*
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 624
data=%7B%0A++++%22firstName%22%3A+%22John%22%2C%0A++++%22lastName%22%3A+%22Smith%22%2C%0A++++%22age%22%3A+25%2C%0A++++%22address%22%3A+%7B%0A++++++++%22streetAddress%22%3A+%2221+2nd+Street%22%2C%0A++++++++%22city%22%3A+%22New+York%22%2C%0A++++++++%22state%22%3A+%22NY%22%2C%0A++++++++%22postalCode%22%3A+%2210021%22%0A++++%7D%2C%0A++++%22phoneNumber%22%3A+%5B%0A++++++++%7B%0A++++++++++++%22type%22%3A+%22home%22%2C%0A++++++++++++%22number%22%3A+%22212+555-1234%22%0A++++++++%7D%2C%0A++++++++%7B%0A++++++++++++%22type%22%3A+%22fax%22%2C%0A++++++++++++%22number%22%3A+%22646+555-4567%22%0A++++++++%7D%0A++++%5D%0A%7D%0A%0A%0A
note that Content-Type: application/json is NOT a way for posting data, as you have used, and note that data has been urlencoded, it should not be hard to this, I found this link about doing so in Objective-C: URLEncoding a string with Objective-C
Sending above request, I got this:
php code:
<?php
$raw_json_data = $_POST['data'];
$json_data = json_decode($raw_json_data);
print_r($json_data);
result:
stdClass Object
(
[firstName] => John
[lastName] => Smith
[age] => 25
[address] => stdClass Object
(
[streetAddress] => 21 2nd Street
[city] => New York
[state] => NY
[postalCode] => 10021
)
[phoneNumber] => Array
(
[0] => stdClass Object
(
[type] => home
[number] => 212 555-1234
)
[1] => stdClass Object
(
[type] => fax
[number] => 646 555-4567
)
)
)
which is what you want!
NOTE: I should mention that your script at http://yourwebsite.php does not work properly, I could not even submit a normal form to it! There might be a problem like server misconfiguration or something similar, but using Apache 2.2 and PHP 5.4.4 and codes mentioned above, I got it working!
33
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