Java 其他用户Facebook提要错误

我正在尝试使用代号为one的graph api获取facebook提要，但它仅适用于我自己的帐户，每当其他用户尝试使用我的应用获取他们的提要时，它就会抛出一个错误

下面是我的代码

public class Test {

    private Form current;
    private Resources theme;
    Form facebook;
    Toolbar tb;
    Image user;
    Label userLabel;
    Label username;
    Login loginfb;
    String clientId = "158093724691158";
    String redirectURI = "http://www.codenameone.com/";
    String clientSecret = "4f5b275ae702f7b6fde9bc50bfe3b5e3";
    Label proLabel;
    Label fname;
    Label fmail;
    Label fgender;
    Container container12;

    public void init(Object context) {
        theme = UIManager.initFirstTheme("/theme");

        // Enable Toolbar on all Forms by default
        Toolbar.setGlobalToolbar(true);

        // Pro only feature, uncomment if you have a pro subscription
        // Log.bindCrashProtection(true);
    }

    public void start() {
        if(current != null){
            current.show();
            return;
        }
        try{
        Splash spl = new Splash();
        spl.show();

        new java.util.Timer().schedule(
                new java.util.TimerTask() {
            @Override
            public void run() {
                facebook.show();
            }
        } , 4000);
        }catch(IOException e){
            e.printStackTrace();
        }
       facebook = new Form("Facebook", new BoxLayout(BoxLayout.Y_AXIS));
        tb = new Toolbar();
        facebook.setToolbar(tb);

       user = theme.getImage("user.png");
        userLabel = new Label(user);
        username = new Label("Visitor");
        Button facebooklogin = new Button("Login with Facebook");
        Button linked = new Button("Login with LinkedIn");
        //linked.setUIID("linkedButton");

        linked.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent evt) {

                          Oauth2 auth2 = new Oauth2("https://www.linkedin.com/oauth/v2/authorization?response_type=code", 
                "81lq3qpacjvkcu", 
                "https://www.codenameone.com","r_fullprofile%20r_emailaddress","https://www.linkedin.com/uas/oauth2/accessToken","vzwWfamZ3IUQsJQL");
        Oauth2.setBackToParent(true);
        auth2.showAuthentication(new ActionListener() {

            public void actionPerformed(ActionEvent evt) {
                if (evt.getSource() instanceof String) {
                    String token = (String) evt.getSource();
                    String expires = Oauth2.getExpires();

                    System.out.println("Token=" +token + "Expires in " +expires );

                } else {
                    Exception err = (Exception) evt.getSource();
                    err.printStackTrace();
                    Dialog.show("Error", "An error occurred while logging in: " + err, "OK", null);
                }
            }
        });

       }
        });

        facebooklogin.addActionListener((evt) -> {

              Login fb = FacebookConnect.getInstance();
                fb.setClientId(clientId);
                fb.setRedirectURI(redirectURI);
                fb.setClientSecret(clientSecret);
                fb.setScope("user_birthday,user_religion_politics,user_relationships,user_relationship_details,user_hometown,user_location,user_likes,user_education_history,user_work_history,user_website,user_events,user_photos,user_videos,user_friends,user_about_me,user_status,user_games_activity,user_tagged_places,user_posts,rsvp_event,email,read_insights,publish_actions,read_audience_network_insights,read_custom_friendlists,user_action.books,user_action.music,user_action.video,user_action.news,user_action.fitness,user_managed_groups,manage_pages,pages_manage_cta,pages_manage_instant_articles,pages_show_list,publish_pages,read_page_mailboxes,ads_management,ads_read,business_management,pages_messaging,pages_messaging_phone_number,pages_messaging_subscriptions,pages_messaging_payments,public_profile");
                loginfb = fb;
                fb.setCallback(new LoginListener(LoginListener.FACEBOOK));
                if(!fb.isUserLoggedIn()){
                    fb.doLogin();
                }else{
                    showFacebookUser(fb.getAccessToken().getToken());
                }
        });

