Java web应用中的Facebook集成

这里是连接facebook的主要连接类

How to solve error of getting same user information in login with Facebook for different user in my web application developed in Java?

public class FBConnection 
{
public static final String FB_APP_ID = "1729*******";
public static final String FB_APP_SECRET = "2c5******";
public static final String REDIRECT_URI = "http://example.com";
static String accessToken = "";

此方法提供了从facebook获取访问令牌的代码

How to solve error of getting same user information in login with Facebook for different user in my web application developed in Java?

public class FBConnection 
{
public static final String FB_APP_ID = "1729*******";
public static final String FB_APP_SECRET = "2c5******";
public static final String REDIRECT_URI = "http://example.com";
static String accessToken = "";

此方法将生成图形url以获取访问令牌

public String getFBAuthUrl() {
    String fbLoginUrl = "";
try {
         fbLoginUrl = "http://www.facebook.com/dialog/oauth?" + "client_id="
                + FBConnection.FB_APP_ID + "&redirect_uri="
                + URLEncoder.encode(FBConnection.REDIRECT_URI, "UTF-8")
                + "&scope=email,public_profile";
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return fbLoginUrl;
}

此方法通过从重定向url获取的代码获取访问令牌

public String getFBGraphUrl(String code) {
    String fbGraphUrl = "";
    try {
        fbGraphUrl = "https://graph.facebook.com/oauth/access_token?"
                + "client_id=" + FBConnection.FB_APP_ID + "&redirect_uri="
                + URLEncoder.encode(FBConnection.REDIRECT_URI, "UTF-8")
                + "&client_secret=" + FB_APP_SECRET + "&code=" + code;
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return fbGraphUrl;
}

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你能复制粘贴实际错误吗？1我可以在第一时间成功登录ie.user1。2同一时间，当我在另一台机器上用user2登录facebook时，它会给我user1的相同配置文件。