composite.java

网络邮件系统

/*
 * This product includes software developed by the
 * Apache Software Foundation (http://www.apache.org/).
 */
package ch05.controller;

import java.io.*;
import java.util.Hashtable;

import javax.servlet.*;
import javax.servlet.http.*;

import ch05.*;
import ch05.module.*;

/**
 * 针对发邮件页面的Servlet
 * @author ShenYK
 * @version 1.0
 */
public class Composite extends HttpServlet
{
    public void doGet ( HttpServletRequest request, 
                        HttpServletResponse response )
        throws ServletException, IOException 
    {
        //设置提交表单的中文编码
        request.setCharacterEncoding("GBK");
        
        HttpSession mySession = request.getSession(true);
        
        //清空错误消息
        mySession.setAttribute("errMsg","");
        
        //是否非法进入本页面
        if ( mySession.getAttribute("username") == null )
        {
            response.sendRedirect("/ch05/login.jsp");
            return;
        }
        //是否进入默认页面
        if ( !request.getParameterNames().hasMoreElements() )
        {
            //设置session中的页面值域
            mySession.setAttribute(CommonConst.VIEWID_SENDBOXDETAIL, new Hashtable() );
            mySession.setAttribute("curPage","composite");
            response.sendRedirect("/ch05/composite.jsp");
            return;
        }
        
        //得到用户输入信息
        String sReceiver = request.getParameter("receiver");
        String sSubject  = request.getParameter("subject");
        String sContent = request.getParameter("content");
        String sMailOption = request.getParameter("mailOption");
        String sSaveTime = request.getParameter("saveTime");
        
        //如果用户是提交表单
        if ( sMailOption != null && sMailOption.length() > 0 )
        {
            //设置session中的页面值域
            mySession.setAttribute(CommonConst.VIEWID_SENDBOXDETAIL, new Hashtable() );
            //如果是发送邮件
            if ( sMailOption.equals("send") )
            {
                MComposite mComposite = new MComposite();
                boolean bSendResult = mComposite.sendMail( mySession, sReceiver, sSubject, sContent, sSaveTime );
                if ( bSendResult )
                {
                    response.sendRedirect("/ch05/sendSuccessful.jsp");
                }
                else
                {
                    response.sendRedirect("/ch05/composite.jsp");
                }
            }
            //如果是存储邮件
            else if ( sMailOption.equals("save") )
            {
                MComposite mComposite = new MComposite();
                boolean bSendResult = mComposite.saveMail( mySession, sReceiver, sSubject, sContent, sSaveTime );
                if ( bSendResult )
                {
                    response.sendRedirect("/ch05/saveSuccessful.jsp");
                }
                else
                {
                    response.sendRedirect("/ch05/composite.jsp");
                }
            }
        }
        //如果用户非法进入这个页面
        else
        {
            response.sendRedirect("/ch05/login.jsp");
        }
    }
    
    public void doPost ( HttpServletRequest request, 
                           HttpServletResponse response )
        throws ServletException, IOException 
    {
        doGet( request, response );
    }
}