OAuth:在模拟器上连接雅虎时，retrieveAccessToken()异常

Question

当集成到yahoo

时出现上述错误

provider define

provider = new CommonsHttpOAuthProvider(
                "https://api.login.yahoo.com/oauth/v2/get_request_token",
                "https://api.login.yahoo.com/oauth/v2/get_token",
                "https://api.login.yahoo.com/oauth/v2/request_auth");

消费者和oauth_验证者

            consumer = new CommonsHttpOAuthConsumer(
                "ppp",
                "lll");
        consumer.setMessageSigner(new HmacSha1MessageSigner());
String oauth_verifier = uri
            .getQueryParameter(OAuth.OAUTH_VERIFIER);

从yahoo api访问令牌时显示错误:-

oauth.signpost.exception.OAuthCommunicationException: Communication with the service provider failed: null

在代码下面运行时，异常出现在上面:-

 provider.retrieveAccessToken(consumer, oauth_verifier);

Answer 1

我强烈建议不要使用路标，除非你有一个如何处理令牌刷新的计划。Signpost没有实现这一点的方法。我改用Scribe，它更容易使用。不幸的是，它也没有帮助Token刷新的方法，但我能够相当容易地编写一个助手方法。

我现在有雅虎API在Android上100%工作。如果你不能用路标找出它，并将切换到Scribe我将张贴我的代码。

---

这对我来说从头到尾都很有效。我还可以重复使用钥匙。棘手的事情，如果你不按顺序做一件事，它就会崩溃。顺便说一下，这是一个粗略的版本，我打算整理一下。60分钟后还得想办法更新令牌

Android清单

<activity
    android:name=".UpdaterActivity"
    android:label="@string/app_name"
    android:launchMode="singleInstance" >
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
    <intent-filter> 
        <action android:name="android.intent.action.VIEW" /> 
        <category android:name="android.intent.category.DEFAULT" /> 
        <category android:name="android.intent.category.BROWSABLE" /> 
        <data android:scheme="yfbwa" android:host="oauth"></data> 
    </intent-filter> 
</activity>

UpdaterActivity.java

private static final String CONSUMER_KEY = "";
private static final String CONSUMER_SECRET = "";
private static final String REQUEST_TOKEN_URL = "https://api.login.yahoo.com/oauth/v2/get_request_token";
private static final String ACCESS_TOKEN_URL = "https://api.login.yahoo.com/oauth/v2/get_token";
private static final String AUTHORIZE_WEBSITE_URL = "https://api.login.yahoo.com/oauth/v2/request_auth";
private static final String CALLBACK_URL = "yfbwa://oauth";
private OAuthConsumer consumer;
private OAuthProvider provider;
@Override
protected void onCreate(Bundle savedInstanceState) {
    consumer = new CommonsHttpOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET); 
    provider = new CommonsHttpOAuthProvider(REQUEST_TOKEN_URL, ACCESS_TOKEN_URL, AUTHORIZE_WEBSITE_URL);
    if(getIsAuthorized() == 0) {
        callOAuth();
    } else {
        makeRequest("http://fantasysports.yahooapis.com/fantasy/v2/users;use_login=1/games;game_keys=308/teams?format=json");
    }
}
private void callOAuth() { 
    String url = provider.retrieveRequestToken(consumer, CALLBACK_URL);
    this.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url))); 
}
@Override 
protected void onNewIntent(Intent intent) { 
    Uri data = intent.getData();
    String verifier = data.getQueryParameter(OAuth.OAUTH_VERIFIER);
    provider.retrieveAccessToken(consumer, URLDecoder.decode(verifier,"UTF-8"));
    writePrefs(consumer.getToken(), consumer.getTokenSecret());
    makeRequest("http://fantasysports.yahooapis.com/fantasy/v2/users;use_login=1/games;game_keys=308/teams?format=json");
}
private void makeRequest(String url) throws OAuthMessageSignerException, OAuthNotAuthorizedException, OAuthExpectationFailedException, OAuthCommunicationException, ClientProtocolException, IOException {
    String[] prefs = getPrefs();
    consumer.setTokenWithSecret(prefs[0], prefs[1]);
    HttpClient httpClient = new DefaultHttpClient();
    HttpGet request = new HttpGet(url);
    consumer.sign(request);
    HttpResponse response = httpClient.execute(request);
    String result = EntityUtils.toString(response.getEntity());
}
private void writePrefs(String token, String tokenSecret) {
    Editor prefsEditor = getSharedPreferences("ybfwa", MODE_PRIVATE).edit();
    prefsEditor.putString("token",token);
    prefsEditor.putString("tokenSecret",tokenSecret);
    prefsEditor.putInt("isAuthorized",1);
    prefsEditor.commit();
}
private String[] getPrefs() {
    String[] prefs = new String[2];
    SharedPreferences myPrefs = getSharedPreferences("ybfwa", MODE_PRIVATE);
    prefs[0] = myPrefs.getString("token", null);
    prefs[1] = myPrefs.getString("tokenSecret", null);
    return prefs;
}
private int getIsAuthorized() {
    SharedPreferences myPrefs = getSharedPreferences("ybfwa", MODE_PRIVATE);
    return myPrefs.getInt("isAuthorized", 0);
}