如何將 Google json 密鑰文件配置為 Spring 核心資源？

Question

I'm developing a Spring boot application in Java 8. I'm trying to get the Google credential json file as spring core Resource object but it is not working. 我已經調試並看到serviceAccountKey 是 null 因為 @Value("${google.service.account.key}") 只加載路徑而不是文件。 有人可以告訴我如何處理嗎？ 我真的不知道如何直接加載json密鑰文件。

這是代碼：

GoogleDriveServiceImpl類

@Service
public class GoogleDriveServiceImpl implements GoogleDriveService {
    @Value("${google.service.account.key}")
    private Resource serviceAccountKey;

private Drive createDrive() throws IOException, GeneralSecurityException {
    HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(ServiceAccountCredentials.fromStream(serviceAccountKey.getInputStream())
            .createScoped(DriveScopes.all()));
    final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();

    return new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
            .setApplicationName("external").build();
    }
}

Application.properties 文件

google.service.account.key=H:\\document\\googleKey\\***********.json
server.port=8867

Answer 1

After further research I have found a way to load JSON key file as spring core Resource object: Instead of use direct path, I'm using the classpath preflix in @Value and move the JSON key file into resource folder .

這是代碼：

GoogleDriveServiceImpl 類

@Service
public class GoogleDriveServiceImpl implements GoogleDriveService {

    // Move the JSON key file into resource/google
    @Value("classpath:google/********.json")
    private Resource serviceAccountKey;

private Drive createDrive() throws IOException, GeneralSecurityException {
    HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(ServiceAccountCredentials.fromStream(serviceAccountKey.getInputStream())
            .createScoped(DriveScopes.all()));
    final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();

    return new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, requestInitializer)
            .setApplicationName("external").build();
    }
}