使用NSURLConnection发送POST请求

Question

我在请求正文中发送带有some参数的post请求。

这是iOS代码：

 NSURL *url = [NSURL URLWithString:purchaseURL];

 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
 NSString *requestString = [NSString stringWithString:@"userid=1&couponid=1&Ccnum=7b6cd9a44365752cf39c1edf97890b72&Cctype=Visa&Cvv=434&Billingfirstname=Ankit&Billinglastname=Ankit&Street=some&getCity=mycity&State=mystate&getZip=54355&Ccexpmonth=5&Ccexpyear=2012&Phone=43423342"];
NSMutableData *postData=[NSMutableData data];
[postData appendData:[requestString dataUsingEncoding:NSUTF8StringEncoding]];

[request setHTTPMethod:@"POST"];
[request setValue:[NSString stringWithFormat:@"%d", [postData length]] forHTTPHeaderField:@"Content-Length"];
[request addValue:@"application/json" forHTTPHeaderField:@"Accept"];

NSLog(@"content length %d",[postData length]);
[request setValue:@"text/html" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];


NSLog(@"purchage url string %@",postData);

connection=[[NSURLConnection alloc] initWithRequest:request delegate:self];


  NSAssert(self.connection != nil, @"Failure to create URL connection.");

这是将处理post请求的php文件。 它处理输入，响应采用JSON格式。

 public function restpurchaseAction(Request $request)
 {

    $userid = $_POST['userid'];
    $couponid = $POST['couponid'];



    //Check that email was verified
//Get the user object to compare id to the listed deals id
if(!$user->getEmailVerified())
{
    return "Error:  Must verify email before making a purchase.";
}


// Initialize error varible
$error = "";


//get the currently logged in user
$repository = $this->getDoctrine()
        ->getRepository('FrontendUserBundle:User');
        $user = $repository->findOneByUsername($userid);
//get the coupon that is being purchased
$repository = $this->getDoctrine()
    ->getRepository('FrontendUserBundle:Coupon');
    $coupon = $repository->findOneById($couponid);        

//get the number of times the user has purchased and compare to maxper
$repository = $this->getDoctrine()
->getRepository('FrontendUserBundle:Purchase');     
//if they have already purchased max, redirect to error page
$purchases = $repository->findByCouponAndUser($coupon->getId(), $user->getId());
if(count($purchases) >= $coupon->getMaxper() && $coupon->getMaxper() != 0){
    "Error: Coupon purchased maximum number of times.";
}

//get the users profile
$profile = $user->getProfile();

//get the users address
$address = $profile->getAddress();

//initialize the new purchase
$purchase = new Purchase();

//generate the coupon verification code
$currentdate = new \DateTime();
$currentdate->setTimestamp(time());
$interval = new \DateInterval('P'.$coupon->getExpirationdate().'D');
$currentdate->add($interval);
$validationnumber1 = mt_rand(1000000, 9999999);
$validationnumber2 = mt_rand(1000000, 9999999);
$validationnumber = $validationnumber1 . $validationnumber2;

//set up all the values for the purchase object
$purchase->setValidationnumber($validationnumber);
$purchase->setUser($user);
$purchase->setCoupon($coupon);
$purchase->setValid(true);
$purchase->setValidationattempts(1);
$purchase->setExpirationDate($currentdate);
$card = $purchase->getCard();
$card->setCcnum($_POST['Ccnum']);
$card->setCctype($_POST['Cctype']);
$card->setCvv($_POST['Cvv']);
$card->setUserid($user->getId());

//If the form has already been submitted then check if it is a valid CC.  
//If so, then finish the purchase,else return to the start.
if($request->getMethod() == 'POST'){
    //Get post variables for credit card.

        //Live Mode Credentials
        define("AUTHORIZENET_API_LOGIN_ID", "**********");
        define("AUTHORIZENET_TRANSACTION_KEY", "***************");
        //Test Mode Credentials
        //define("AUTHORIZENET_API_LOGIN_ID", "*************");
        //define("AUTHORIZENET_TRANSACTION_KEY", "*****************");
        define("AUTHORIZENET_SANDBOX", false);
        $response="declined";

        //Make sure maxlimit hasn't been reached before processing.
        if($coupon->getMaxLimit() == 0 || $coupon->getNumPurchased()<=$coupon-                                                                                                                                     >getMaxLimit())
        {

        $sale = new AuthorizeNetAIM;

        /*Input coupon information. */
        $item_id = $coupon->getID();
        $item_name = substr($coupon->getCouponname(), 0, 31);
        $item_description = substr($coupon->getDescription(), 0,255);
        $item_quantity = 1;
        $item_unit_price = $coupon->getPrice();
        $item_taxable = FALSE;
        $billingaddress = $purchase->getBillingaddress();
        $card = $purchase->getCard();

        /*Input customer information. */
        $sale->setField('first_name', $_POST['Billingfirstname']);
        $sale->setField('last_name', $_POST['Billinglastname']);
        $sale->setField('email', $user->getEmail);
        $sale->setField('address', $_POST['Street']);
        $sale->setField('city', $_POST['getCity']);
        $sale->setField('state', $_POST['State']);
        $sale->setField('zip', $_POST['getZip']);
        $sale->setField('phone', $_POST['Phone']);


