AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayMsaasMediarecogAftsCertIdentifyRequest request = new AlipayMsaasMediarecogAftsCertIdentifyRequest();
request.setBizContent("{" +
"\"url\":\"http://xxx.com或djangoid或aftsid\"," +
"\"user_id\":\"42342423423324\"," +
"\"plate_number\":\"粤A9AA99\"," +
"\"w\":80," +
"\"h\":80," +
"\"x\":10," +
"\"y\":10," +
"\"ext\":\"{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}\"" +
"  }");
AlipayMsaasMediarecogAftsCertIdentifyResponse 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);
AlipayMsaasMediarecogAftsCertIdentifyRequest  request= new AlipayMsaasMediarecogAftsCertIdentifyRequest() ;
request.BizContent="{" +
"\"url\":\"http://xxx.com或djangoid或aftsid\"," +
"\"user_id\":\"42342423423324\"," +
"\"plate_number\":\"粤A9AA99\"," +
"\"w\":80," +
"\"h\":80," +
"\"x\":10," +
"\"y\":10," +
"\"ext\":\"{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}\"" +
"  }";
AlipayMsaasMediarecogAftsCertIdentifyResponse 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 AlipayMsaasMediarecogAftsCertIdentifyRequest ();
$request->setBizContent("{" .
"\"url\":\"http://xxx.com或djangoid或aftsid\"," .
"\"user_id\":\"42342423423324\"," .
"\"plate_number\":\"粤A9AA99\"," .
"\"w\":80," .
"\"h\":80," .
"\"x\":10," .
"\"y\":10," .
"\"ext\":\"{\\\"key1\\\":\\\"value1\\\",\\\"key2\\\":\\\"value2\\\"}\"" .
"  }");
$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.msaas.mediarecog.afts.cert.identify&app_id=5003&sign_type=RSA2&sign=ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE&version=1.0&biz_content=
  {
"url":"http://xxx.com或djangoid或aftsid",
"user_id":"42342423423324",
"plate_number":"粤A9AA99",
"w":80,
"h":80,
"x":10,
"y":10,
"ext":"{\"key1\":\"value1\",\"key2\":\"value2\"}"
  }

//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。

{
	"sign":"ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE",
	"alipay_msaas_mediarecog_afts_cert_identify_response":{
		"msg":"Success",
		"ocr_engine_number":"DSFSDFSFDF",
		"cert_type":"plate",
		"code":"10000",
		"cert_probability":0.9,
		"ocr_plate_number":"粤A9AA99",
		"ocr_vehicle_id":"DSFSDFAFAF",
		"ocr_name":"张三"
	}
}

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