TaobaoClient client = new DefaultTaobaoClient(url, appkey, secret);
AlibabaIcbuXiaomanVaLetterGetRequest req = new AlibabaIcbuXiaomanVaLetterGetRequest();
AlibabaIcbuXiaomanVaLetterGetRequest.ChannelTopApiRequest obj1 = new AlibabaIcbuXiaomanVaLetterGetRequest.ChannelTopApiRequest();
obj1.setContext("{\"area\":\"US\"}");
obj1.setUserId("1504669025");
obj1.setIdempotentId("idempotent_id");
req.setChannelTopApiRequest(obj1);
AlibabaIcbuXiaomanVaLetterGetResponse rsp = client.execute(req);
System.out.println(rsp.getBody());

ITopClient client = new DefaultTopClient(url, appkey, secret);
AlibabaIcbuXiaomanVaLetterGetRequest req = new AlibabaIcbuXiaomanVaLetterGetRequest();
AlibabaIcbuXiaomanVaLetterGetRequest.ChannelTopApiRequestDomain obj1 = new AlibabaIcbuXiaomanVaLetterGetRequest.ChannelTopApiRequestDomain();
obj1.Context = "{\"area\":\"US\"}";
obj1.UserId = "1504669025";
obj1.IdempotentId = "idempotent_id";
req.ChannelTopApiRequest_ = obj1;
AlibabaIcbuXiaomanVaLetterGetResponse rsp = client.Execute(req);
Console.WriteLine(rsp.Body);

$c = new TopClient;
$c->appkey = $appkey;
$c->secretKey = $secret;
$req = new AlibabaIcbuXiaomanVaLetterGetRequest;
$channel_top_api_request = new ChannelTopApiRequest;
$channel_top_api_request->context="{\"area\":\"US\"}";
$channel_top_api_request->user_id="1504669025";
$channel_top_api_request->idempotent_id="idempotent_id";
$req->setChannelTopApiRequest(json_encode($channel_top_api_request));
$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.icbu.xiaoman.va.letter.get' \
-d 'partner_id=apidoc' \
-d 'sign=A006ED6A751F99FDE13797DF5A62730B' \
-d 'sign_method=hmac' \
-d 'timestamp=2025-05-11+23%3A10%3A57' \
-d 'v=2.0' \
-d 'channel_top_api_request=null'

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

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

req.channel_top_api_request="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,"alibaba.icbu.xiaoman.va.letter.get");
add_param(pRequest,"channel_top_api_request","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('alibaba.icbu.xiaoman.va.letter.get', {
	'channel_top_api_request':'数据结构JSON示例'
}, function(error, response) {
	if (!error) console.log(response);
	else console.log(error);
})

<alibaba_icbu_xiaoman_va_letter_get_response>
    <data>
        <download_url>downloadUrl</download_url>
        <digest>digest</digest>
        <description>description</description>
    </data>
    <successful>true</successful>
    <errcode>0001</errcode>
    <message>message</message>
</alibaba_icbu_xiaoman_va_letter_get_response>

{
    "alibaba_icbu_xiaoman_va_letter_get_response":{
        "data":{
            "download_url":"downloadUrl",
            "digest":"digest",
            "description":"description"
        },
        "successful":true,
        "errcode":"0001",
        "message":"message"
    }
}

<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"
	}
}