iOS 网络请求——post请求

 -(void)postRequest{

     NSString *urlString = [NSString stringWithFormat:@"http://f1.netgears.cn:8081/cloudadmin_new/interface/commonQueryDataObject.action"];

     NSURL *url = [NSURL URLWithString:urlString];
     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
     [request setHTTPMethod:@"POST"];
     NSString *str = @"opercode=yfc_intf&operPasswd=yy123&agentCode=fs_nh_yfc&action=queryOnlineUserData&pageNumber=1&framedipaddress=192.168.0.131";
     NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
     [request setHTTPBody:data];

     //同步post请求
     NSURLResponse * response = nil;
     NSError * error = nil;
     NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
     NSString *string = [[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
     NSLog(@">>>>>>>>>%@",string);

     //异步post请求
     NSOperationQueue *MyQueue = [[NSOperationQueue alloc]init];
     [NSURLConnection sendAsynchronousRequest:request queue:MyQueue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

         NSString *string = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
         NSLog(@">>>>>>>>>%@",string);

          }];
 }