NSURL *url = [NSURL URLWithString:#"appName://<?xml version=\"1.0\" encoding=\"UTF-8\"?>"];
But the url = nil. I found if I remove the "<" and ">" signs, it will be ok.
So, the two signs cannot be used in a URL? Should I replace the signs with another one?
Thanks!
I solved this problem.
Before I do NSURL *url = [NSURL URLWithString:#"...."];
I first do:
NSString *urlStr = [string stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
And when parse this url on the receiver side, I firstly do:
NSString *urlString = [[url absoluteString] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; // url is a NSURL
Why would you not just POST the document in the body of the request?
GET requests are not designed for this. You may get into difficulty if there are UTF-8 chars in the document.
Also What is the maximum length of a URL in different browsers? implies a max of 2083 chars.
You're into a very browser/proxy dependent scenario.
Theoretically yes. You can use urlEncode to do this.
The HTTP protocol does not place any limit on the length of the URL.
RFC says:
Note: Servers ought to be cautious about depending on URI lengths
above 255 bytes, because some older client or proxy implementations
might not properly support these lengths.
Related
I'm creating a module that receive and REST URL and need to match a pattern and extract the parameters
For example:
the URL "http://Product/1" should match the pattern "http://Product/{productId:long}"
and return the Dictionary with productId as a key and "1" as the value in as long
Does anyone knows about a Framework for IPhone that does it, or at least some of it?
NSURL has a method pathComponents, which returns an array with all the different path components. That should help you get the integer part. To get the name I'd use the host method of the NSURL. The docs say, that it should work if the URL is properly formatted, might as well give it a try then.
All in all, no need to convert into a string, there seems to be plenty of methods to work out the components of the URL from the NSURL object itself.
NSString *path = [[#"path+with+spaces"
stringByReplacingOccurrencesOfString:#"+" withString:#" "]
stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
I have the following code in objective c that is supposed to make a GET http request to my website which in turn will submit something into my MySQL database...
NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://www.website.com/VideoPush/plist/urlTransfer.php"]];
[request setHTTPMethod:#"GET"];
NSString *post =[[NSString alloc] initWithFormat:#"videoID=%#",videoURL];
[request setHTTPBody:[post dataUsingEncoding:NSUTF8StringEncoding]];
Note: I'm a total beginner to http requests with Objective c so I realize I could be missing something obvious...
Now if I run the following url in my browser...
http://www.website.com/VideoPush/plist/urlTransfer.php?videoID=hhklskdjsad
Then something gets entered into the database, but not when I'm using objective c. Also what is the difference between GET and POST when you make requests like this (since the user doesn't see the url anyways)?
ALSO: Am I allowed to pass a url (still a nsstring with /'s though) as the videoURL variable above
You've tried to set the body of a GET request, which makes no sense. What you probably want is:
NSString *urlString = [NSString stringWithFormat:#"http://www.website.com/VideoPush/plist/urlTransfer.php?videoID=%#", videoURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
... the rest of your method ...
You should probably go and have a read up about what a GET and a POST is and why I said it makes no sense to have a body in a GET request.
ALSO: Am I allowed to pass a url (still a nsstring with /'s though) as the videoURL variable above
No, you will need to URL encode anything in the query string. You can use CFURLCreateStringByAddingPercentEscapes to do this for you.
I need to load data from a REST service, but the result is always (null) when I have any accentuation. I know this is an encoding problem but NSUrlConnection gives me no solution. The best result I got is to have all my text with strange codes in the place of the accentuated characters.
I already tried to use NSUrl like the following code and it works, but I need to set two headers for this connection.
NSURL *nsurl = [[NSURL alloc] initWithString:url];
NSString *data = [[NSString alloc] initWithContentsOfURL:nsurl encoding: NSUTF8StringEncoding error: nil];
Well I could have two solutions for this taks, adding headers do NSUrl connection or manage to make the encoding to work in NSURLConnection.
Does anyone have a solution?
You can add header fields for your request in an NSMutableURLRequest instance with setValue:forHTTPHeaderField:
I am using the NSURL class in the iPhone framework foundation library to create a url request to a server. For some reason, I am getting back a nil for only this particular URL.
I don't understand why. Any reason?
The Objective C code is :
NSURL *scriptURL= [NSURL URLWithString:scriptURLString];
where scriptURLString is an NSString with value give below:
http://myserver/cgi-bin/AdsERsubset.cgi?user=139&fieldList=employee_num,mbox_num,last_name,first_name,disp_emp_num,company_num,TECH_PRIVILEDGE,printer_code,desktop_cos,id,supv_emp_num&action=first&searchkey=1 with proxy=DIRECT
The above URL is a CGI request.
Is there a special character I need to escape here?
Please advice. Thanks in advance.
The spaces in the searchkey should be escaped.
Use stringByAddingPercentEscapesUsingEncoding on the url string before passing it to URLWithString:
NSURL *scriptURL= [NSURL URLWithString:[scriptURLString
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
...&searchkey=1 with proxy=DIRECT
Your missing an & aren't you?
I'd imagine it would be more like:
...&searchkey=1&with%20proxy=DIRECT
or
...&searchkey=1&withproxy=DIRECT
Hey, Iam new to objective c and really dont know much about it. I have been given a query that is gonna I need to send data in to the server.Query is like this http://abc.com/insertipademail.php?name=name&email=email I need to enter the name and email I have constructed the string But I dont know how to send it to the server. Can someone help me out please. Or point me in the right direction. Thanks
For starters, take a look a NSString's stringWithContentsOfURL:encoding:error: method. You could do something like:
// NSString * myURLString = whatever you do to build the url
NSURL * myURL = [NSURL URLWithString: myURLString];
NSString * response = [NSString stringWithContentsOfURL: myURL encoding: NSUTF8StringEncoding error: NULL];
NSLog(#"The response was: %#", response);
As written, this will ignore all errors and perform the request synchronously. In a real app, you probably want to handle any error that occur, and perhaps perform the request in the background. See the URL Loading System Programming Guide for further documentation. You can also try using any of several open source libraries such as those suggested in David M.'s answer.
I like the library ASIHTTPRequest. There is also HTTPRiot.