         Container container1 = BoxLayout.encloseY(userLabel,username);
        container1.setUIID("container1");
        tb.addComponentToSideMenu(container1);
        tb.addCommandToSideMenu("Home", FontImage.createMaterial(FontImage.MATERIAL_HOME, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
         tb.addCommandToSideMenu("Shop by Category", FontImage.createMaterial(FontImage.MATERIAL_ADD_SHOPPING_CART, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
          tb.addCommandToSideMenu("Todays Deals", FontImage.createMaterial(FontImage.MATERIAL_LOCAL_OFFER, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
           tb.addCommandToSideMenu("Your Orders", FontImage.createMaterial(FontImage.MATERIAL_BOOKMARK_BORDER, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
            tb.addCommandToSideMenu("Your Wish List", FontImage.createMaterial(FontImage.MATERIAL_LIST, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
             tb.addCommandToSideMenu("Your Account", FontImage.createMaterial(FontImage.MATERIAL_ACCOUNT_BOX, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
              tb.addCommandToSideMenu("Gift Cards", FontImage.createMaterial(FontImage.MATERIAL_CARD_GIFTCARD, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
               tb.addCommandToSideMenu("Setting", FontImage.createMaterial(FontImage.MATERIAL_SETTINGS, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {
        });
                tb.addCommandToSideMenu("Logout", FontImage.createMaterial(FontImage.MATERIAL_BACKSPACE, UIManager.getInstance().getComponentStyle("TitleCommand")), (evt) -> {

        });


        Tabs tab = new Tabs();
        Style s = UIManager.getInstance().getComponentStyle("Tab");
        FontImage icon1 = FontImage.createMaterial(FontImage.MATERIAL_VPN_KEY, s);
        FontImage icon2 = FontImage.createMaterial(FontImage.MATERIAL_LIST, s);
        FontImage icon3 = FontImage.createMaterial(FontImage.MATERIAL_ACCOUNT_BOX, s);

        Container container11 = BoxLayout.encloseY(facebooklogin,linked);
container12 = BoxLayout.encloseY(new SpanLabel("Some text directly in the tab2"));


Image pro = theme.getImage("user.png");
proLabel = new Label(pro);
Label uname = new Label("Name: ");
fname = new Label("");
Label umail = new Label("Name: ");
fmail = new Label("");
Label ugender = new Label("Name: ");
fgender = new Label("");
Container profileContainer = TableLayout.encloseIn(2, uname,fname,umail,fmail,ugender,fgender);


Container container13 = BoxLayout.encloseY(proLabel,profileContainer);

        tab.addTab("Log In",icon1,container11 );
        tab.addTab("Wall",icon2, container12 );
        tab.addTab("User Profile",icon3, container13);

        facebook.add(tab);

    }

    public void showFacebookUser(String token){
        ConnectionRequest conn = new ConnectionRequest(){
            @Override
            protected void readResponse(InputStream input) throws IOException {
                JSONParser parser = new JSONParser();

                Map<String, Object> parsed = parser.parseJSON(new InputStreamReader(input, "UTF-8"));

                String email = null;
                   if(email == null){
                        email=" ";
                    }
              email = (String) parsed.get("email");
               String name = (String) parsed.get("name");
                String first_name = (String) parsed.get("first_name");
                String last_name = (String) parsed.get("last_name");
                  String gender = (String) parsed.get("gender");
                String image = (String) ((Map) ((Map) parsed.get("picture")).get("data")).get("url").toString();
                 ArrayList<String>  data_arr1= (ArrayList) ((Map) parsed.get("feed")).get("data");
                JSONArray array = new JSONArray(data_arr1);


                  Log.p("First NAme : " + first_name);
                Log.p("Last Name : " + last_name);
       Log.p("Email : " + email);
        Log.p("Full Name : " + name);
          Log.p("Gender : " + gender);
             Log.p("Picture : " +image);
         username.setText(name);
        userLabel.setIcon(URLImage.createToStorage((EncodedImage) user, "Small_"+image, image, URLImage.RESIZE_SCALE));     
      proLabel.setIcon(URLImage.createToStorage((EncodedImage) user, image, image, URLImage.RESIZE_SCALE)); 
        fname.setText(name);
        fmail.setText(email);
        fgender.setText(gender);

