# 查询系统线路 - ListSystemLines #### 功能介绍 查询系统预置解析线路。 #### 调用方法 请参见[如何调用API](https://support.huaweicloud.com/api-dns/zh-cn_topic_0037134405.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-dns/dns_api_70000.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 /v2.1/system-lines 表1Query参数 | 参数 | 是否必选 | 参数类型 | 描述 | |:---|:---|:---|:---| | locale | 否 | String | **参数解释：** 指定显示语言。 **约束限制：** 不涉及。 **取值范围：** - zh-cn：中文 - en-us：英语 - es-us：西班牙语 - pt-br：葡萄牙语 **默认取值：** zh-cn | | limit | 否 | Integer | **参数解释：** 分页查询时配置每页返回的资源个数。 **约束限制：** 不涉及。 **取值范围：** 0\~1000。 **默认取值：** 1000 | | offset | 否 | Integer | **参数解释：** 分页查询起始偏移量，表示从偏移量的下一个资源开始查询。 **约束限制：** 与limit参数配合实现分页查询。 **取值范围：** 0\~2147483647。 **默认取值：** 0 | #### 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 | |:---|:---|:---| | lines | Array of [SystemLine] objects | **参数解释：** 线路列表。 该字段为数组，每个元素包含线路ID、父线路ID及名称。 | | metadata | [metadata] object | **参数解释：** 分页查询的元数据信息，包含满足查询条件的资源总数（total_count）等。 | 表3SystemLine | 参数 | 参数类型 | 描述 | |:---|:---|:---| | id | String | **参数解释：** 线路ID。 **取值范围：** 不涉及。 | | father_id | String | **参数解释：** 父线路ID。 **取值范围：** 不涉及。 | | name | String | **参数解释：** 线路名称。 **取值范围：** 不涉及。 | 表4metadata | 参数 | 参数类型 | 描述 | |:---|:---|:---| | total_count | Integer | **参数解释：** 满足查询条件的资源总数，不受分页（即limit、offset参数）影响。 **取值范围：** 不涉及。 | #### 请求示例 查询系统线路。 ``` GET https://{Endpoint}/v2.1/system-lines ``` #### 响应示例 **状态码：200** ``` { "lines" : [ { "id" : "default_view", "father_id" : "DEFAULT", "name" : "全网默认" }, { "id" : "AP", "father_id" : "REGION", "name" : "亚太地区" }, { "id" : "Dianxin", "father_id" : "ISP", "name" : "电信" }, { "id" : "Dianxin_Huabei", "father_id" : "Dianxin", "name" : "华北地区" }, { "id" : "Dianxin_Beijing", "father_id" : "Dianxin_Huabei", "name" : "北京" } ], "metadata" : { "total_count" : 5 } } ``` #### 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.dns.v2.region.DnsRegion; import com.huaweicloud.sdk.dns.v2.*; import com.huaweicloud.sdk.dns.v2.model.*; public class ListSystemLinesSolution { 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"); ICredential auth = new BasicCredentials() .withAk(ak) .withSk(sk); DnsClient client = DnsClient.newBuilder() .withCredential(auth) .withRegion(DnsRegion.valueOf("")) .build(); ListSystemLinesRequest request = new ListSystemLinesRequest(); try { ListSystemLinesResponse response = client.listSystemLines(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 huaweicloudsdkdns.v2.region.dns_region import DnsRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkdns.v2 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"] credentials = BasicCredentials(ak, sk) client = DnsClient.new_builder() \ .with_credentials(credentials) \ .with_region(DnsRegion.value_of("")) \ .build() try: request = ListSystemLinesRequest() response = client.list_system_lines(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" dns "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dns/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dns/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dns/v2/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") auth, err := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). SafeBuild() if err != nil { fmt.Println(err) return } hcClient, err := dns.DnsClientBuilder(). WithRegion(region.ValueOf("")). WithCredential(auth). SafeBuild() if err != nil { fmt.Println(err) return } client := dns.NewDnsClient(hcClient) request := &model.ListSystemLinesRequest{} response, err := client.ListSystemLines(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/DNS/sdk?api=ListSystemLines)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 | 查询系统线路响应。 | #### 错误码 请参见[错误码](https://support.huaweicloud.com/api-dns/ErrorCode.html)。