TaobaoClient client = new DefaultTaobaoClient(url, appkey, secret);
OpentradeGroupOpenRequest req = new OpentradeGroupOpenRequest();
req.setItemId(1233L);
req.setOpenUserId("adfafa");
req.setGroupActivityId(111111L);
OpentradeGroupOpenResponse rsp = client.execute(req, sessionKey);
System.out.println(rsp.getBody());

ITopClient client = new DefaultTopClient(url, appkey, secret);
OpentradeGroupOpenRequest req = new OpentradeGroupOpenRequest();
req.ItemId = 1233L;
req.OpenUserId = "adfafa";
req.GroupActivityId = 111111L;
OpentradeGroupOpenResponse rsp = client.Execute(req, sessionKey);
Console.WriteLine(rsp.Body);

$c = new TopClient;
$c->appkey = $appkey;
$c->secretKey = $secret;
$req = new OpentradeGroupOpenRequest;
$req->setItemId("1233");
$req->setOpenUserId("adfafa");
$req->setGroupActivityId("111111");
$resp = $c->execute($req, $sessionKey);

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=taobao.opentrade.group.open' \
-d 'partner_id=apidoc' \
-d 'session=de1d14d4-c036-4d26-9961-e3f5e08fa199' \
-d 'sign=467F3A6AD378C170053CCA2C5A45507B' \
-d 'sign_method=hmac' \
-d 'timestamp=2025-05-02+22%3A59%3A38' \
-d 'v=2.0' \
-d 'group_activity_id=111111' \
-d 'item_id=1233' \
-d 'open_user_id=adfafa'

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

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

req.item_id=1233
req.open_user_id="adfafa"
req.group_activity_id=111111
try:
	resp= req.getResponse(sessionkey)
	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,"taobao.opentrade.group.open");
add_param(pRequest,"item_id","1233");
add_param(pRequest,"open_user_id","adfafa");
add_param(pRequest,"group_activity_id","111111");
pResponse = top_execute(pClient,pRequest,sessionKey);
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('taobao.opentrade.group.open', {
	'item_id':'1233',
	'open_user_id':'adfafa',
	'group_activity_id':'111111'
}, function(error, response) {
	if (!error) console.log(response);
	else console.log(error);
})

<opentrade_group_open_response>
    <result>
        <group_id>11</group_id>
        <expiration>3600</expiration>
        <goal>50</goal>
        <group_type>0</group_type>
    </result>
</opentrade_group_open_response>

{
    "opentrade_group_open_response":{
        "result":{
            "group_id":11,
            "expiration":3600,
            "goal":50,
            "group_type":0
        }
    }
}

<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"
	}
}