signinflowhandler.java~

来自「J2EE & Tomcat books published by hope」· JAVA~ 代码 · 共 59 行

/*

 */

package com.sun.j2ee.workflow.control.actions;

import java.util.HashMap;
import java.util.ArrayList;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import com.sun.j2ee.workflow.control.exceptions.WorkflowAppException;
import com.sun.j2ee.workflow.util.WebKeys;
import com.sun.j2ee.workflow.util.Debug;

import com.sun.j2ee.workflow.control.web.UserBean;

/**
 * SigninFlow Handler
 *
*/
public class SigninFlowHandler implements FlowHandler {


    public void doStart(HttpServletRequest request) {
    }

    public String processFlow(HttpServletRequest request) throws WorkflowAppException {
        Debug.println("SigninFlowHandler:processRequest");
        HttpSession session = request.getSession();
        UserBean user = getUserBean(session);
        String nextScreen = null;
        if (user.isLoggedIn()) {
            String targetScreen = (String)session.getAttribute(WebKeys.SigninTargetURL);
            if (targetScreen != null) return "TARGET_URL";
            else return "1";
        } else {
            return nextScreen = "2";
        }
    }

    public void doEnd(HttpServletRequest request) {

    }
    
    public UserBean getUserBean(HttpSession session) {
        UserBean user = (UserBean)
        session.getAttribute(WebKeys.UserBeanKey);
        if (user == null) {
            user = new UserBean();
            session.setAttribute(WebKeys.UserBeanKey, user);
        }
        return user;
    }

}