您如何使用来自 Java 的服务帐户访问 Google Sheet？

Question

我正在尝试从服务帐户访问 Google Sheet（服务帐户可以访问 sheet）。但是我有一个问题，包括 official docs 在内的所有文档都指向使用自 1.7 以来不推荐使用的 GoogleCredential。弃用说你应该使用库 google-auth-library 而这就是我在做的事情：

val googleCredentials = ServiceAccountCredentials
      .fromStream(new FileInputStream(CREDENTIALS_FILE_PATH))
      .createScoped(SCOPES)
googleCredentials.refresh()

但是变量的类型是 GoogleCredentials 并且函数 Sheets.Builder 不接受它作为有效的 HttpRequestInitializer。所以我不得不想方设法使用已弃用的 class 和：

val token = googleCredentials.getAccessToken.getTokenValue
val credential = new GoogleCredential().setAccessToken(token)

通过此解决方法，我可以访问 Google Sheet，但我确信有一种不使用已弃用库的正确方法。

有谁知道正确的做法是什么？

将完整的代码片段留在这里作为参考。

package drivers
import java.io.FileInputStream
import java.util.Collections

import com.google.api.client.googleapis.auth.oauth2.GoogleCredential
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport
import com.google.api.client.json.jackson2.JacksonFactory
import com.google.api.services.sheets.v4.{Sheets, SheetsScopes}
import com.google.auth.oauth2.ServiceAccountCredentials
import com.typesafe.config.ConfigFactory

object TestDriver {

  def main(args: Array[String]): Unit = {
    val config = ConfigFactory.load()
    val spreadsheetId = config.getString("spreadsheetId")
    val CREDENTIALS_FILE_PATH = config.getString("google_application_credentials")

    val SCOPES = Collections.singletonList(SheetsScopes.SPREADSHEETS_READONLY)
    val JSON_FACTORY = JacksonFactory.getDefaultInstance
    val APPLICATION_NAME = "my-app"

    val googleCredentials = ServiceAccountCredentials
      .fromStream(new FileInputStream(CREDENTIALS_FILE_PATH))
      .createScoped(SCOPES)
    googleCredentials.refresh()

    val token = googleCredentials.getAccessToken.getTokenValue
    val credential = new GoogleCredential().setAccessToken(token)
    val httpTransport = GoogleNetHttpTransport.newTrustedTransport
    val service = new Sheets.Builder(httpTransport, JSON_FACTORY, credential)
      .setApplicationName(APPLICATION_NAME)
      .build()
    val range = "Sheet1!A1:D1"
    val response = service.spreadsheets().values().get(spreadsheetId, range).execute()
    val values = response.getValues
    values.forEach(println)
  }

Answer 1

信息混乱，Google Auth Library that is recommended to use 因为弃用包括 google-auth-library-oauth2 库
换句话说，你仍然可以使用GoogleCredential，并且仍然是documentation中推荐的方法：

import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
GoogleCredential credential = GoogleCredential.fromStream(new FileInputStream(CREDENTIALS_FILE_PATH))
    .createScoped(Collections.singleton(SCOPES));

或者，您也可以从 .p12 文件构建您的凭据：

GoogleCredential credential = new GoogleCredential.Builder()
    .setTransport(httpTransport)
    .setJsonFactory(JSON_FACTORY)
    .setServiceAccountId(emailAddress)
    .setServiceAccountPrivateKeyFromP12File(new File("MyProject.p12"))
    .setServiceAccountScopes(Collections.singleton(YOUR SCOPE))
    .build();

但是，如果您确实想使用 GoogleCredentials 并且在使用 HttpRequestInitializer 时遇到问题，您可以使用 HttpCredentialsAdapter

您如何使用来自 Java 的服务帐户访问 Google Sheet？

How do you access a Google Sheet with a service account from Java?

java

google-sheets-api