Http 设置header

在做HTTP或者HTTPS 数据请求的时候，有些设备信息可以添加到http的header里面。

1、原生数据请求

  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];

2、使用AFNetworking2.x

  AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
  manager.securityPolicy = [AFSecurityPolicy policyWithPinningMode:AFSSLPinningModeNone];
  manager.requestSerializer = [AFJSONRequestSerializer serializer];
  manager.responseSerializer = [AFJSONResponseSerializer serializer];
  [manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
  [manager.requestSerializer setValue:@"application/json; charset=utf-8" forHTTPHeaderField:@"Content-Type"];