Question

我试图访问Googles Contacts API，但我的尝试在获得授权后失败了。从其他（网络）语言我习惯使用APIConsole和公共API密钥（授权）。

GoogleCredential credential = new GoogleCredential().setAccessToken("<<PublicAPIKey>>");
System.out.println(credential.refreshToken());          // false

这样我就无法刷新令牌并且不确定是否将公钥用作accesstoken ...而是尝试了service account：

private static final String USER_ACCOUNT_EMAIL = "xy@gmail.com";
private static final String SERVICE_ACCOUNT_EMAIL = "xy@developer.gserviceaccount.com";
private static final String SERVICE_ACCOUNT_PKCS12_FILE_PATH = "xy.p12";

public App() {
    Set<String> scopes = new HashSet<String>();
    scopes.add("https://www.google.com/m8/feeds");

    try {
        GoogleCredential credential = new GoogleCredential.Builder()
            .setTransport(new NetHttpTransport())
            .setJsonFactory(new JacksonFactory())
            .setServiceAccountId(SERVICE_ACCOUNT_EMAIL)
            .setServiceAccountScopes(scopes)
            .setServiceAccountUser(USER_ACCOUNT_EMAIL)
            .setServiceAccountPrivateKeyFromP12File(new java.io.File(SERVICE_ACCOUNT_PKCS12_FILE_PATH))
            .build();

        System.out.println(credential.refreshToken());
        //System.out.println(credential.getAccessToken());
    } catch (GeneralSecurityException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

这是我的例外：

com.google.api.client.auth.oauth2.TokenResponseException: 401 Unauthorized
        at com.google.api.client.auth.oauth2.TokenResponseException.from(TokenResponseException.java:105)
        at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:287)
        at com.google.api.client.auth.oauth2.TokenRequest.execute(TokenRequest.java:307)
        at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.executeRefreshToken(GoogleCredential.java:384)
        at com.google.api.client.auth.oauth2.Credential.refreshToken(Credential.java:489)
        at App.<init>(App.java:50)
        at App.main(App.java:29)

感谢您的提示！

Java Google联系人API访问服务帐户身份验证

0 个答案: