AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayEcoMycarParkingOrderSyncRequest request = new AlipayEcoMycarParkingOrderSyncRequest();
request.setBizContent("{" +
"\"user_id\":\"2088006362935583\"," +
"\"out_parking_id\":\"201605061278654\"," +
"\"parking_name\":\"上海证大五道口地下停车场\"," +
"\"car_number\":\"浙Axxxxx\"," +
"\"out_order_no\":\"201605061278654435466567\"," +
"\"order_status\":\"1\"," +
"\"order_time\":\"2016-08-12 20:27:30\"," +
"\"order_no\":\"7674879087745646586\"," +
"\"pay_time\":\"2016-08-12 23:20:23\"," +
"\"pay_type\":\"1\"," +
"\"pay_money\":\"20.00\"," +
"\"in_time\":\"2016-08-12 20:20:13\"," +
"\"parking_id\":\"1234567890123456\"," +
"\"in_duration\":\"320\"," +
"\"card_number\":\"2357868977445645645656\"" +
"  }");
AlipayEcoMycarParkingOrderSyncResponse response = alipayClient.execute(request);
if(response.isSuccess()){
System.out.println("调用成功");
} else {
System.out.println("调用失败");
}

IAopClient client = new DefaultAopClient("https://openapi.alipay.com/gateway.do", "app_id", "merchant_private_key", "json", "1.0", "RSA2", "alipay_public_key", "GBK", false);
AlipayEcoMycarParkingOrderSyncRequest  request= new AlipayEcoMycarParkingOrderSyncRequest() ;
request.BizContent="{" +
"\"user_id\":\"2088006362935583\"," +
"\"out_parking_id\":\"201605061278654\"," +
"\"parking_name\":\"上海证大五道口地下停车场\"," +
"\"car_number\":\"浙Axxxxx\"," +
"\"out_order_no\":\"201605061278654435466567\"," +
"\"order_status\":\"1\"," +
"\"order_time\":\"2016-08-12 20:27:30\"," +
"\"order_no\":\"7674879087745646586\"," +
"\"pay_time\":\"2016-08-12 23:20:23\"," +
"\"pay_type\":\"1\"," +
"\"pay_money\":\"20.00\"," +
"\"in_time\":\"2016-08-12 20:20:13\"," +
"\"parking_id\":\"1234567890123456\"," +
"\"in_duration\":\"320\"," +
"\"card_number\":\"2357868977445645645656\"" +
"  }";
AlipayEcoMycarParkingOrderSyncResponse response=client.Execute(request);
Console.WriteLine(response.Body);

$aop = new AopClient ();
$aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
$aop->appId = 'your app_id';
$aop->rsaPrivateKey = '请填写开发者私钥去头去尾去回车，一行字符串';
$aop->alipayrsaPublicKey='请填写支付宝公钥，一行字符串';
$aop->apiVersion = '1.0';
$aop->signType = 'RSA2';
$aop->postCharset='GBK';
$aop->format='json';
$request = new AlipayEcoMycarParkingOrderSyncRequest ();
$request->setBizContent("{" .
"\"user_id\":\"2088006362935583\"," .
"\"out_parking_id\":\"201605061278654\"," .
"\"parking_name\":\"上海证大五道口地下停车场\"," .
"\"car_number\":\"浙Axxxxx\"," .
"\"out_order_no\":\"201605061278654435466567\"," .
"\"order_status\":\"1\"," .
"\"order_time\":\"2016-08-12 20:27:30\"," .
"\"order_no\":\"7674879087745646586\"," .
"\"pay_time\":\"2016-08-12 23:20:23\"," .
"\"pay_type\":\"1\"," .
"\"pay_money\":\"20.00\"," .
"\"in_time\":\"2016-08-12 20:20:13\"," .
"\"parking_id\":\"1234567890123456\"," .
"\"in_duration\":\"320\"," .
"\"card_number\":\"2357868977445645645656\"" .
"  }");
$result = $aop->execute ( $request); 

$responseNode = str_replace(".", "_", $request->getApiMethodName()) . "_response";
$resultCode = $result->$responseNode->code;
if(!empty($resultCode)&&$resultCode == 10000){
echo "成功";
} else {
echo "失败";
}

https://openapi.alipay.com/gateway.do?timestamp=2013-01-01 08:08:08&method=alipay.eco.mycar.parking.order.sync&app_id=2684&sign_type=RSA2&sign=ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE&version=1.0&biz_content=
  {
"user_id":"2088006362935583",
"out_parking_id":"201605061278654",
"parking_name":"上海证大五道口地下停车场",
"car_number":"浙Axxxxx",
"out_order_no":"201605061278654435466567",
"order_status":"1",
"order_time":"2016-08-12 20:27:30",
"order_no":"7674879087745646586",
"pay_time":"2016-08-12 23:20:23",
"pay_type":"1",
"pay_money":"20.00",
"in_time":"2016-08-12 20:20:13",
"parking_id":"1234567890123456",
"in_duration":"320",
"card_number":"2357868977445645645656"
  }

//为确保安全通信，需自行验证响应示例中的sign值是否为蚂蚁金服所提供。

{
	"alipay_eco_mycar_parking_order_sync_response":{
		"msg":"Success",
		"code":"10000"
	},
	"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE"
}

{
	"alipay_eco_mycar_parking_order_sync_response":{
		"msg":"Service Currently Unavailable",
		"code":"20000",
		"sub_msg":"系统繁忙",
		"sub_code":"isp.unknow-error"
	},
	"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE"
}