如何解决 { “错误” ： “invalid_grant”，“error_description” ： “错误的请求” } 问题在谷歌联系 API

Question

公共类GoogleContact{private static final JsonFactory JSON_FACTORY=new JacksonFactory（）；

static String clientId="";
static String clientSecret="";
static String token="";

public static void main(String[] arg)  {
    ContactsService  service = new ContactsService("contacts.googleapis.com");

    NetHttpTransport    httpTransport=null;
    try {
            httpTransport = GoogleNetHttpTransport.newTrustedTransport();
    } catch (GeneralSecurityException | IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    GoogleCredential credential = new GoogleCredential.Builder()
    .setTransport(httpTransport)
    .setJsonFactory(JSON_FACTORY)
    .setClientSecrets(clientId, clientSecret)
                .build().setRefreshToken(token);
    try {
        credential.refreshToken();
        service.setOAuth2Credentials(credential);
        service.useSsl();

    } catch (Exception   e) {
        e.printStackTrace();
    } 

}

}响应为：com.google.api.client.auth.oauth2.TokenResponseException:400错误请求｛“错误”：“无效_grant”，“错误_description”：“错误请求”｝位于com.googles.api.client.auth.oauth2.TokenResponse.Exception.from（TokenResposseExcepion.java:105）位于com.google.api.client.auth.oauth2.TokenRequest.execute（tokenrequestment.java:307）在com.google.api.client.auth.oauth2.Credential.ExecuterFreshToken（Credential.java:570）在com.google.api.client.googleapis.auth.oauth2.GoogleCredentials.ExecuteFreshTown（GoogleCredittial.java:247）在

Answer 1

我也有同样的例外。然后我生成了一个新的凭证。json文件并从令牌文件夹中删除旧令牌。然后我运行程序，它工作了，并生成了一个新的令牌。