TaobaoClient client = new DefaultTaobaoClient(url, appkey, secret);
OmniitemItemGetRequest req = new OmniitemItemGetRequest();
req.setPageNo(1L);
req.setPageSize(20L);
req.setItemId(54321678112L);
req.setOuterId("omni_test_outer_id_1234");
OmniitemItemGetResponse rsp = client.execute(req, sessionKey);
System.out.println(rsp.getBody());

ITopClient client = new DefaultTopClient(url, appkey, secret);
OmniitemItemGetRequest req = new OmniitemItemGetRequest();
req.PageNo = 1L;
req.PageSize = 20L;
req.ItemId = 54321678112L;
req.OuterId = "omni_test_outer_id_1234";
OmniitemItemGetResponse rsp = client.Execute(req, sessionKey);
Console.WriteLine(rsp.Body);

$c = new TopClient;
$c->appkey = $appkey;
$c->secretKey = $secret;
$req = new OmniitemItemGetRequest;
$req->setPageNo("1");
$req->setPageSize("20");
$req->setItemId("54321678112");
$req->setOuterId("omni_test_outer_id_1234");
$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.omniitem.item.get' \
-d 'partner_id=apidoc' \
-d 'session=cd92533c-d537-47a3-b9fb-741e5aa45239' \
-d 'sign=228666DA8FE9ADC6D63AB8974C531862' \
-d 'sign_method=hmac' \
-d 'timestamp=2024-04-30+00%3A43%3A07' \
-d 'v=2.0' \
-d 'item_id=54321678112' \
-d 'outer_id=omni_test_outer_id_1234' \
-d 'page_no=1' \
-d 'page_size=20'

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

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

req.page_no=1
req.page_size=20
req.item_id=54321678112
req.outer_id="omni_test_outer_id_1234"
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.omniitem.item.get");
add_param(pRequest,"page_no","1");
add_param(pRequest,"page_size","20");
add_param(pRequest,"item_id","54321678112");
add_param(pRequest,"outer_id","omni_test_outer_id_1234");
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.omniitem.item.get', {
	'page_no':'1',
	'page_size':'20',
	'item_id':'54321678112',
	'outer_id':'omni_test_outer_id_1234'
}, function(error, response) {
	if (!error) console.log(response);
	else console.log(error);
})

<omniitem_item_get_response>
    <result>
        <message>msg</message>
        <total_count>1000</total_count>
        <datas>
            <light_item_do>
                <user_id>11111111</user_id>
                <item_id>54321678112</item_id>
                <operator>测试账号</operator>
                <cat_id>126518010</cat_id>
                <title>宝贝标题</title>
                <subtitle>冬季保暖</subtitle>
                <store_ids>
                    <number>storeIds</number>
                </store_ids>
                <price>100.00</price>
                <desc>门店商品描述</desc>
                <skus>
                    <item_light_publish_sku_dto>
                        <sku_id>12345</sku_id>
                        <price>100.00</price>
                        <pretium>100.00</pretium>
                        <sku_outer_id>sku12345</sku_outer_id>
                        <barcode>6936983800013</barcode>
                        <custom_code>暂未启用</custom_code>
                        <sku_images>
                            <string>sku关联图片url列表</string>
                        </sku_images>
                        <sale_props>
                            <item_light_publish_sale_prop_dto>
                                <pid>10016</pid>
                                <value>XL</value>
                            </item_light_publish_sale_prop_dto>
                        </sale_props>
                        <extend_attr>{}</extend_attr>
                    </item_light_publish_sku_dto>
                </skus>
                <pretium>100.00</pretium>
                <outer_id>12345</outer_id>
                <barcode>6936983800013</barcode>
                <images>
                    <item_light_publish_image_dto>
                        <url>i7/T1rfxpXcVhXXXH9QcZ_033150.jpg</url>
                    </item_light_publish_image_dto>
                </images>
                <extend_attr>{}</extend_attr>
            </light_item_do>
        </datas>
        <code>code</code>
    </result>
</omniitem_item_get_response>

{
    "omniitem_item_get_response":{
        "result":{
            "message":"msg",
            "total_count":1000,
            "datas":{
                "light_item_do":[
                    {
                        "user_id":11111111,
                        "item_id":54321678112,
                        "operator":"测试账号",
                        "cat_id":126518010,
                        "title":"宝贝标题",
                        "subtitle":"冬季保暖",
                        "store_ids":{
                            "number":[
                                storeIds
                            ]
                        },
                        "price":"100.00",
                        "desc":"门店商品描述",
                        "skus":{
                            "item_light_publish_sku_dto":[
                                {
                                    "sku_id":12345,
                                    "price":"100.00",
                                    "pretium":"100.00",
                                    "sku_outer_id":"sku12345",
                                    "barcode":"6936983800013",
                                    "custom_code":"暂未启用",
                                    "sku_images":{
                                        "string":[
                                            "sku关联图片url列表"
                                        ]
                                    },
                                    "sale_props":{
                                        "item_light_publish_sale_prop_dto":[
                                            {
                                                "pid":10016,
                                                "value":"XL"
                                            }
                                        ]
                                    },
                                    "extend_attr":"{}"
                                }
                            ]
                        },
                        "pretium":"100.00",
                        "outer_id":"12345",
                        "barcode":"6936983800013",
                        "images":{
                            "item_light_publish_image_dto":[
                                {
                                    "url":"i7\/T1rfxpXcVhXXXH9QcZ_033150.jpg"
                                }
                            ]
                        },
                        "extend_attr":"{}"
                    }
                ]
            },
            "code":"code"
        }
    }
}

<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"
	}
}