AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do","app_id","your private_key","json","GBK","alipay_public_key","RSA2");
AlipayOpenPublicMessageSingleSendRequest request = new AlipayOpenPublicMessageSingleSendRequest();
request.setBizContent("{" +
"\"to_user_id\":\"2088202882050410\"," +
"\"template\":{" +
"\"template_id\":\"cbb9fdded2b74fe4bb082de3ed1e1eb2\"," +
"\"context\":{" +
"\"head_color\":\"#85be53\"," +
"\"url\":\"http://m.baidu.com\"," +
"\"action_name\":\"查看详情\"," +
"\"keyword1\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }," +
"\"keyword2\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }," +
"\"first\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }," +
"\"remark\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }" +
"      }" +
"    }" +
"  }");
AlipayOpenPublicMessageSingleSendResponse 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);
AlipayOpenPublicMessageSingleSendRequest  request= new AlipayOpenPublicMessageSingleSendRequest() ;
request.BizContent="{" +
"\"to_user_id\":\"2088202882050410\"," +
"\"template\":{" +
"\"template_id\":\"cbb9fdded2b74fe4bb082de3ed1e1eb2\"," +
"\"context\":{" +
"\"head_color\":\"#85be53\"," +
"\"url\":\"http://m.baidu.com\"," +
"\"action_name\":\"查看详情\"," +
"\"keyword1\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }," +
"\"keyword2\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }," +
"\"first\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }," +
"\"remark\":{" +
"\"color\":\"#85be53\"," +
"\"value\":\"HU7142\"" +
"        }" +
"      }" +
"    }" +
"  }";
AlipayOpenPublicMessageSingleSendResponse 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 AlipayOpenPublicMessageSingleSendRequest ();
$request->setBizContent("{" .
"\"to_user_id\":\"2088202882050410\"," .
"\"template\":{" .
"\"template_id\":\"cbb9fdded2b74fe4bb082de3ed1e1eb2\"," .
"\"context\":{" .
"\"head_color\":\"#85be53\"," .
"\"url\":\"http://m.baidu.com\"," .
"\"action_name\":\"查看详情\"," .
"\"keyword1\":{" .
"\"color\":\"#85be53\"," .
"\"value\":\"HU7142\"" .
"        }," .
"\"keyword2\":{" .
"\"color\":\"#85be53\"," .
"\"value\":\"HU7142\"" .
"        }," .
"\"first\":{" .
"\"color\":\"#85be53\"," .
"\"value\":\"HU7142\"" .
"        }," .
"\"remark\":{" .
"\"color\":\"#85be53\"," .
"\"value\":\"HU7142\"" .
"        }" .
"      }" .
"    }" .
"  }");
$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.open.public.message.single.send&app_id=2593&sign_type=RSA2&sign=ERITJKEIJKJHKKKKKKKHJEREEEEEEEEEEE&version=1.0&biz_content=
  {
"to_user_id":"2088202882050410",
"template":{
"template_id":"cbb9fdded2b74fe4bb082de3ed1e1eb2",
"context":{
"head_color":"#85be53",
"url":"http://m.baidu.com",
"action_name":"查看详情",
"keyword1":{
"color":"#85be53",
"value":"HU7142"
        },
"keyword2":{
"color":"#85be53",
"value":"HU7142"
        },
"first":{
"color":"#85be53",
"value":"HU7142"
        },
"remark":{
"color":"#85be53",
"value":"HU7142"
        }
      }
    }
  }

//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_open_public_message_single_send_response":{
		"msg":"Success",
		"code":"10000"
	}
}

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