从远程服务器访问 Google Drive 电子表格

Question

我有客户端/服务器应用程序。服务器端必须访问我自己的 Google Drive 上的电子表格。我创建了一个测试类来尝试访问电子表格列表：

package com.eng.app;

import java.io.File;
import java.io.IOException;
import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.gdata.client.spreadsheet.SpreadsheetService;
import com.google.gdata.data.spreadsheet.SpreadsheetEntry;
import com.google.gdata.data.spreadsheet.SpreadsheetFeed;
import com.google.gdata.util.ServiceException;

public class TestGoogleCredential {

    public static void main(String[] args) throws IOException,
            InterruptedException, GeneralSecurityException, URISyntaxException, ServiceException {

        List<String> SCOPES = Arrays
                .asList("https://spreadsheets.google.com/feeds");

        final HttpTransport TRANSPORT = new NetHttpTransport();
        final JsonFactory JSON_FACTORY = new JacksonFactory();


        File cert = new File(Credential.class.getClassLoader()
                .getResource("<the_file>.p12").toURI());

        HttpTransport transport = new NetHttpTransport();
        JacksonFactory jsonFactory = new JacksonFactory();

        GoogleCredential credential = new GoogleCredential.Builder()
                .setTransport(transport)
                .setJsonFactory(jsonFactory)
                .setServiceAccountId(<email-address>)
                .setServiceAccountScopes(SCOPES)
                .setServiceAccountPrivateKeyFromP12File(cert).build();

        SpreadsheetService service = new SpreadsheetService("Inertia");
        service.setOAuth2Credentials(credential);


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

        // istantiate the feed to the spreadsheets
        SpreadsheetFeed feed = service.getFeed(SPREADSHEET_FEED_URL,SpreadsheetFeed.class);

        // the list of all spreadsheets
        List<SpreadsheetEntry> spreadsheets = feed.getEntries();


        System.out.println(feed.getEntries().size());

        // select the particular spreadsheet on Inertia Ontology
        for (SpreadsheetEntry spreadsheetEntry : spreadsheets) {
                System.out.println("founded");
        }

    }
}

但是当我运行代码时，大小为 0，并且没有打印出任何电子表格。

我还对一个程序进行了另一个测试，该程序使用我的 Google 凭据而不是 OAuth2 授权访问（在本地主机上）电子表格列表，它运行良好（它在我的 Google 云端硬盘上打印出我的所有电子表格）。

service.setUserCredentials(username, password); //My personal Google Account

注意：当我使用我的个人 Google 凭据（不是 OAuth2）在远程服务器上部署测试程序时，它已被 Google 出于安全策略的原因阻止。

请问有什么想法吗？

谢谢

Answer 1

尝试修改这个sn-p

GoogleCredential 凭证 = 新 GoogleCredential.Builder() .setTransport（运输） .setJsonFactory(jsonFactory) .setServiceAccountId("google-dev-console-email-address") .setServiceAccountUser("your-gmail") .setServiceAccountScopes(范围) .setServiceAccountPrivateKeyFromP12File(cert).build();