据我所知,虽然 Java ADAL4J 库不支持该方法
public AuthenticationResult AcquireTokenByRefreshToken(
string refreshToken,
string clientId,
string resource
)
这在 .Net 库中受支持,这两种类型的库都是通过HTTP REST API实现的。
您可以参考官方文档中的刷新访问令牌
// Line breaks for legibility only
POST /{tenant}/oauth2/token HTTP/1.1
Host: https://login.microsoftonline.com
Content-Type: application/x-www-form-urlencoded
client_id=6731de76-14a6-49ae-97bc-6eba6914391e
&refresh_token=OAAABAAAAiL9Kn2Z27UubvWFPbm0gLWQJVzCTE9UkP3pSx1aXxUjq...
&grant_type=refresh_token
&resource=https%3A%2F%2Fservice.contoso.com%2F
&client_secret=JqQX2PNo9bpM0uEihUPzyrh // NOTE: Only required for web apps
我使用 Postman 测试通过 refreshToken 获取 accessToken 的请求,无需凭据供您参考:
对应的,我用下面的Java代码实现了请求:</p>
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import com.microsoft.aad.adal4j.AuthenticationContext;
import com.microsoft.aad.adal4j.AuthenticationResult;
public class AcquireTokenByRefreshToken {
static String tenantId = "***";
static String username = "***";
static String password = "***";
static String clientId = "***";
static String resource = "https://graph.windows.net";
static String userEmail = "***";
public static void main(String[] args) throws MalformedURLException, IOException {
AuthenticationContext authContext = null;
AuthenticationResult authResult = null;
ExecutorService service = null;
try {
service = Executors.newFixedThreadPool(1);
String url = "https://login.microsoftonline.com/" + tenantId + "/oauth2/authorize";
authContext = new AuthenticationContext(url, false, service);
Future<AuthenticationResult> future = authContext.acquireToken(resource, clientId, userEmail, password,
null);
authResult = future.get();
System.out.println("get access token: \n" + authResult.getAccessToken());
System.out.println("get refresh token: \n" + authResult.getRefreshToken());
} catch (Exception ex) {
ex.printStackTrace();
}
// get access token by refresh token
getToken(authResult.getRefreshToken());
}
public static void getToken(String refreshToken) throws IOException {
String encoding = "UTF-8";
String params = "client_id=" + clientId + "&refresh_token=" + refreshToken
+ "&grant_type=refresh_token&resource=https%3A%2F%2Fgraph.windows.net";
String path = "https://login.microsoftonline.com/" + tenantId + "/oauth2/token";
byte[] data = params.getBytes(encoding);
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", String.valueOf(data.length));
conn.setConnectTimeout(5 * 1000);
OutputStream outStream = conn.getOutputStream();
outStream.write(data);
outStream.flush();
outStream.close();
System.out.println(conn.getResponseCode());
System.out.println(conn.getResponseMessage());
BufferedReader br = null;
if (conn.getResponseCode() != 200) {
br = new BufferedReader(new InputStreamReader((conn.getErrorStream())));
} else {
br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
}
System.out.println("Response body : " + br.readLine());
}
}
控制台中打印的结果如下:
希望它可以帮助你。