带有服务帐户的Google Spreadsheet

问题描述

我想使用de java Google电子表格API访问Google云端硬盘上的电子表格.过去，我使用客户端登录方法登录，但现在不赞成使用此方法.现在，我正在尝试使用服务帐户进行身份验证，而无需与用户进行交互，因为该工具在后台运行，因此我需要实现自动化.但是我无法正常工作.这些是我的代码.

I want to access a spreadsheet on Google Drive by using de java Google spreadsheet API. In the past i used the client login method to login but this method is deprecated now.Now I'm trying to use a service account to getting authenticated without interaction with the user because the tool is running in the background i needs to be automated. But i can't get it working. These my code now.

    List<String> SCOPES_ARRAY = Arrays.asList(
            "https://www.googleapis.com/auth/drive.file",
            "https://www.googleapis.com/auth/userinfo.email",
            "https://www.googleapis.com/auth/userinfo.profile",
            "https://docs.google.com/feeds",
            "https://spreadsheets.google.com/feeds");
    credential = new GoogleCredential.Builder()
                .setTransport(transport)
                .setJsonFactory(jsonFactory)
                .setServiceAccountId(
                        "[email protected]")
                .setServiceAccountScopes(SCOPES_ARRAY)
                .setServiceAccountPrivateKeyFromP12File(p12)
                .setServiceAccountUser("[email protected]")
                .build();
    service = new SpreadsheetService("MonitorV3");
    service.setOAuth2Credentials(credential);

    SPREADSHEET_FEED_URL = new URL("https://spreadsheets.google.com/feeds/spreadsheets/private/full");

    worksheetFeed = service.getFeed(spreadsheet.getWorksheetFeedUrl(),
                    WorksheetFeed.class);

但是执行最后一行时，我得到了nullpointerexception.刷新令牌出了点问题.有人看到我在做什么错吗?

But i'm getting a nullpointerexception when executing the last line. something goes wrong with refresh token. Is there someone seeing what i'm doing wrong?

我制作了一个独立的简单应用程序，现在出现以下详细错误:

I made a standalone simple application and now I get following detailded error:

Exception in thread "main" com.google.gdata.util.AuthenticationException: Failed to refresh access token: 401 Unauthorized
at com.google.gdata.client.GoogleAuthTokenFactory$OAuth2Token.refreshToken(GoogleAuthTokenFactory.java:260)
at com.google.gdata.client.GoogleAuthTokenFactory.handleSessionExpiredException(GoogleAuthTokenFactory.java:702)
at com.google.gdata.client.GoogleService.handleSessionExpiredException(GoogleService.java:738)
at com.google.gdata.client.GoogleService.getFeed(GoogleService.java:649)
at com.google.gdata.client.Service.getFeed(Service.java:1017)
at JavaApplication20.printDocuments(JavaApplication20.java:50)
at main.main(main.java:35)

推荐答案

我通过使用以下代码解决了此问题:

I fixed this by using following code:

credential = new GoogleCredential.Builder()
            .setTransport(transport)
            .setJsonFactory(jsonFactory)
            .setServiceAccountId("[e-mail]")
            .setServiceAccountPrivateKeyFromP12File(p12)
            .setServiceAccountScopes(SCOPES_ARRAY).build();
            credential.refreshToken();

因此没有.setServiceAccountUser("[email protected]").现在它可以正常工作了.

So without the .setServiceAccountUser("[email protected]"). Now it's working without any errors.

这篇关于带有服务帐户的Google Spreadsheet的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！