Question

ios http都设置哪些header

Answer 1

1、让类实现这两个接口:
NSURLConnectionDelegate,NSURLConnectionDataDelegate
2、实现接口对应的方法：
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
NSInteger code=[(NSHTTPURLResponse*)response statusCode];
NSLog(@"didReceiveResponse....code=%d",code);
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
NSLog(@"didFailWithError...%@",[error description]);
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
NSLog(@"connectionDidFinishLoading....");

}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
NSString *str=[[NSString alloc]initWithData:data encoding:NSASCIIStringEncoding];
NSLog(@"didReceiveData....data=%@",str);

}
3、设置NSMutableURLRequest和发起请求：
NSString *strUrl=[NSString stringWithFormat:@" 你的地址"];
NSURL *url=[NSURL URLWithString:strUrl];
NSMutableURLRequest *request=[[NSMutableURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:20];
[request setHTTPMethod:@"GET"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"字段对应的值1" forHTTPHeaderField:@"你头部的字段1"];
[request setValue:@"字段对应的值2" forHTTPHeaderField:@"你头部的字段2"];
mConn=[[NSURLConnection alloc]initWithRequest:request delegate:self startImmediately:true];
[mConn start];