RestFB：使用Facebook应用程序获取用户访问令牌

问题描述

这是我所拥有的：

  static AccessToken accessToken = new DefaultFacebookClient（）。获取ExtendedAccessToken（<我的应用程序ID> ;，<我的应用秘密>）; 
 static FacebookClient client = new DefaultFacebookClient（）; 
 public static void main（String args []）{
 System.out.print（Enter Your Status：）; 
 BufferedReader br = new BufferedReader（new InputStreamReader（System.in））; 
 
 String status = null; 
 
 try {
 userName = br.readLine（）; 
 System.out.println（..........）; 
} catch（IOException ioe）{
 System.out.println（！）; 
 System.exit（1）; 
} 
 
 FacebookType publishMessageResponse = 
 client.publish（me / feed，FacebookType.class，
 Parameter.with（message，status））;因此，第一行获取令牌并将其存储为AccessToken类型，但对我来说有什么好处呢？下一行我需要提供访问令牌作为一个字符串，我不能转换它。任何帮助？
解决方案
除了Jack所说的AccessToken.getAccessToken（）返回accessToken的字符串值之外，您可以避免实例化 DefaultFacebookClient 通过扩展 DefaultFacebookClient 两次，如下所示：
  import com.restfb.DefaultFacebookClient; 
 
 public class LoggedInFacebookClient extends DefaultFacebookClient {
 
 public LoggedInFacebookClient（String appId，String appSecret）{
 AccessToken accessToken = this.obtainAppAccessToken（appId，appSecret）; 
 this.accessToken = accessToken.getAccessToken（）; 
} 
 
} 
  
 
This is what i have:
static AccessToken accessToken = new DefaultFacebookClient().obtainExtendedAccessToken("<my app id>", "<my app secret>");
static FacebookClient client = new DefaultFacebookClient();
public static void main(String args[]) {
    System.out.print("Enter Your Status: ");
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

    String status= null;

      try {
         userName = br.readLine();
         System.out.println("..........");
      } catch (IOException ioe) {
         System.out.println("!");
         System.exit(1);
      }

    FacebookType publishMessageResponse =
                client.publish("me/feed", FacebookType.class,
                Parameter.with("message", status));
So first line gets the token and stores it as type AccessToken but what good does that do to me because next line i need to provide the access token as a string and i can't convert it. Any Help?
 解决方案 
In addition to what Jack said about AccessToken.getAccessToken() returning the string value of accessToken, you can avoid instantiating DefaultFacebookClient twice by extending DefaultFacebookClient like this:
import com.restfb.DefaultFacebookClient;

public class LoggedInFacebookClient extends DefaultFacebookClient {

    public LoggedInFacebookClient(String appId, String appSecret) {
        AccessToken accessToken = this.obtainAppAccessToken(appId, appSecret);
        this.accessToken = accessToken.getAccessToken();
    }

}
                        
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