java - 如何使用 Facebook4j 登录 facebook

Question

我正在开发一个照片查看器，它是一个 java 桌面应用程序，为了将它与 facebook 集成，我正在使用 Facebook4J 库。但是我不知道在哪里为用户提供用户名和密码....

我正在使用以下代码:

public static  Configuration createConfiguration() {
    ConfigurationBuilder confBuilder = new ConfigurationBuilder();

    confBuilder.setDebugEnabled(true);
    confBuilder.setOAuthAppId("************");
    confBuilder.setOAuthAppSecret("***************");
    confBuilder.setUseSSL(true);
    confBuilder.setJSONStoreEnabled(true);
    Configuration configuration = confBuilder.build();
    return configuration;
}
public static void main(String[] argv) throws FacebookException {
    Configuration configuration =  createConfiguration();
    FacebookFactory facebookFactory = new FacebookFactory(configuration );
    Facebook facebookClient = facebookFactory.getInstance();
    AccessToken accessToken = null;
    try{
        OAuthSupport oAuthSupport = new OAuthAuthorization(configuration );
        accessToken = oAuthSupport.getOAuthAppAccessToken();

    }catch (FacebookException e) {
        System.err.println("Error while creating access token " + e.getLocalizedMessage());
    }
    facebookClient.setOAuthAccessToken(accessToken);
//results in an error says {An active access token must be used to query information about the current user}
    facebookClient.postStatusMessage("Hello World from Facebook4J."); 
}

如何将用户名和密码传递给用户？

Answer 1

您应该从 facebook 检索 OAuthAppId。为此，请在 Facebook Developers 上创建一个应用程序然后点击“创建新应用”。填写表格，然后从代码中出现的页面复制粘贴 AppId 和 Appsecret。示例:

confBuilder.setOAuthAppId("YOUR APPID HERE");
confBuilder.setOAuthAppSecret("YOUR APPSECRET HERE");

要获取 AccessToken，您必须按照 here 所述构建登录流程