Java 调用华为网管 iMaster NCE 北向接口详解-连界优站

内容目录

华为 iMaster NCE（Network Cloud Engine）是一款先进的网络管理系统，提供了丰富的北向接口（Northbound API），允许开发者通过编程方式管理网络设备和配置。本文将详细介绍如何使用 Java 调用 iMaster NCE 的北向接口，并提供一些常见的问题及其解决方案。

🌐 了解 iMaster NCE 北向接口

1. iMaster NCE 概述

iMaster NCE 是华为推出的一站式网络管理平台，支持多种网络设备和协议。北向接口提供了 RESTful API，允许开发者通过 HTTP/HTTPS 协议与 iMaster NCE 进行交互。

2. 北向接口的功能

设备管理：添加、删除、查询网络设备。
配置管理：下发配置、查询配置状态。
告警管理：获取告警信息、清除告警。
性能监控：获取设备性能数据。

🛠️ 环境准备

1. 安装 JDK

确保你的开发环境中已经安装了 JDK。你可以使用以下命令检查安装情况：

java -version

2. 创建 Maven 项目

使用 Maven 创建一个新的 Java 项目。你可以使用 IntelliJ IDEA 或 Eclipse 等 IDE 来创建项目。

3. 添加依赖

在 pom.xml 文件中添加必要的依赖，例如 Apache HttpClient 用于发送 HTTP 请求：

<dependencies>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.13</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.12.3</version>
    </dependency>
</dependencies>

🛠️ 调用 iMaster NCE 北向接口

1. 获取访问令牌

iMaster NCE 的北向接口通常需要访问令牌（Access Token）进行身份验证。你可以通过以下步骤获取访问令牌：

1.1 发送请求

使用 HttpClient 发送 POST 请求获取访问令牌：

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import com.fasterxml.jackson.databind.ObjectMapper;

public class NceClient {

    private static final String AUTH_URL = "https://<NCE_IP>/api/v1/auth/token";
    private static final String USERNAME = "your_username";
    private static final String PASSWORD = "your_password";

    public static void main(String[] args) {
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            HttpPost post = new HttpPost(AUTH_URL);
            post.setHeader("Content-Type", "application/json");

            ObjectMapper mapper = new ObjectMapper();
            String json = mapper.writeValueAsString(Map.of(
                "username", USERNAME,
                "password", PASSWORD
            ));

            post.setEntity(new StringEntity(json));

            CloseableHttpResponse response = httpClient.execute(post);
            HttpEntity entity = response.getEntity();
            String result = EntityUtils.toString(entity);

            System.out.println("Access Token: " + result);

            EntityUtils.consume(entity);
            response.close();
            httpClient.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

2. 查询设备列表

获取访问令牌后，你可以使用它来查询设备列表：

2.1 发送请求

使用 HttpClient 发送 GET 请求查询设备列表：

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class NceClient {

    private static final String DEVICE_URL = "https://<NCE_IP>/api/v1/devices";
    private static final String ACCESS_TOKEN = "your_access_token";

    public static void main(String[] args) {
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            HttpGet get = new HttpGet(DEVICE_URL);
            get.setHeader("Authorization", "Bearer " + ACCESS_TOKEN);

            CloseableHttpResponse response = httpClient.execute(get);
            HttpEntity entity = response.getEntity();
            String result = EntityUtils.toString(entity);

            System.out.println("Device List: " + result);

            EntityUtils.consume(entity);
            response.close();
            httpClient.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

3. 下发配置

你可以使用 iMaster NCE 的北向接口下发配置到网络设备：

3.1 发送请求

使用 HttpClient 发送 POST 请求下发配置：

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import com.fasterxml.jackson.databind.ObjectMapper;

public class NceClient {

    private static final String CONFIG_URL = "https://<NCE_IP>/api/v1/configs";
    private static final String ACCESS_TOKEN = "your_access_token";

    public static void main(String[] args) {
        try {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            HttpPost post = new HttpPost(CONFIG_URL);
            post.setHeader("Authorization", "Bearer " + ACCESS_TOKEN);
            post.setHeader("Content-Type", "application/json");

            ObjectMapper mapper = new ObjectMapper();
            String json = mapper.writeValueAsString(Map.of(
                "deviceId", "device_id",
                "config", "interface GigabitEthernet0/0/1\n ip address 192.168.1.1 255.255.255.0"
            ));

            post.setEntity(new StringEntity(json));

            CloseableHttpResponse response = httpClient.execute(post);
            HttpEntity entity = response.getEntity();
            String result = EntityUtils.toString(entity);

            System.out.println("Config Result: " + result);

            EntityUtils.consume(entity);
            response.close();
            httpClient.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}