TaobaoClient client = new DefaultTaobaoClient(url, appkey, secret);
SlbAliyuncsComDescribeBackendServers2013-02-21Request req = new SlbAliyuncsComDescribeBackendServers2013-02-21Request();
req.setLoadBalancerId("1");
req.setListenerPort(1L);
SlbAliyuncsComDescribeBackendServers2013-02-21Response rsp = client.execute(req);
System.out.println(rsp.getBody());

ITopClient client = new DefaultTopClient(url, appkey, secret);
SlbAliyuncsComDescribeBackendServers2013-02-21Request req = new SlbAliyuncsComDescribeBackendServers2013-02-21Request();
req.LoadBalancerId = "1";
req.ListenerPort = 1L;
SlbAliyuncsComDescribeBackendServers2013-02-21Response rsp = client.Execute(req);
Console.WriteLine(rsp.Body);

$c = new TopClient;
$c->appkey = $appkey;
$c->secretKey = $secret;
$req = new SlbAliyuncsComDescribeBackendServers2013-02-21Request;
$req->setLoadBalancerId("1");
$req->setListenerPort("1");
$resp = $c->execute($req);

curl -X POST 'http://gw.api.taobao.com/router/rest' \
-H 'Content-Type:application/x-www-form-urlencoded;charset=utf-8' \
-d 'app_key=12129701' \
-d 'format=json' \
-d 'method=slb.aliyuncs.com.DescribeBackendServers.2013-02-21' \
-d 'partner_id=apidoc' \
-d 'sign=0E68BC62A879BCA7D01356B704973066' \
-d 'sign_method=hmac' \
-d 'timestamp=2025-05-29+06%3A17%3A08' \
-d 'v=2.0' \
-d 'listenerPort=1' \
-d 'loadBalancerId=1'

# -*- coding: utf-8 -*-
import top.api

req=top.api.SlbAliyuncsComDescribeBackendServers2013-02-21Request(url,port)
req.set_app_info(top.appinfo(appkey,secret))

req.loadBalancerId="1"
req.listenerPort=1
try:
	resp= req.getResponse()
	print(resp)
except Exception,e:
	print(e)

pTopRequest pRequest = alloc_top_request();
pTopResponse pResponse = NULL;
pTaobaoClient pClient = alloc_taobao_client(url, appkey, appsecret);
set_api_name(pRequest,"slb.aliyuncs.com.DescribeBackendServers.2013-02-21");
add_param(pRequest,"loadBalancerId","1");
add_param(pRequest,"listenerPort","1");
pResponse = top_execute(pClient,pRequest,NULL);
printf("ret code:%d\n",pResponse->code);
if(pResponse->code == 0){
	pTopResponseIterator ite = init_response_iterator(pResponse);
	pResultItem pResultItem = alloc_result_item();
	while(parseNext(ite, pResultItem) == 0){
		printf("%s:%s\n",pResultItem->key,pResultItem->value);
	}
	destroy_response_iterator(ite);
	destroy_result_item(pResultItem);
}
destroy_top_request(pRequest);
destroy_top_response(pResponse);
destroy_taobao_client(pClient);

TopClient = require('./topClient').TopClient;
var client = new TopClient({
	'appkey': 'appkey',
	'appsecret': 'secret',
	'REST_URL': 'http://gw.api.taobao.com/router/rest'
});

client.execute('slb.aliyuncs.com.DescribeBackendServers.2013-02-21', {
	'loadBalancerId':'1',
	'listenerPort':'1'
}, function(error, response) {
	if (!error) console.log(response);
	else console.log(error);
})

<slb_aliyuncs_com_DescribeBackendServers_2013-02-21_response>
    <requestid>xxx</requestid>
    <loadbalancerid>139a00604ad-cn-east-hangzhou-01</loadbalancerid>
    <listeners>
        <listener>
        </listener>
    </listeners>
</slb_aliyuncs_com_DescribeBackendServers_2013-02-21_response>

{
    "slb_aliyuncs_com_DescribeBackendServers_2013-02-21_response":{
        "requestid":"xxx",
        "loadbalancerid":"139a00604ad-cn-east-hangzhou-01",
        "listeners":{
            "listener":[
                {
                }
            ]
        }
    }
}

<error_response>
    <code>50</code>
    <msg>Remote service error</msg>
    <sub_code>isv.invalid-parameter</sub_code>
    <sub_msg>非法参数</sub_msg>
</error_response>

{
	"error_response":{
		"msg":"Remote service error",
		"code":50,
		"sub_msg":"非法参数",
		"sub_code":"isv.invalid-parameter"
	}
}