Gmail-API JAVA客户端发送电子邮件权限不足

Question

我正在尝试通过Gmail发送电子邮件。我几乎把所有的范围都给了这项服务。但我仍然收到错误消息，权限不足。

Exception in thread "main" com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
{
  "code" : 403,
  "errors" : [ {
    "domain" : "global",
    "message" : "Insufficient Permission",
    "reason" : "insufficientPermissions"
  } ],
  "message" : "Insufficient Permission"
}
    at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:145)
    at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113)
    at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:321)
    at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1056)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
    at GmailQuickstart.main(GmailQuickstart.java:133)

：运行失败

private static final List<String> SCOPES =
    Arrays.asList(GmailScopes.GMAIL_LABELS, GmailScopes.GMAIL_COMPOSE, GmailScopes.GMAIL_INSERT, GmailScopes.GMAIL_MODIFY, GmailScopes.GMAIL_READONLY, GmailScopes.MAIL_GOOGLE_COM);
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
 */
public static Credential authorize() throws IOException {
    // Load client secrets.
    InputStream in =
        GmailQuickstart.class.getResourceAsStream("/client_secret.json");
    GoogleClientSecrets clientSecrets =
        GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));
    // Build flow and trigger user authorization request.
    GoogleAuthorizationCodeFlow flow =
            new GoogleAuthorizationCodeFlow.Builder(
                    HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
            .setDataStoreFactory(DATA_STORE_FACTORY)
            .setAccessType("offline")
            .build();
    Credential credential = new AuthorizationCodeInstalledApp(
        flow, new LocalServerReceiver()).authorize("user");
    System.out.println(
            "Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
    return credential;
}

Answer 1

需要删除C:\Users\user.credentials因为我跑了很多次。第一次，我没有授予全部权利。

Answer 2

如果你看看这个答案。它应该能回答你的问题。我不能在这里张贴答案，因为张贴副本是违法的。这对我很有用。经过长时间的搜索才找到这个。如果它对你也有效，请告诉我。https://stackoverflow.com/a/39639526/1317559

Answer 3

删除C:Usersuser.credentials并根据需要更改范围。

SCOPES = Arrays.asList(GmailScopes.GMAIL_LABELS, GmailScopes.GMAIL_INSERT, GmailScopes.MAIL_GOOGLE_COM);

Answer 4

将"范围"从SheetsScopes.SPREADDSHEETS_READONLY更改为SheetsScope。SPREADDSCHEETS.

private static final List SCOPES=Arrays.asList（SheetsScopes.SPREADSHEETS）；

//private static final List<String> SCOPES = Arrays.asList(SheetsScopes.SPREADSHEETS_READONLY);