代理背后的 Google Drive API Java 客户端答案

【问题标题】：Google Drive API Java client behind proxy代理背后的 Google Drive API Java 客户端
【发布时间】：2021-07-15 12:47:37
【问题描述】：

我正在尝试使用Drive API v2 为 Drive API 编写 Java 客户端。但是，在我的代码中尝试执行 OAuth2 身份验证时出现错误。我认为这可能是代理问题，我试图通过在代码中设置代理来解决，但没有帮助。

This 是我参考的指南，用于编写我的程序。

这是我的代码的 sn-p：

public static Credential authorize() throws IOException {
            // Load client secrets.
            Credential credential = null;

            try{

            GoogleClientSecrets clientSecrets =
                GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(new FileInputStream("client_secret.json")));

            // Build flow and trigger user authorization request.

            GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                      HTTP_TRANSPORT, JSON_FACTORY, clientSecrets,
                      Collections.singleton(DriveScopes.DRIVE)).setDataStoreFactory(
                      DATA_STORE_FACTORY).build();

            credential = new AuthorizationCodeInstalledApp(
                flow, new LocalServerReceiver()).authorize("user");

            System.out.println(
                    "Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
            }catch(Exception e){
                e.printStackTrace(); System.exit(0);
                }
            return credential;

        }

        /**
         * Build and return an authorized Drive client service.
         * @return an authorized Drive client service
         * @throws IOException
         */
        public static Drive getDriveService() throws IOException {
            System.setProperty("http.proxyHost","10.3.100.207") ;
            System.setProperty("http.proxyPort", "8080") ;

            Credential credential = authorize();
            return new Drive.Builder(
                    HTTP_TRANSPORT, JSON_FACTORY, credential)
                    .setApplicationName(APPLICATION_NAME)
                    .build();
        }

这是堆栈跟踪：

2016-05-19 18:41:54.989:INFO::Logging to STDERR via org.mortbay.log.StdErrLog
2016-05-19 18:41:54.990:INFO::jetty-6.1.26
2016-05-19 18:41:55.001:INFO::Started SocketConnector@localhost:51307
Please open the following address in your browser:
  https://accounts.google.com/o/oauth2/auth?client_id=904439877486-uqiqmstss1bdcmhabt0gom905jo3hqsv.apps.googleusercontent.com&redirect_uri=http://localhost:51307/Callback&response_type=code&scope=https://www.googleapis.com/auth/drive
2016-05-19 18:42:28.496:INFO::Stopped SocketConnector@localhost:51307
java.net.UnknownHostException: accounts.google.com
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1105)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:999)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1283)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1258)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:77)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:981)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:283)
at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest.execute(GoogleAuthorizationCodeTokenRequest.java:158)
at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest.execute(GoogleAuthorizationCodeTokenRequest.java:79)
at com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp.authorize(AuthorizationCodeInstalledApp.java:82)
at DriveAPITest.authorize(DriveAPITest.java:84)
at DriveAPITest.getDriveService(DriveAPITest.java:104)
at DriveAPITest.main(DriveAPITest.java:116)
Exception in thread "main" java.net.UnknownHostException: www.googleapis.com
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1105)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:999)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:93)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:981)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
at DriveAPITest.main(DriveAPITest.java:121)

我在浏览器中打开了身份验证链接，并在批准权限后显示以下消息：

收到验证码。您现在可以关闭此窗口...

希望有人能指出正确的方向。

【问题讨论】：

"收到验证码。您现在可以关闭此窗口。"意味着你在做正确的事，你在正确的轨道上。您能否详细说明确切的问题是什么？并请包括错误日志。您当前的日志似乎没问题。
@noogui 我已经编辑了我的问题以包含完整的错误日志。请检查。打印此消息后我的程序退出。即使我无法理解确切的问题。
您现在可以尝试直接连接而不是代理连接来确认它确实是根本原因吗？
你能解决这个问题吗？
@noogui 不，我最终取消了库并使用 curl 直接调用 Rest API，我成功了。

标签： java google-drive-api

【解决方案1】：

你应该定义你的代理和 HttpTransport：

final Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("your address", port));
final HttpTransport httpTransport = new NetHttpTransport.Builder().setProxy(proxy).build();

// Build flow and trigger user authorization request.
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY, clientSecrets, SCOPES)
                                        .setDataStoreFactory(DATA_STORE_FACTORY)
                                        .setAccessType("offline")
                                        .build();

【讨论】：

【解决方案2】：

从this article 开始，我只需以这种方式设置 https 代理，就可以访问公司代理后面的 gsheets

System.setProperty("https.proxyHost", "myipproxyaddress");
System.setProperty("https.proxyPort", "myipproxyport");

HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);

以及this example 中描述的剩余代码如果我只设置 http（不是 https）代理，它不起作用

【讨论】：