
# 查询项目标签 - ListProjectTags
#### 功能介绍
- 查询租户在指定Project中实例类型的所有资源标签集合。
  
- 标签管理服务需要能够列出当前租户全部已使用的资源标签集合，为各服务配置资源标签和过滤实例时提供标签联想功能。
  
 
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-dc/zh-cn_topic_0055025302.html)。
#### 授权信息
账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限。
- 如果使用角色与策略授权，具体权限要求请参见[权限和授权项](https://support.huaweicloud.com/api-dc/dc_08_3000.html)。
- 如果使用身份策略授权，当前API调用无需身份策略权限。
 
#### URI
GET /v3/{project_id}/{resource_type}/tags
表1路径参数 
| 参数            | 是否必选 | 参数类型   | 描述                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|:---|:---|:---|:---|
| project_id    | 是    | String | 租户项目ID 最小长度：**0** 最大长度：**36**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| resource_type | 是    | String | 专线服务资源类型。取值范围： - dc-directconnect：专线物理连接   - dc-vgw：虚拟网关   - dc-vif：虚拟接口    |
   
#### 请求参数
无
#### 响应参数
**状态码：200**
表2响应Body参数 
| 参数         | 参数类型                                                                                | 描述    |
|:---|:---|:---|
| tags       | Array of [Tag] objects | 标签列表。 |
| request_id | String                                                                              | 请求ID  |
   
 表3Tag 
| 参数    | 参数类型   | 描述                                                         |
|:---|:---|:---|
| key   | String | 标签键，取值可以包含任意语种字母、数字、空格，以及_.:=+-@特殊字符，但首尾不能含有空格，不能以_sys_开头。 |
| value | String | 标签值，格式为取值可以包含任意语种字母、数字、空格，以及_.:/=+-@特殊字符。                  |
   
#### 请求示例
```
GET https://{dc_endpoint}/v3/ed28c294165741faaeccab26913122a1/dc-directconnect/tags
```
#### 响应示例
**状态码：200**
OK
```
{
  "tags" : [ {
    "key" : "department",
    "value" : "finance"
  } ],
  "request_id" : "9a4f4dfc4fb2fc101e65bba07d908535"
}
```
#### SDK代码示例
SDK代码示例如下。
- [Java]
  ```
  package com.huaweicloud.sdk.test;
  import com.huaweicloud.sdk.core.auth.ICredential;
  import com.huaweicloud.sdk.core.auth.BasicCredentials;
  import com.huaweicloud.sdk.core.exception.ConnectionException;
  import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
  import com.huaweicloud.sdk.core.exception.ServiceResponseException;
  import com.huaweicloud.sdk.dc.v3.region.DcRegion;
  import com.huaweicloud.sdk.dc.v3.*;
  import com.huaweicloud.sdk.dc.v3.model.*;
  public class ListProjectTagsSolution {
      public static void main(String[] args) {
          // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
          // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
          String ak = System.getenv("CLOUD_SDK_AK");
          String sk = System.getenv("CLOUD_SDK_SK");
          String projectId = "{project_id}";
          ICredential auth = new BasicCredentials()
                  .withProjectId(projectId)
                  .withAk(ak)
                  .withSk(sk);
          DcClient client = DcClient.newBuilder()
                  .withCredential(auth)
                  .withRegion(DcRegion.valueOf("<YOUR REGION>"))
                  .build();
          ListProjectTagsRequest request = new ListProjectTagsRequest();
          request.withResourceType(ListProjectTagsRequest.ResourceTypeEnum.fromValue("{resource_type}"));
          try {
              ListProjectTagsResponse response = client.listProjectTags(request);
              System.out.println(response.toString());
          } catch (ConnectionException e) {
              e.printStackTrace();
          } catch (RequestTimeoutException e) {
              e.printStackTrace();
          } catch (ServiceResponseException e) {
              e.printStackTrace();
              System.out.println(e.getHttpStatusCode());
              System.out.println(e.getRequestId());
              System.out.println(e.getErrorCode());
              System.out.println(e.getErrorMsg());
          }
      }
  }
  ```
- [Python]
  ```
  # coding: utf-8
  import os
  from huaweicloudsdkcore.auth.credentials import BasicCredentials
  from huaweicloudsdkdc.v3.region.dc_region import DcRegion
  from huaweicloudsdkcore.exceptions import exceptions
  from huaweicloudsdkdc.v3 import *
  if __name__ == "__main__":
      # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
      # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
      ak = os.environ["CLOUD_SDK_AK"]
      sk = os.environ["CLOUD_SDK_SK"]
      projectId = "{project_id}"
      credentials = BasicCredentials(ak, sk, projectId)
      client = DcClient.new_builder() \
          .with_credentials(credentials) \
          .with_region(DcRegion.value_of("<YOUR REGION>")) \
          .build()
      try:
          request = ListProjectTagsRequest()
          request.resource_type = "{resource_type}"
          response = client.list_project_tags(request)
          print(response)
      except exceptions.ClientRequestException as e:
          print(e.status_code)
          print(e.request_id)
          print(e.error_code)
          print(e.error_msg)
  ```
- [Go]
  ```
  package main
  import (
  "fmt"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
      dc "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dc/v3"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dc/v3/model"
      region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dc/v3/region"
  )
  func main() {
      // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
      // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
      ak := os.Getenv("CLOUD_SDK_AK")
      sk := os.Getenv("CLOUD_SDK_SK")
      projectId := "{project_id}"
      auth, err := basic.NewCredentialsBuilder().
          WithAk(ak).
          WithSk(sk).
          WithProjectId(projectId).
          SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      hcClient, err := dc.DcClientBuilder().
           WithRegion(region.ValueOf("<YOUR REGION>")).
           WithCredential(auth).
           SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      client := dc.NewDcClient(hcClient)
      request := &model.ListProjectTagsRequest{}
  request.ResourceType = model.GetListProjectTagsRequestResourceTypeEnum().RESOURCE_TYPE
  response, err := client.ListProjectTags(request)
  if err == nil {
          fmt.Printf("%+v\n", response)
      } else {
          fmt.Println(err)
      }
  }
  ```
- [更多]
  更多编程语言的SDK代码示例，请参见[API Explorer](https://console.huaweicloud.com/apiexplorer/#/openapi/DC/sdk?api=ListProjectTags)的代码示例页签，可生成自动对应的SDK代码示例。
#### 状态码
| 状态码 | 描述 |
|:---|:---|
| 200 | OK |
   
#### 错误码
请参见[错误码](https://support.huaweicloud.com/api-dc/ErrorCode.html)。
