How to add URL parameters to JSON web service call - Objective C

Question

I'm trying to fetch information from a JSON web service with this code, using SBJsonParser API:

 SBJsonParser *parser = [[SBJsonParser alloc] init];

// Prepare URL request to download statuses from Twitter
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://twitter.com/statuses/public_timeline.json"]];

// Perform request and get JSON back as a NSData object
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

// Get JSON as a NSString from NSData response
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];

But I need to add to the web service URL two parameters, user and password, with their values, so the URL will be "http://twitter.com/statuses/public_timeline.json?user=name&password=test". I have searched information about APIs to do it but I wasn't successful.

Many thanks for your help.

Noah Witherspoon · Accepted Answer · 2012-02-23 16:24:59Z

3

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://twitter.com/statuses/public_timeline.json?user=%@&password=%@", @"name", @"test"]]];

Substitute your own variables for @"name" and @"test" as needed.

answered Feb 23, 2012 at 16:24

Noah Witherspoon

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Comments

picciano · Accepted Answer · 2012-02-23 16:26:10Z

2

I assume you have the values in variables, correct? If so, just use the stringWithFormat: method of NSString.

Replace:

@"http://twitter.com/statuses/public_timeline.json"

With:

[NSString stringWithFormat:@"http://twitter.com/statuses/public_timeline.json?user=%@&password=%@", user, password]

answered Feb 23, 2012 at 16:26

picciano

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1 Comment

Bryan Johnson Over a year ago

-1 The other answers are correct: For example:[NSString stringWithFormat : @"http:\//twitter.com/statuses/public_timeline.json?user=%@&password=%@", @"user", @"pas=?/word"] would result in: "http:\//twitter.com/statuses/public_timeline.json?user=user&password=pas=?/word" There is no proper URL escaping in this solution.

GeT · Accepted Answer · 2012-02-23 16:27:04Z

2

NSString *user = @"user";
NSString *password = @"password";

NSString *urlStr = [NSString stringWithFormat:@"http://twitter.com/statuses/public_timeline.json?user=%@&password=%@", user, password];

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString: urlStr]];

answered Feb 23, 2012 at 16:27

GeT

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Comments

Popeye · Accepted Answer · 2012-03-13 09:29:45Z

0

You could also do it this way.

 NSMutableURLRequest *theRequest = [[NSMutableURLRequest alloc] initWithURL:@"http://twitter.com/statuses/public_timeline.json"];

 [theRequest setHTTPMethod:"@POST"] // Or get, push, put

 NSString theRquest_Body = [NSString stringWithFormat:@"?user=%@&password=%@",
                           [user stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding],
                           [password stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]],

 [theRequest setHTTPBody:[theRequest_body dataUsingEncoding:NSUTF8StringEncoding]];

answered Mar 13, 2012 at 9:29

Popeye

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