        /*Add information to the sale */
        $sale->addLineItem($item_id, $item_name, $item_description, $item_quantity, $item_unit_price, $item_taxable);
        $sale->amount = $coupon->getPrice();
        $sale->card_num = $_POST['Ccnum'];
        $sale->exp_date = $_POST['Ccexpmonth'] . '/' . $_POST['Ccexpyear'];
        $sale->setField('card_code', $_POST['Cvv']);

        $response = $sale->authorizeAndCapture();
        if ($response->approved) {
            //Prepersist, make sure to remove CVV, and extra CC digits, only store last 4
            $card->setCvv("");
            $lastfour = substr($card->getCcnum(), -4);
            $card->setCcnum($lastfour);
            $transaction_id = $response->transaction_id;
            $purchase->setId = $transaction_id;
            $coupon->incrementNumPurchased();
            $em = $this->get('doctrine')->getEntityManager();
            $em->persist($purchase);
            $em->persist($coupon);
            $em->flush();
            return "Coupon Purchase Successful!";

    }else{

        $error = $response->error_message;
     }
    }
    else{

        $error = "Maximum number of coupons already purchased!";

    }

 }

return $error;


}

我无法在代码中找到错误或任何问题。 我也尝试过ASIHttpRequest / ASIFormDataRequest，但无法让它工作。 我调用Web服务的方式有问题吗？

Answer 1

调试此问题的最简单方法是实际检查启动连接时出现的错误或响应类型。 为此，我建议您让您的类实现以下委托方法：

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
    NSLog(@"Did fail with error %@" , [error localizedDescription]);
}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
    NSHTTPURLResponse *httpResponse;
    httpResponse = (NSHTTPURLResponse *)response;
    int statusCode = [httpResponse statusCode];
    NSLog(@"Status code was %d", statusCode);
}

这有望让您更好地了解会发生什么。 希望能帮助到你 ：）

Answer 2

试试下面，它可能对你有所帮助......

NSString *purchaseURL=@"your url string inside";

NSString *postString=[NSString stringWithFormat:@"userid=1&couponid=1&Ccnum=7b6cd9a44365752cf39c1edf97890b72&Cctype=Visa&Cvv=434&Billingfirstname=Ankit&Billinglastname=Ankit&Street=some&getCity=mycity&State=mystate&getZip=54355&Ccexpmonth=5&Ccexpyear=2012&Phone=43423342"];

NSData *postData=[postString dataUsingEncoding:NSUTF8StringEncoding];

NSURL *url = [NSURL URLWithString:purchaseURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

[request setHTTPMethod:@"POST"];
[request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
[request setValue:[NSString stringWithFormat:@"%i",postData.length] forHTTPHeaderField:@"Content-Length"];
[request setHTTPShouldHandleCookies:YES];
[request setTimeoutInterval:30];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];

NSError *err=nil;

NSData *responseData=[NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&err];
NSString *responseString=[[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];

NSLog(@"response String is  %@",responseString);

如果仍然会给出一些错误，请尝试更改帖子字符串，如下所示

    NSMutableDictionary *postDix=[[NSMutableDictionary alloc] init];
[postDix setValue:@"1" forKey:@"userid"];
[postDix setValue:@"7b6cd9a44365752cf39c1edf97890b72" forKey:@"Ccnum"];
[postDix setValue:@"Visa" forKey:@"Cctype"];
[postDix setValue:@"434" forKey:@"Cvv"];
[postDix setValue:@"Ankit" forKey:@"Billingfirstname"];
[postDix setValue:@"Ankit" forKey:@"Billinglastname"];
[postDix setValue:@"some" forKey:@"Street"];
[postDix setValue:@"mycity" forKey:@"getCity"];
[postDix setValue:@"mystate" forKey:@"State"];
[postDix setValue:@"54355" forKey:@"getZip"];
[postDix setValue:@"5" forKey:@"Ccexpmonth"];
[postDix setValue:@"2012" forKey:@"Ccexpyear"];
[postDix setValue:@"43423342" forKey:@"Phone"];

NSString *postString=[NSString stringWithFormat:@"%@", postDix];

或将帖子数据更改为： -

NSMutableDictionary *postDix=[[NSMutableDictionary alloc] init];
[postDix setValue:@"1" forKey:@"userid"];
[postDix setValue:@"7b6cd9a44365752cf39c1edf97890b72" forKey:@"Ccnum"];
[postDix setValue:@"Visa" forKey:@"Cctype"];
[postDix setValue:@"434" forKey:@"Cvv"];
[postDix setValue:@"Ankit" forKey:@"Billingfirstname"];
[postDix setValue:@"Ankit" forKey:@"Billinglastname"];
[postDix setValue:@"some" forKey:@"Street"];
[postDix setValue:@"mycity" forKey:@"getCity"];
[postDix setValue:@"mystate" forKey:@"State"];
[postDix setValue:@"54355" forKey:@"getZip"];
[postDix setValue:@"5" forKey:@"Ccexpmonth"];
[postDix setValue:@"2012" forKey:@"Ccexpyear"];
[postDix setValue:@"43423342" forKey:@"Phone"];

NSMutableData *postData = [[NSMutableData alloc] init];
NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:postData];
[archiver encodeObject:postDix forKey:@"json"];
[archiver finishEncoding];