AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
KoubeiCateringItemlistQueryRequest request = new KoubeiCateringItemlistQueryRequest();
request.setBizContent("{" +
"\"operator_type\":\"MERCHANT\"," +
"\"request_id\":\"2016102903214476899999999\"," +
"\"page_no\":1," +
"\"page_size\":10," +
"\"auth_code\":\"6a8713a414da4a2dafdb7c24e597TX80\"," +
"\"item_status\":\"EFFECTIVE\"" +
"  }");
KoubeiCateringItemlistQueryResponse 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);
KoubeiCateringItemlistQueryRequest  request= new KoubeiCateringItemlistQueryRequest() ;
request.BizContent="{" +
"\"operator_type\":\"MERCHANT\"," +
"\"request_id\":\"2016102903214476899999999\"," +
"\"page_no\":1," +
"\"page_size\":10," +
"\"auth_code\":\"6a8713a414da4a2dafdb7c24e597TX80\"," +
"\"item_status\":\"EFFECTIVE\"" +
"  }";
KoubeiCateringItemlistQueryResponse 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 KoubeiCateringItemlistQueryRequest ();
$request->setBizContent("{" .
"\"operator_type\":\"MERCHANT\"," .
"\"request_id\":\"2016102903214476899999999\"," .
"\"page_no\":1," .
"\"page_size\":10," .
"\"auth_code\":\"6a8713a414da4a2dafdb7c24e597TX80\"," .
"\"item_status\":\"EFFECTIVE\"" .
"  }");
$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=koubei.catering.itemlist.query&app_id=5203&sign_type=RSA2&sign=ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE&version=1.0&biz_content=
  {
"operator_type":"MERCHANT",
"request_id":"2016102903214476899999999",
"page_no":1,
"page_size":10,
"auth_code":"6a8713a414da4a2dafdb7c24e597TX80",
"item_status":"EFFECTIVE"
  }

//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。

{
	"koubei_catering_itemlist_query_response":{
		"msg":"Success",
		"code":"10000",
		"total_amount":100,
		"item_list":[
			{
				"original_price":120.12,
				"item_id":"2015090300006123123213213",
				"subject":"鱼香肉丝杨梅汁套餐",
				"price":"119.99",
				"validity_period":360,
				"reject_reason":"优惠价格太低，退回修改",
				"inventory":123,
				"gmt_modified":"2016-10-07 11:30:24",
				"item_status":"INIT"
			}
		],
		"request_id":"2016102903214476899999999"
	},
	"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE"
}

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