iOS同步post请求

-(NSDictionary * )SynchronousRequestUserBaseFromRemoteWith:(NSString *)userId{

//第一步，创建URL

NSString  *  urlStr =  @"http://";

NSURL *url = [NSURL URLWithString:urlStr];

//第二步，通过URL创建网络请求

NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10];

    [request setHTTPMethod:@"POST"];//设置请求方式为POST，默认为GET

NSString * stuss    =   [[NSUserDefaults standardUserDefaults] objectForKey:STUSS];

    stuss = stuss==nil?@"":stuss;

NSMutableDictionary  * dic      = [[NSMutableDictionary alloc]initWithObjectsAndKeys:userbaseAction,@"action",stuss,@"stuss",SIDFA,@"cuid",AppCurVersion,@"sv",PhoneVersion,@"ossv",@"IOS",@"os",userId,@"target",nil];

NSString *str = [NSString stringWithFormat:@"%@=%@&%@=%@&%@=%@&%@=%@&%@=%@&%@=%@&%@=%@&%@=%@",@"action",userbaseAction,@"stuss",stuss,@"cuid",SIDFA,@"sv",AppCurVersion,@"ossv",PhoneVersion,@"os",@"IOS",@"target",userId,@"sign",[[SignHelper sharedSignHelper] httpSignWithDic:dic]];//设置参数

NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];

    [request setHTTPBody:data];

//第三步，连接服务器

NSData *received = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

NSDictionary  *  dic1  = [NSJSONSerialization JSONObjectWithData:received options:NSJSONReadingMutableContainers error:nil];

// NSString *str1 = [[NSString alloc]initWithData:received encoding:NSUTF8StringEncoding];

return dic1;

}