我在使用Java的Play Framework应用程序中使用Google Drive API库/代码。我在API部分的GCP项目中正确设置了凭据。我还在学习这些Google库以及我使用的代码是如何从我找到的一些帖子中学习的，所以我不明白为什么它会冻结而不确定如何修复它。
我有代码在本地运行应用程序时工作正常（http://localhost:9000）。但是，当我在服务器上运行时，它会在尝试保存凭据时冻结/锁定 - 它永远不会返回错误或消息。我等了15分钟没有回应。这是代码行：
credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
这是我正在使用的类：
package google;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets.Details;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import controllers.GlobalUtilities.StringControl;
import play.Configuration;
import play.Logger;
public class GoogleDrive {
/** Application name. */
private static final String APPLICATION_NAME = "PTP";
/** Directory to store user credentials for this application. */
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
".credentials/ptpgoogledrive");
/** Global instance of the {@link FileDataStoreFactory}. */
private static FileDataStoreFactory DATA_STORE_FACTORY;
/** Global instance of the JSON factory. */
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/** Global instance of the HTTP transport. */
private static HttpTransport HTTP_TRANSPORT;
/**
* Global instance of the scopes required by this quickstart.
*
* If modifying these scopes, delete your previously saved credentials at
* ~/.credentials/drive-java-quickstart
*/
// private static final List<String> SCOPES =
// Arrays.asList(DriveScopes.DRIVE_METADATA_READONLY);
private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE);
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
@SuppressWarnings("deprecation")
public static Credential authorize() throws IOException {
Credential credential = null;
String credentialsFileName = "";
try {
Logger.info("GoogleDrive: authorize: Starting...");
// Set up the credentials...
String clientID = Configuration.root().getString("google.drive.credentials.clientID");
String clientSecret = Configuration.root().getString("google.drive.credentials.clientSecret");
String authURI = Configuration.root().getString("google.drive.credentials.authURI");
String tokenURI = Configuration.root().getString("google.drive.credentials.tokenURI");
Logger.info("GoogleDrive: authorize: clientID = " + clientID);
Logger.info("GoogleDrive: authorize: clientSecret = " + clientSecret);
Logger.info("GoogleDrive: authorize: authURI = " + authURI);
Logger.info("GoogleDrive: authorize: tokenURI = " + tokenURI);
GoogleClientSecrets.Details details = new Details();
details.setClientId(clientID);
details.setClientSecret(clientSecret);
details.setAuthUri(authURI);
details.setTokenUri(tokenURI);
GoogleClientSecrets clientSecrets = new GoogleClientSecrets().setInstalled(details);
Logger.info("GoogleDrive: authorize: Found client secrets...");
if (clientSecrets == null) {
Logger.info("GoogleDrive: authorize: GoogleClientSecrets is null...");
}
// Build flow and trigger user authorization request...
Logger.info("GoogleDrive: authorize: Setting GoogleAuthorizationCodeFlow...");
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
clientSecrets, SCOPES).setDataStoreFactory(DATA_STORE_FACTORY).setAccessType("offline").build();
Logger.info("GoogleDrive: authorize: GoogleAuthorizationCodeFlow has been set...");
Logger.info("GoogleDrive: authorize: Setting credenital...");
credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
Logger.info("GoogleDrive: authorize: Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
} catch (IOException ex) {
System.out.println(ex.toString());
System.out.println("Could not find file " + credentialsFileName);
ex.printStackTrace();
}
Logger.info("GoogleDrive: authorize: Ending...");
return credential;
}
/**
* Build and return an authorized Drive client service.
*
* @return an authorized Drive client service
* @throws IOException
*/
public static Drive getDriveService() throws IOException {
Logger.info("GoogleDrive: getDriveService: Starting...");
Credential credential = null;
Drive googleDrive = null;
try {
credential = authorize();
googleDrive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
} catch (IOException ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return googleDrive;
}
public static String getPath() {
String s = GoogleDrive.class.getName();
int i = s.lastIndexOf(".");
if (i > -1)
s = s.substring(i + 1);
s = s + ".class";
System.out.println("Class Name: " + s);
Object testPath = GoogleDrive.class.getResource(s);
System.out.println("Current Path: " + testPath);
return "";
}
public static String uploadFile(java.io.File file) throws IOException {
String fileID = "";
try {
Logger.info("GoogleDrive: uploadFile: Starting File Upload...");
// Build a new authorized API client service.
