请求设置 HTTP 头

我需要为请求设置 HTTP 头。在 NSULRequest 类的文档中，我没有发现任何关于 HTTP 头的内容。如何将 HTTP 头设置为包含自定义数据？

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最佳答案

You need to use a NSMutableURLRequest

NSMutableURLRequest* request = [[[NSMutableURLRequest alloc] initWithURL:url]
autorelease];


[request setValue:VALUE forHTTPHeaderField:@"Field You Want To Set"];

or to add a header:

[request addValue:VALUE forHTTPHeaderField:@"Field You Want To Set"];
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 NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60];


[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"your value" forHTTPHeaderField:@"for key"];//change this according to your need.
[request setHTTPBody:postData];
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You can add value in NSMutableURLRequest for HeaderField :

NSMutableURLRequest* request = [[NSMutableURLRequest alloc] initWithURL:url];


[request setValue:VALUE forHTTPHeaderField:@"cookie"];

This is working for me.

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for Swift

let url: NSURL = NSURL(string: APIBaseURL + "&login=1951&pass=1234")!
var params = ["login":"1951", "pass":"1234"]
request = NSMutableURLRequest(URL:url)
request.HTTPMethod = "POST"
var err: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: nil, error: &err)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
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Sample Code

 - (void)reqUserBalance:(NSString*)reward_scheme_id id:(NSString*)user_id success:(void (^)(id responseObject))success failure:(void (^)(id responseObject))failure{


NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@reward/%@/user/%@/balance",URL_SERVER,reward_scheme_id,user_id]];
NSLog(@"%@",url);
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];


[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"true" forHTTPHeaderField:@"Bypass"];


[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response,
NSData *data, NSError *connectionError)
{
options:kNilOptions error:NULL];


if (data.length > 0 && connectionError == nil)
{
NSDictionary * userPoints = [NSJSONSerialization JSONObjectWithData:data
options:0
error:NULL];


NSString * points = [[userPoints objectForKey:@"points"] stringValue];
NSLog(@"%@",points);
[SecuritySetting sharedInstance].usearAvailablePoints = points;




}
}];


}
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I know its late but may help others , For SWIFT 3.0

let url = NSURL(string: "http://www.yourwebsite.com")
let mutAbleRequest = NSMutableURLRequest(URL: url!)
mutAbleRequest.setValue("YOUR_HEADER_VALUE", forHTTPHeaderField:"YOUR_HEADER_NAME")
myWebView.loadRequest(mutAbleRequest)

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