Java 调用 Rest api 设置经典 Linux 虚拟机的实例启停

现象描述

用户可以通过 Rest API 设置经典 Linux 虚拟机实例的启停。在调用该 API 时需要通过 Azure Active Directory(下文简称 AAD) 获取 Token，但是因为中国 Azure 中通过 AAD 的 Application 获取到的 Token 无法操作经典 API，所以需要通过 Client ID 和管理员的用户名密码来获取 Token。

前提条件

创建一台 Linux 经典虚拟机。

示例代码

Java复制

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.*;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.X509Certificate;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import javax.net.ssl.*;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import org.codehaus.jackson.map.ObjectMapper;

//get Access token for Rest API
public void GetToken() {
ExecutorService service = Executors.newFixedThreadPool(1);
AuthenticationContext ac = new AuthenticationContext("https://login.chinacloudapi.cn/tenantID", true, service);
Future<AuthenticationResult> future = ac.acquireToken("https://management.core.chinacloudapi.cn/",  "1950a258-227b-4e31-a9cf-717495945fc2", "username", "password", null);
AuthenticationResult result = future.get();
String token = result.getAccessToken();
rest(token);
}

public static void rest(String accessToken) throws IOException{
URL url = new URL(String.format("https://management.core.chinacloudapi.cn/subID/services/hostedservices/{hostedservices}/deployments/{deployments}/roleinstances/{roleinstancesName}/Operations"));
HttpsURLConnection conn = (HttpsURLConnection)url.openConnection();
conn.setRequestProperty("x-ms-version", "2013-06-01");
conn.setRequestProperty("Authorization", "Bearer " + accessToken);
conn.setRequestProperty("Content-Type", "application/xml");

//StartRole
String roleInstance = new String("<StartRoleOperation xmlns=\"http://schemas.microsoft.com/windowsazure\" xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\">\n" + "<OperationType>StartRoleOperation</OperationType>\n" +                               "</StartRoleOperation>");
//ShutdownRole
String roleins = new String( "<ShutdownRoleOperation xmlns=\"http://schemas.microsoft.com/windowsazure\" xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\">" +"<OperationType>ShutdownRoleOperation</OperationType>" +                                           "<PostShutdownAction>StoppedDeallocated</PostShutdownAction>" +                                               "</ShutdownRoleOperation>");
byte[] data = roleInstance.getBytes();
conn.setDoOutput(true);
conn.setRequestMethod("POST");
if (data != null)
{
DataOutputStream requestStream = new DataOutputStream(conn.getOutputStream());
requestStream.write(data);
requestStream.flush();
requestStream.close();
}
String mess =  conn.getResponseMessage();
int code = conn.getResponseCode();
InputStream input = conn.getErrorStream();
if (input == null)
input = conn.getInputStream();
String response = null;
try (Scanner scanner = new Scanner(input)) {
scanner.useDelimiter("\\Z");
response = scanner.next();
scanner.close();
input.close();
}
}

参考链接

Virtual Machines (classic) REST API - Start Role