Drive service = getDriveService();
Logger.info("GoogleDrive: uploadFile: Completed Drive Service...");
String fullFilePath = file.getAbsolutePath();
Logger.info("GoogleDrive: uploadFile: Full File Path: " + fullFilePath);
File fileMetadata = new File();
String fileName = StringControl.rightBack(fullFilePath, "\\");
String fileContentType = getContentType(fileName);
Logger.info("GoogleDrive: uploadFile: File Content Type: " + fileContentType);
fileMetadata.setName(fileName);
Logger.info("GoogleDrive: uploadFile: File Name = " + fileName);
// Set the folder...
String folderID = Configuration.root().getString("google.drive.folderid");
Logger.info("GoogleDrive: uploadFile: Folder ID = " + folderID);
fileMetadata.setParents(Collections.singletonList(folderID));
java.io.File filePath = new java.io.File(fullFilePath);
FileContent mediaContent = new FileContent(fileContentType, filePath);
File fileToUpload = service.files().create(fileMetadata, mediaContent).setFields("id, parents").execute();
fileID = fileToUpload.getId();
Logger.info("GoogleDrive: uploadFile: File ID: " + fileID);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
Logger.info("GoogleDrive: uploadFile: Ending File Upload...");
return fileID;
}
public static String getContentType(String filePath) throws Exception {
String type = "";
try {
Path path = Paths.get(filePath);
type = Files.probeContentType(path);
System.out.println(type);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return type;
}
}
我有一堆日志记录来确定代码冻结的位置，这是输出：
GoogleDrive: uploadFile: Starting File Upload...
GoogleDrive: getDriveService: Starting...
GoogleDrive: authorize: Starting...
GoogleDrive: authorize: clientID = (my client ID)
GoogleDrive: authorize: clientSecret = (my client secret)
GoogleDrive: authorize: authURI = https://accounts.google.com/o/oauth2/auth
GoogleDrive: authorize: tokenURI = https://accounts.google.com/o/oauth2/token
GoogleDrive: authorize: Found client secrets...
GoogleDrive: authorize: Setting GoogleAuthorizationCodeFlow...
GoogleDrive: authorize: GoogleAuthorizationCodeFlow has been set...
GoogleDrive: authorize: Setting credenital...
如您所见，它永远不会到达下一个日志记录输出：
Logger.info("GoogleDrive: authorize: Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
如果您能通过示例或修复上面的代码向我展示我所缺少的内容，感谢您。提前致谢。
我对此的回答是使用服务帐户而不是OAuth2。
我在Google Cloud Platform项目中创建了一个服务帐户：
https://console.cloud.google.com/iam-admin/serviceaccounts/
我使用了Compute Engine实例的默认帐户，并创建了所需的密钥，并将文件下载到我的机器上，并在上面的代码中引用。
上传文件没有问题。
这是我的最终代码：
package google;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;
import controllers.GlobalUtilities.StringControl;
import play.Configuration;
import play.Logger;
public class GoogleDrive {
/** Application name. */
private static final String APPLICATION_NAME = "PTP";
/** Directory to store user credentials for this application. */
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
".credentials/ptpgoogledrive");
/** Global instance of the {@link FileDataStoreFactory}. */
private static FileDataStoreFactory DATA_STORE_FACTORY;
/** Global instance of the JSON factory. */
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/** Global instance of the HTTP transport. */
private static HttpTransport HTTP_TRANSPORT;
/**
* Global instance of the scopes required by this quickstart.
*
* If modifying these scopes, delete your previously saved credentials at
* ~/.credentials/drive-java-quickstart
*/
private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE);
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
@SuppressWarnings("deprecation")
public static GoogleCredential authorize() throws IOException {
GoogleCredential credential = null;
String credentialsFileName = "";
try {
Logger.info("GoogleDrive: authorize: Starting...");
Logger.info("GoogleDrive: authorize: Getting credentialsFileName path...");
credentialsFileName = Configuration.root().getString("google.drive.credentials.file");
Logger.info("GoogleDrive: authorize: credentialsFileName = " + credentialsFileName);
Logger.info("GoogleDrive: authorize: Setting InputStream...");
InputStream in = GoogleDrive.class.getClassLoader().getResourceAsStream(credentialsFileName);
if (in == null) {
Logger.info("GoogleDrive: authorize: InputStream is null");
}
Logger.info("GoogleDrive: authorize: InputStream set...");
Logger.info("GoogleDrive: authorize: Setting credential...");
credential = GoogleCredential.fromStream(in, HTTP_TRANSPORT, JSON_FACTORY)
.createScoped(Collections.singleton(DriveScopes.DRIVE));
} catch (IOException ex) {
System.out.println(ex.toString());
System.out.println("Could not find file " + credentialsFileName);
ex.printStackTrace();
}
Logger.info("GoogleDrive: authorize: Ending...");
return credential;
}
/**
* Build and return an authorized Drive client service.
