/*
 * @(#)BusinessBean.java 
 *
 * Copyright 2003 by SYNTC, All rights reserved.
 *
 * This software is the confidential and proprietary information of SYNTC.
 * ("Confidential Information").
 */
package cn.com.syntc.common.action;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.JspException;
import java.io.*;
import java.util.*;
import java.lang.reflect.*;

import cn.com.syntc.common.io.*;
import cn.com.syntc.common.util.*;

import cn.com.syntc.webapp.session.UserSession;
/**
 * 業(yè)務(wù)調(diào)用Servlet,用于web訪問<br>
 * @author wang yong
 * @version 1.4.2.4
 * 去掉fcode變量限制，采用request name 標(biāo)示動(dòng)作 <br>modify by yanger 2003-4-24 13:32
 */
public class ActionServlet extends HttpServlet {

  /**
   * 業(yè)務(wù)邏輯處理bean 類路徑
   */
  public static final String ACTION_BEAN_PATH = "cn.com.syntc.webapp.business.";

  /**
   * 業(yè)務(wù)邏輯處理bean 類名結(jié)尾字符串
   */
  public static final String ACTION_BEAN_NAME = "Bean";

  /** 登錄頁面 */
  public static final String LOGINPAGE = "/login.jsp";

  /**
   *  Servlet Context
   */
  private ServletContext application = null;

  /**
   *  取得Servlet Context
   */
  public void init(ServletConfig config) throws ServletException
  {
    this.application = config.getServletContext();
  }

  public void doGet(HttpServletRequest request, HttpServletResponse response)
                    throws ServletException, IOException {
  }

  public void doPost(HttpServletRequest request, HttpServletResponse response)
                     throws ServletException, IOException {
    doGet(request, response);
  }

  public void service(HttpServletRequest request, HttpServletResponse response)
                      throws ServletException, IOException {
    long beginTimeMillis = System.currentTimeMillis();//得到業(yè)務(wù)處理的開始時(shí)間

    HttpSession session = request.getSession();

    // 用戶信息
    UserSession USession = (UserSession)session.getAttribute("UserSession");

    // 用戶驗(yàn)證
    if (USession == null || USession.isGuest())
    {
      if(!"/Login.do".equals(request.getRequestURI()) &&
         !"/Logout.do".equals(request.getRequestURI()))
      {
        // 不允許游客登陸
        System.out.println( "未登錄或停滯時(shí)間過久，請重新登陸！");
        response.sendRedirect(LOGINPAGE);
        return;
      }
    } 

    System.out.println( "FrameWork：處理開始！" );

    /**
     * 構(gòu)造數(shù)據(jù)輸入類（轉(zhuǎn)換session和request）
     */
    Parameters parameters = new Parameters(request);

    /**
     * 創(chuàng)建對象，用于實(shí)例化業(yè)務(wù)Bean
     */
    String actionKey = RequestUtil.getServletNameNoExtend(request);
    String servletName = RequestUtil.getServletName(request);
    String BusinessBeanName = ACTION_BEAN_PATH + actionKey + ACTION_BEAN_NAME;

    System.out.println("FrameWork：實(shí)例化業(yè)務(wù)處理類【" + BusinessBeanName + "】");

    try{
      Class BusinessBeanClass = Class.forName(BusinessBeanName);
      Object BusinessBeanOjbect = BusinessBeanClass.newInstance();
      Method BMethod = null;
			Class[] paramClasses = null;
      Object[] paramObjects = null;

      paramClasses = new Class[3];
			paramClasses[0] = HttpServletRequest.class;
			paramClasses[1] = HttpServletResponse.class;
			paramClasses[2] = Parameters.class;

      paramObjects = new Object[3];
      paramObjects[0] = request;
      paramObjects[1] = response;
      paramObjects[2] = parameters;

      /* -------------------- 表單檢測處理 ------------------- */
      System.out.println("FrameWork：執(zhí)行validate方法");
      // 取得validate方法
      BMethod = BusinessBeanClass.getMethod("validate", paramClasses);

      // 執(zhí)行validate方法
      BMethod.invoke(BusinessBeanOjbect, paramObjects);

      /* -------------------- 業(yè)務(wù)邏輯處理 ------------------- */
      System.out.println("FrameWork：執(zhí)行execute方法");
      // 取得execute方法
      BMethod = BusinessBeanClass.getMethod("execute", paramClasses);

      // 執(zhí)行execute方法
      BMethod.invoke(BusinessBeanOjbect, paramObjects);

      /* -------------------- 數(shù)據(jù)輸出類的實(shí)類設(shè)置到session的屬性里面 --------------------- */
      session.removeAttribute("outparam");
      session.setAttribute("outparam", parameters);
    }
    catch(ClassNotFoundException CNFex){
      System.out.println("FrameWork：業(yè)務(wù)處理類實(shí)例化失敗1【" + BusinessBeanName + "】");
    }
    catch(InstantiationException Iex){
      System.out.println("FrameWork：業(yè)務(wù)處理類實(shí)例化失敗2【" + BusinessBeanName + "】");
    }
    catch(IllegalAccessException IAex){
      System.out.println("FrameWork：業(yè)務(wù)處理類實(shí)例化失敗3【" + BusinessBeanName+"】");
    }
    catch(NoSuchMethodException NSMex){
      System.out.println("FrameWork：業(yè)務(wù)處理類實(shí)例化失敗4【" + BusinessBeanName + "】");
    }
    catch(InvocationTargetException ITex){
      System.out.println("FrameWork：業(yè)務(wù)處理類實(shí)例化失敗5【" + BusinessBeanName+"】");
    }
    catch(CommonException Cex){
      System.out.println("FrameWork：業(yè)務(wù)處理類實(shí)例化失敗6【" + BusinessBeanName+"】");
    }

    long endTimeMillis = System.currentTimeMillis();
    System.out.println("FrameWork：業(yè)務(wù)處理耗時(shí) -- "+(endTimeMillis - beginTimeMillis)+"MSEL"); //得到業(yè)務(wù)處理的結(jié)束時(shí)間
    System.out.println("FrameWork：畫面遷移【" + (String)parameters.getParameters("results", "ForwardPage")+"】");
    response.sendRedirect(response.encodeURL((String)parameters.getParameters("results", "ForwardPage")));
  }
}