Using NSURLRequest to pass key-value pairs to PHP script with POST
Solution 1
Thanks for the suggestions everyone. In the end i managed to solve the issue by using stuff given here.
Code:
NSString *myRequestString = @"sender=my%20sender&rcpt=my%20rcpt&message=hello";
NSData *myRequestData = [ NSData dataWithBytes: [ myRequestString UTF8String ] length: [ myRequestString length ] ];
NSMutableURLRequest *request = [ [ NSMutableURLRequest alloc ] initWithURL: [ NSURL URLWithString: @"http://people.bath.ac.uk/trs22/insert.php" ] ];
[ request setHTTPMethod: @"POST" ];
[ request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content-type"];
[ request setHTTPBody: myRequestData ];
NSURLResponse *response;
NSError *err;
NSData *returnData = [ NSURLConnection sendSynchronousRequest: request returningResponse:&response error:&err];
NSString *content = [NSString stringWithUTF8String:[returnData bytes]];
NSLog(@"responseData: %@", content);
Solution 2
This is wrong:
[NSData dataWithBytes:[post UTF8String] length:[post length]]
The length should be expressed in bytes not in count of UTF8 characters. Instead of this line you should use:
NSData *data = [post dataUsingEncoding: NSUTF8StringEncoding];
Solution 3
This line [request setHTTPBody:[NSData dataWithBytes:data length:[data count]]];
looks way wrong to me.
I think you want: [request setAllHTTPHeaderFields:data];
Secondly, you will find the Cocoa framework capitalizes the first letter of your field names before sending them (annoyingly). You might have to make some changes to cope with that.
Solution 4
If you are going to do a lot of form posting, I'd recommend skipping NSURLRequest and using ASIHTTPRequest instead. IMHO, it's well documented and offers an straightforward way to interact with webservices.
Solution 5
This is working on IOS 5.o for Form Posting and getting the Data:
self.requestFor = serviceNameT;
responseData = [[NSMutableData data] retain];
SharedResponsedObject* sharedResponsedObject = [SharedResponsedObject returnSharedInstance];
LoginInfo* loginInfo = (LoginInfo*)sharedResponsedObject.loginInfo;
NSLog(@"DEVICE_TOKEN: %@, loginInfo.sessionId: %@, itemIdT: %@", DEVICE_TOKEN, loginInfo.sessionId, itemIdT);
NSString* requestStr = [NSString stringWithFormat:@"Token=%@&SessionId=%@&ItemId=%@", DEVICE_TOKEN, loginInfo.sessionId, itemIdT];
NSData *myRequestData = [ NSData dataWithBytes: [ requestStr UTF8String ] length: [ requestStr length ] ];
NSMutableURLRequest *request = [[ NSMutableURLRequest alloc ] initWithURL: [ NSURL URLWithString:@"http://menca.com:1500/DownloadContent.aspx"]];
[request setHTTPMethod: @"POST" ];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content-type"];
[ request setHTTPBody: myRequestData ];
NSURLResponse *response;
NSError *err;
NSData *returnData = [ NSURLConnection sendSynchronousRequest: request returningResponse:&response error:&err];
NSString *content = [NSString stringWithUTF8String:[returnData bytes]];
NSLog(@"ServerRequestResponse::responseData: %@", content);
Thanks & Regards, Arun Dhwaj
Ralf Mclaren
Updated on May 18, 2020Comments
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Ralf Mclaren almost 4 years
I'm fairly new to objective-c, and am looking to pass a number of key-value pairs to a PHP script using POST. I'm using the following code but the data just doesn't seem to be getting posted through. I tried sending stuff through using NSData as well, but neither seem to be working.
NSDictionary* data = [NSDictionary dictionaryWithObjectsAndKeys: @"bob", @"sender", @"aaron", @"rcpt", @"hi there", @"message", nil]; NSURL *url = [NSURL URLWithString:@"http://myserver.com/script.php"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; [request setHTTPMethod:@"POST"]; [request setHTTPBody:[NSData dataWithBytes:data length:[data count]]]; NSURLResponse *response; NSError *err; NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err]; NSLog(@"responseData: %@", content);
This is getting sent to this simple script to perform a db insert:
<?php $sender = $_POST['sender']; $rcpt = $_POST['rcpt']; $message = $_POST['message']; //script variables include ("vars.php"); $con = mysql_connect($host, $user, $pass); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("mydb", $con); mysql_query("INSERT INTO php_test (SENDER, RCPT, MESSAGE) VALUES ($sender, $rcpt, $message)"); echo "complete" ?>
Any ideas?
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Ralf Mclaren about 14 yearsAfraid not - now i'm getting: <HTML><HEAD><TITLE>400 Bad Request</TITLE></HEAD> <BODY><H1>400 Bad Request</H1> Your client has issued a malformed or illegal request. </BODY></HTML> back from the sendSynchronousRequest: method. Are there any other header fields i need to send to conform with HTTP?
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Ralf Mclaren about 14 yearsthanks, but not looking to use it more than this once in the whole project really. Although i do like the look of how easy it makes to post stuff.
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blackhawk4152 over 11 yearsTried almost everything, the whole thing was in this string. Thanks!