*
* @return an authorized Drive client service
* @throws IOException
*/
public static Drive getDriveService() throws IOException {
Logger.info("GoogleDrive: getDriveService: Starting...");
GoogleCredential credential = null;
Drive googleDrive = null;
try {
credential = authorize();
Logger.info("GoogleDrive: getDriveService: Credentials set...");
googleDrive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
} catch (IOException ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return googleDrive;
}
public static String getPath() {
String s = GoogleDrive.class.getName();
int i = s.lastIndexOf(".");
if (i > -1)
s = s.substring(i + 1);
s = s + ".class";
System.out.println("Class Name: " + s);
Object testPath = GoogleDrive.class.getResource(s);
System.out.println("Current Path: " + testPath);
return "";
}
public static String uploadFile(java.io.File file, String folderIDToFind) throws IOException {
String fileID = "";
String fileName = "";
try {
Logger.info("GoogleDrive: uploadFile: Starting File Upload...");
// Build a new authorized API client service.
Drive service = getDriveService();
Logger.info("GoogleDrive: uploadFile: Completed Drive Service...");
// Set the folder...
String folderID = Configuration.root().getString("google.drive.folderid");
Logger.info("GoogleDrive: uploadFile: Folder ID = " + folderID);
String folderIDToUse = getSubfolderID(service, folderID, folderIDToFind);
String fullFilePath = file.getAbsolutePath();
Logger.info("GoogleDrive: uploadFile: Full File Path: " + fullFilePath);
File fileMetadata = new File();
// Let's see what slashes exist to get the correct file name...
if (fullFilePath.contains("/")) {
fileName = StringControl.rightBack(fullFilePath, "/");
} else {
fileName = StringControl.rightBack(fullFilePath, "\\");
}
String fileContentType = getContentType(fileName);
Logger.info("GoogleDrive: uploadFile: File Content Type: " + fileContentType);
fileMetadata.setName(fileName);
Logger.info("GoogleDrive: uploadFile: File Name = " + fileName);
Logger.info("GoogleDrive: uploadFile: Setting the folder...");
fileMetadata.setParents(Collections.singletonList(folderIDToUse));
Logger.info("GoogleDrive: uploadFile: Folder set...");
// Team Drive settings...
fileMetadata.set("supportsTeamDrives", true);
java.io.File filePath = new java.io.File(fullFilePath);
FileContent mediaContent = new FileContent(fileContentType, filePath);
File fileToUpload = service.files().create(fileMetadata, mediaContent).setSupportsTeamDrives(true)
.setFields("id, parents").execute();
fileID = fileToUpload.getId();
Logger.info("GoogleDrive: uploadFile: File ID: " + fileID);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
Logger.info("GoogleDrive: uploadFile: Ending File Upload...");
return fileID;
}
public static String getContentType(String filePath) throws Exception {
String type = "";
try {
Path path = Paths.get(filePath);
type = Files.probeContentType(path);
System.out.println(type);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return type;
}
public static String getSubfolderID(Drive service, String parentFolderID, String folderKeyToGet) {
// We need to see if the folder exists based on the ID...
String folderID = "";
Boolean foundFolder = false;
FileList result = null;
File newFolder = null;
// Set the drive query...
String driveQuery = "mimeType='application/vnd.google-apps.folder' and '" + parentFolderID
+ "' in parents and name contains '" + folderKeyToGet + "' and trashed=false";
try {
result = service.files().list().setQ(driveQuery).execute();
} catch (IOException e) {
e.printStackTrace();
}
for (File folder : result.getFiles()) {
System.out.printf("Found folder: %s (%s)\n", folder.getName(), folder.getId());
foundFolder = true;
folderID = folder.getId();
}
if (foundFolder != true) {
// Need to create the folder...
File fileMetadata = new File();
fileMetadata.setName(folderKeyToGet);
fileMetadata.setTeamDriveId(parentFolderID);
fileMetadata.set("supportsTeamDrives", true);
fileMetadata.setMimeType("application/vnd.google-apps.folder");
fileMetadata.setParents(Collections.singletonList(parentFolderID));
try {
newFolder = service.files().create(fileMetadata).setSupportsTeamDrives(true).setFields("id, parents")
.execute();
} catch (IOException e) {
e.printStackTrace();
}
// Send back the folder ID...
folderID = newFolder.getId();
System.out.println("Folder ID: " + newFolder.getId());
}
return folderID;
}
}
我希望这有助于下一个人。