TaobaoClient client = new DefaultTaobaoClient(url, appkey, secret);
AlitripRentcarBtbCityQueryRequest req = new AlitripRentcarBtbCityQueryRequest();
AlitripRentcarBtbCityQueryRequest.RentCarB2bCityInfoReq obj1 = new AlitripRentcarBtbCityQueryRequest.RentCarB2bCityInfoReq();
obj1.setTraceId("2147b72e16691938918672871ef815");
obj1.setExts("{\"key\":\"value\"}");
obj1.setChannelId("80001");
req.setRentCarB2bCityInfoReq(obj1);
AlitripRentcarBtbCityQueryResponse rsp = client.execute(req);
System.out.println(rsp.getBody());

ITopClient client = new DefaultTopClient(url, appkey, secret);
AlitripRentcarBtbCityQueryRequest req = new AlitripRentcarBtbCityQueryRequest();
AlitripRentcarBtbCityQueryRequest.RentCarB2bCityInfoReqDomain obj1 = new AlitripRentcarBtbCityQueryRequest.RentCarB2bCityInfoReqDomain();
obj1.TraceId = "2147b72e16691938918672871ef815";
obj1.Exts = "{\"key\":\"value\"}";
obj1.ChannelId = "80001";
req.RentCarB2bCityInfoReq_ = obj1;
AlitripRentcarBtbCityQueryResponse rsp = client.Execute(req);
Console.WriteLine(rsp.Body);

$c = new TopClient;
$c->appkey = $appkey;
$c->secretKey = $secret;
$req = new AlitripRentcarBtbCityQueryRequest;
$rent_car_b2b_city_info_req = new RentCarB2bCityInfoReq;
$rent_car_b2b_city_info_req->trace_id="2147b72e16691938918672871ef815";
$rent_car_b2b_city_info_req->exts="{\"key\":\"value\"}";
$rent_car_b2b_city_info_req->channel_id="80001";
$req->setRentCarB2bCityInfoReq(json_encode($rent_car_b2b_city_info_req));
$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=alitrip.rentcar.btb.city.query' \
-d 'partner_id=apidoc' \
-d 'sign=ABEBE22FB5C9EA51D3B04F0DCD822976' \
-d 'sign_method=hmac' \
-d 'timestamp=2025-04-29+16%3A57%3A14' \
-d 'v=2.0' \
-d 'rent_car_b2b_city_info_req=null'

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

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

req.rent_car_b2b_city_info_req="数据结构示例JSON格式"
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,"alitrip.rentcar.btb.city.query");
add_param(pRequest,"rent_car_b2b_city_info_req","数据结构JSON示例");
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('alitrip.rentcar.btb.city.query', {
	'rent_car_b2b_city_info_req':'数据结构JSON示例'
}, function(error, response) {
	if (!error) console.log(response);
	else console.log(error);
})

<alitrip_rentcar_btb_city_query_response>
    <cities>
        <rent_car_city_basic_info>
            <city_name>漯河</city_name>
            <city_code>370200</city_code>
        </rent_car_city_basic_info>
    </cities>
    <successful>true</successful>
    <ret_code>1001</ret_code>
    <exts>{&quot;key&quot;:&quot;value&quot;}</exts>
    <ret_msg>错误信息</ret_msg>
</alitrip_rentcar_btb_city_query_response>

{
    "alitrip_rentcar_btb_city_query_response":{
        "cities":{
            "rent_car_city_basic_info":[
                {
                    "city_name":"漯河",
                    "city_code":"370200"
                }
            ]
        },
        "successful":true,
        "ret_code":"1001",
        "exts":"{\"key\":\"value\"}",
        "ret_msg":"错误信息"
    }
}

<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"
	}
}