I have to post parameters to an url and i have a parameter that has a "=" char so I should escape it. Here attach what I'm doing in objective-C.
for (NSString* key in json) {
NSString *current = [NSString stringWithFormat:#"&%#=%#",key,[json objectForKey:key]];
[post appendString: current];
}
//so post has this style: "&password=eodhxgkpo=&usuario=user1"
NSURL *urlObj = [NSURL URLWithString: itemAddress];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL: urlObj];
NSData *requestData = [NSData dataWithBytes:[post UTF8String] length:[post length]];
[request setHTTPMethod: #"POST"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"content-type"];
[request setValue:[NSString stringWithFormat:#"%d", [requestData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody: requestData];
[webView loadRequest: request];
this same code works if password has no "=" char. So there is any way to escape this kind of chars?
(the content-type has to be "application/x-www-form-urlencoded")
Thanks for your help
Danilo
You have the list of escapes codes for URL here:
http://www.december.com/html/spec/esccodes.html
You have to use %3D for escaping =
Hope it helps!
Try something like
// path is a NSString
NSURL* url = [NSURL URLWithString:[path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
Related
i am consuming the json webservice .i am assigning the stringurl to nsurl but the nsurl always assigning the null value. also i didn't get the response. can anyone suggest me what is the mistake i done in the following coding
- (IBAction)addbutton:(id)sender {
NSString *urltest = #"sample url";
NSURL *url = [NSURL URLWithString:urltest];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response,
NSData *data, NSError *connectionError)
{
if (data.length > 0 && connectionError == nil)
{
NSDictionary *greeting = [NSJSONSerialization JSONObjectWithData:data
options:0
error:NULL];
NSString *test= [[greeting objectForKey:#"code"] stringValue];
NSString *test1 = [greeting objectForKey:#"message"];
}
}];}
Your URL string is invalid, note the part:
taxName=ÂU.F¿Kåa¥gh
Those characters are not allowed in URL. Fix your URL to a valid URL (e.g. percent-encode parameter values).
E.g. the above with URL encoding would be:
taxName=%C3%82U.F%C2%BFK%C3%A5a%C2%A5gh
but I am not sure that's correct. The parameter value does not seem to be valid.
Please use this:
NSString *urlString = #"http://localhost:8080/MyWebservice.asmx/GetHelloWorldWithParam";
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod: #"POST"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
NSString *myRequestString = #"param="; // Attention HERE!!!!
[myRequestString stringByAppendingString:myParamString];
NSData *requestData = [NSData dataWithBytes:[myRequestString UTF8String] length:[myRequestString length]];
[request setHTTPBody: requestData];
Thank you
Im using codes posted here:
connection release method in connectionDidFinishLoading, causes error
now first execute returns didFail log.
second execute; returns old response data.
albeit my (localhost) server is totally offline.
and cachePolicy is NSURLCacheStorageNotAllowed (check the code on the link I posted above)
NSMutableURLRequest *request=
[NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:3.0f];
the response data seems cached somewhere and still exists.
but if I use NSURLRequestReloadIgnoringLocalAndRemoteCacheData //which is commented as -not implemented-
not returns old cache.
but if so what is the difference between:
NSURLRequestReloadIgnoringLocalAndRemoteCacheData
and
NSURLCacheStorageNotAllowed
what shall I do ?
NSURLCacheStorageNotAllowed refers to NSCachedURLResponse and is an value of enum NSURLCacheStoragePolicy. Since the cache policy of NSMutableURLRequest is also an enum (NSURLRequestCachePolicy) you just pass wrong int to the static method creating NSMutableURLRequest. In this case NSURLCacheStorageNotAllowed is just 2 which equals to NSURLRequestReturnCacheDataElseLoad - and that is why you get old data.
Try This
NSString *Post = [[NSString alloc] initWithFormat:#"Post Parameters"];
NSURL *Url = [NSURL URLWithString:#"Url"];
NSData *PostData = [Post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [PostData length]];
NSMutableURLRequest *Request = [[NSMutableURLRequest alloc] init];
[Request setURL:Url];
[Request setHTTPMethod:#"POST"];
[Request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[Request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[Request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[Request setHTTPBody:PostData];
NSError *error;
NSURLResponse *response;
NSData *Result = [NSURLConnection sendSynchronousRequest:Request returningResponse:&response error:&error];
if (!Result)
{
NSLog(#"Error");
}
else
{
//Parse the result
}
I am using objective C JSON parsing library. My web service returns the JSON response. My parser fails as there is an '\' character in the response string. The response string is like ":\/\/68.491.5.780\/iphoneapplication" but I want to be like "://68.491.5.780/".
My code is here:
NSURL *url=[NSURL URLWithString:
#"http:// url address/Accountservice/Security/ValidateAccess?accesscode=abcd&type=0"];
NSData *postData =
[post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
So how can I remove all back slash "\" in the response receive from web service?
you can replace \ with whitespace like:-
NSString *str =[NSString stringWithFormat:#"%#",#" hi \ hoowoer"];
str = [str stringByReplacingOccurrencesOfString:#"\""
withString:#""];
NSLog(#"==%#",str);
OUTPUT
hi hoowoer
How does one post xml as parameter with Objective C?
I've sent a username and a password in xml to the server. I've tried using ASIFormDataRequest. I've posted xml and the server've given the error that is "username or password is false". I think the server doesn't parse the posting xml. Is there any way to post xml as parameter?
NSURL *url = [NSURL URLWithString:#"url code"];
ASIFormDataRequest *request1 =[ASIFormDataRequest requestWithURL:url];
[request1 setPostValue:"xml block" forKey:#"data"];
[request1 addRequestHeader:#"Content-Type" value:#"application/xml;"];
[request1 setDelegate:self];
[request1 startSynchronous];
Yes, it is. Look at my example:
NSString *message = [[NSString alloc] initWithFormat:#"<?xml version=\"1.0\" ?>\n<parameters></parameters>"];
url = [NSURL URLWithString:#"https://https_url.com"];
request = [NSMutableURLRequest requestWithURL:url];
NSString *msgLength = [NSString stringWithFormat:#"%d",[message length]];
[request addValue:#"application/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[request addValue:msgLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[message dataUsingEncoding:NSUTF8StringEncoding]];
[message release];
I'm unable to get this to work:
NSString *post = [NSString stringWithFormat:#"userudid=%#", [udid stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSLog(#"%#",post);
NSData *postData = [NSData dataWithBytes:[post UTF8String] length:[post length]];
//[udid dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSLog(#"%#",postData);
//NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:#"http://www.myserver.com/myapp/readtags2.php"]];
[request setURL:url];
[request setHTTPMethod:#"POST"];
//[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
NSURLResponse *response;
NSError *error;
NSData *urlData = [NSURLConnection sendSynchronousRequest:request
returningResponse:&response error:&error];
NSString *content = [NSString stringWithUTF8String:[urlData bytes]];
NSLog(#"responseData: %#", content);
is the POST formed correctly? Because i can get it to work from a manual html form posting to the same php file, but i get nothing back when doing it from iOS
You might have an easier time doing HTTP POST's with ASIHTTPRequest.
Form-Posting with ASIHTTPRequest is explained in the section titled "Sending a form POST with ASIFormDataRequest" here: http://allseeing-i.com/ASIHTTPRequest/How-to-use
Otherwise, have a look at the NSURLResponse, check the response code and see if iOS thinks the POST was successful.
Other thing you can use to check is a tool like wireshark to compare the network traffic from your web-based form POST to the traffic from your iOS POST. It looks like you're doing it right, but the best way to be sure is something like wireshark.