Objectivec 将 HTTP 标头添加到 NSURLRequest

发布于11月24日

有没有办法将HTTP头添加到NSURLRequest对象？我曾经在NSMutableURLRequest中添加它们，使用:

[request addValue:@"PC" forHTTPHeaderField:@"machineName"]

推荐答案

我认为你不能修改NSURLRequest的HTTP头.我想你是想修改一个没有初始化的NSURLRequest对象？

您可以创建mutableCopy个请求，然后使用以下方法设置标题字段:

 -(void)setValue:(NSString *)value forHTTPHeaderField:(NSString *)field.

之后，您可以将可变请求返回到NSURLRequest变量中.

EDIT:下面增加了一个例子

/* Create request variable containing our immutable request
 * This could also be a paramter of your method */
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.stackoverflow.com"]];

// Create a mutable copy of the immutable request and add more headers
NSMutableURLRequest *mutableRequest = [request mutableCopy];
[mutableRequest addValue:@"Hless" forHTTPHeaderField:@"X-user-nick"];

// Now set our request variable with an (immutable) copy of the altered request
request = [mutableRequest copy];

// Log the output to make sure our new headers are there    
NSLog(@"%@", request.allHTTPHeaderFields);