在JSF中处理会话，同时使用socialauth API进行登录

Question

我一直在使用JSF中的社交认证API，为了获得facebook的登录，我不知道是否正确地创建了一个会话。我已经在网上搜索了一些东西，正在做这件事。现在我发现了一些错误。

根据社交身份验证，我们首先需要调用一个函数，该函数有助于从Facebook获取身份验证URL，在该函数中，我需要创建一个会话，并使用用户登录到facebook时来自facebook的参数为其设置属性。

所以我的第一个视图页面将只包含一个调用相应函数的命令按钮。

            <h:form><h:commandButton value="submit" action="#{socialNetworkAuthentication.facebookAuthentication}"></h:commandButton></h:form>

然后调用的函数...

                 public String facebookAuthentication(){

    try{


           //Create an instance of SocialAuthConfgi object
           SocialAuthConfig config = SocialAuthConfig.getDefault();

 String propUrl="oauth_consumer.properties";


          //load configuration. By default load the configuration from oauth_consumer.properties.
          //You can also pass input stream, properties object or properties file name.
           config.load(propUrl);

          //Create an instance of SocialAuthManager and set config
          SocialAuthManager manager = new SocialAuthManager();
          manager.setSocialAuthConfig(config);

          //URL of YOUR application which will be called after authentication
           String successUrl = "http://chennaivolunteers.com/ChennaiVolunteers/faces/cv/employee-profile.xhtml";


        // get Provider URL to which you should redirect for authentication.
          // id can have values "facebook", "twitter", "yahoo" etc. or the OpenID URL
          String url = manager.getAuthenticationUrl("facebook", successUrl);

          // Store in session
          HttpServletRequest request=(HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
            HttpSession ses = request.getSession(true);

          ses.setAttribute("authManager", manager);
          System.out.println(url);
          FacesContext.getCurrentInstance().responseComplete();
       FacesContext.getCurrentInstance().getExternalContext().redirect(url);

        }

最后，我重定向到facebook给出的相应网址，在用户登录facebook后，它会自动移动到上面代码中提到的succesURL。

在我的successURL中，我只有一个outputtext。

                          <tr><td class="profile-head"><h:outputText id="name" value="#{employeeProfile.profileName}" /></td></tr>
            <tr><td class="content-black">
            <div class="padding-2"><h:outputText id="name" value="#{employeeProfile.profileName}" />

在支持bean中，我创建了一个会话来获取我之前设置的属性。

                  public class EmployeeProfile {

public String profileName;

public String getProfileName() throws Exception  {

HttpServletRequest request=(HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
    HttpSession ses = request.getSession(true);
    SocialAuthManager m = (SocialAuthManager)ses.getAttribute("authManager");        
    AuthProvider provider = m.connect(SocialAuthUtil.getRequestParametersMap(request));
    Profile p = provider.getUserProfile();
      String userName=p.getFirstName();
      System.out.println(userName);

    return userName;

}

public void setProfileName(String profileName) {
    this.profileName = profileName;
}

当我在控制台中打印用户名时，它确实发生了，但它不是这个支持bean的视图页面，已经赶上了两个异常，如下所示。

             1.  javax.faces.FacesException: Could not retrieve value of component with path : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /cv/employee-profile.xhtml][Class: javax.faces.component.html.HtmlOutputText,Id: name]}
           Caused by: javax.el.ELException: /cv/employee-profile.xhtml at line 133 and column 105 value="#{employeeProfile.profileName}": Error reading 'profileName' on type socialServlet.EmployeeProfile       


            2.javax.faces.FacesException: This is not the same SocailAuthManager object that was used for login.Please check if you have called getAuthenticationUrl() method before calling connect()
              Caused by: This is not the same SocailAuthManager object that was used for login.Please check if you have called getAuthenticationUrl() method before calling connect()

最后一个是社交身份验证API的内置异常，但我不认为这有任何问题，因为当我用servlet尝试它时，一切正常，我认为我在JSF会话中犯了一些错误。但是我不知道我哪里错了。

Answer 1

我的问题现在解决了..我犯的错误是，我再次调用connect()函数。现在我已经在构造器中完成了所有的工作。它工作得很好。

                public class EmployeeProfile {


public EmployeeProfile() throws Exception {
    // TODO Auto-generated constructor stub




        ExternalContext ectx = FacesContext.getCurrentInstance().getExternalContext();
        HttpServletRequest request = (HttpServletRequest)ectx.getRequest();
        HttpSession session = request.getSession(true);
         SocialAuthManager m = (SocialAuthManager)session.getAttribute("authManager"); 
         AuthProvider provider = m.connect(SocialAuthUtil.getRequestParametersMap(request));
         Profile p = provider.getUserProfile();
             String userName=p.getFirstName();    
              System.out.println(userName);
              setProfileName(userName);
              setBirthDate(p.getDob());
              setImageUrl(p.getProfileImageURL());
              p.getGender();


}