        ArrayList<String> arrayList = new ArrayList<>();
        try{
        JSONArray array2 = new JSONArray(array.toString());
        for(int i =0; i<array2.length() ; i++){
            JSONObject jsonobject = array2.getJSONObject(i);



                   String story = null;
                   if(story == null){
                        story=" ";
                    }
                    try {
                        story = jsonobject.getString("story");
                    } catch (Exception e) {
                        e.printStackTrace();
                    }



                    String msg = null;
                    if(msg == null){
                        msg=" ";
                    }
                    try {
                        msg = jsonobject.getString("message");

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




                    String full_picture = null;
                    if(full_picture == null){
                        full_picture=" ";
                    }
                    try{
                        full_picture = jsonobject.getString("full_picture");
                    }
                    catch(Exception e){
                        e.printStackTrace();
                    }



            Log.p(story);
            Log.p(msg);
            Log.p(full_picture);

            Image wallimage = theme.getImage("blank.jpg");
            Label wallimageLabel = new Label(wallimage);
            wallimageLabel.setIcon(URLImage.createToStorage((EncodedImage) wallimage, full_picture, full_picture, URLImage.RESIZE_SCALE));
            Label wallstory = new Label(story);

            Label wallmessage = new Label(msg);
            Container wallcontainer = BoxLayout.encloseY(wallmessage,wallstory,wallimageLabel);
            container12.add(wallcontainer);

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



        };
         conn.setPost(false);
        conn.setUrl("https://graph.facebook.com/v2.8/me");
        conn.addArgumentNoEncoding("access_token", token); //this statement is used to patch access token with url
        conn.addArgumentNoEncoding("fields", "email,name,first_name,last_name,gender,picture.width(512).height(512),feed{name,full_picture,message,story},posts");
        //above statement is used to provide permission through url so server send data with respect ot permissions.
        NetworkManager.getInstance().addToQueue(conn);



    }

    public void stop() {
        current = Display.getInstance().getCurrent();
        if(current instanceof Dialog) {
            ((Dialog)current).dispose();
            current = Display.getInstance().getCurrent();
        }
    }

    public void destroy() {
    }

    public class LoginListener extends LoginCallback {

        public static final int FACEBOOK = 0;

        private int loginType;

        public LoginListener(int loginType) {
            this.loginType = loginType;
        }

        public void loginSuccessful() {

            try {
                AccessToken token = loginfb.getAccessToken();
                if (loginType == FACEBOOK) {
                    showFacebookUser(token.getToken());
                } 

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

        }

        public void loginFailed(String errorMessage) {
            Dialog.show("Login Failed", errorMessage, "Ok", null);
        }
    }


}

---

我只想知道为什么此应用程序无法从其他用户帐户获取facebook订阅源。

感谢@jen的回复。您现在需要做的第一件事就是通过应用程序仪表板重置您的应用程序机密-因为您刚刚在此处公开了它，因此，阅读本文的每个人现在都有一个有效的应用程序访问令牌。你的应用程序请求的大量权限是否已经在审阅中获得批准？我已经获得了，是的，我知道，但是当我删除setScope（）方法时，应用程序将抛出相同的错误。在JSON响应中，它没有提要对象。

java.lang.NullPointerException
    at com.grv.test.Test$3.readResponse(Test.java:220)
    at com.codename1.io.ConnectionRequest.performOperation(ConnectionRequest.java:733)
    at com.codename1.io.NetworkManager$NetworkThread.run(NetworkManager.java:282)
    at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:176)
java.lang.NullPointerException
    at com.grv.test.Test$3.readResponse(Test.java:220)
    at com.codename1.io.ConnectionRequest.performOperation(ConnectionRequest.java:733)
    at com.codename1.io.NetworkManager$NetworkThread.run(NetworkManager.java:282)
    at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:176)