TaobaoClient client = new DefaultTaobaoClient(url, appkey, secret);
AlibabaCategoryQueryFirstlevelcatsRequest req = new AlibabaCategoryQueryFirstlevelcatsRequest();
req.setChannelId(1L);
AlibabaCategoryQueryFirstlevelcatsResponse rsp = client.execute(req);
System.out.println(rsp.getBody());

ITopClient client = new DefaultTopClient(url, appkey, secret);
AlibabaCategoryQueryFirstlevelcatsRequest req = new AlibabaCategoryQueryFirstlevelcatsRequest();
req.ChannelId = 1L;
AlibabaCategoryQueryFirstlevelcatsResponse rsp = client.Execute(req);
Console.WriteLine(rsp.Body);

$c = new TopClient;
$c->appkey = $appkey;
$c->secretKey = $secret;
$req = new AlibabaCategoryQueryFirstlevelcatsRequest;
$req->setChannelId("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=alibaba.category.query.firstlevelcats' \
-d 'partner_id=apidoc' \
-d 'sign=140CBD894751B30B56394DE114C6A1F5' \
-d 'sign_method=hmac' \
-d 'timestamp=2025-04-28+16%3A30%3A28' \
-d 'v=2.0' \
-d 'channel_id=1'

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

req=top.api.AlibabaCategoryQueryFirstlevelcatsRequest(url,port)
req.set_app_info(top.appinfo(appkey,secret))

req.channel_id=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,"alibaba.category.query.firstlevelcats");
add_param(pRequest,"channel_id","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('alibaba.category.query.firstlevelcats', {
	'channel_id':'1'
}, function(error, response) {
	if (!error) console.log(response);
	else console.log(error);
})

<alibaba_category_query_firstlevelcats_response>
    <result_list>
        <simple_std_category_dto>
            <category_id>123</category_id>
            <category_name>demo</category_name>
            <channel_id>123</channel_id>
            <feature_string>demo</feature_string>
            <leaf>false</leaf>
            <parent_id>123</parent_id>
            <sort_order>123</sort_order>
        </simple_std_category_dto>
    </result_list>
</alibaba_category_query_firstlevelcats_response>

{
    "alibaba_category_query_firstlevelcats_response":{
        "result_list":{
            "simple_std_category_dto":[
                {
                    "category_id":123,
                    "category_name":"demo",
                    "channel_id":123,
                    "feature_string":"demo",
                    "leaf":false,
                    "parent_id":123,
                    "sort_order":123
                }
            ]
        }
    }
}

<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"
	}
}