setwriteletterloadinfoservlet.java

运用JSP/servlet/JavaBean 技术

package com.lovo.controller;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class SetWriteLetterLoadInfoServlet extends HttpServlet
{

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException
	{
		/** 设置响应文件类型及字符集编码 */
		response.setContentType("text/xml; charset=utf-8");
		/** 设置响应头，让浏览器不缓存信息 */
		response.setHeader("Cache-control", "no-cache");
		/** 获得设置指示信息 */
		String flag = request.getParameter("operation");
		/** 获得当前会话 */
		HttpSession session = request.getSession();
		/** 通过点击'写信'按钮加载writeLetter页面的话，将currentMail清空 */
		if(flag.equals("write"))
		{
			/** 清空当前查看的邮件 */
			session.removeAttribute("currentMail");
		}
		/** 通过草稿箱加载writeLetter页面的话，将加载信息放入会话 */
		if(flag.equals("draft"))
		{
			session.setAttribute("loadInfo", "draft");
		}
		/** 通过已发送加载writeLetter页面的话，将加载信息放入会话 */
		if(flag.equals("sended"))
		{
			session.setAttribute("loadInfo", "sended");
		}
		/** 通过收件箱、收信、已删除加载writeLetter页面的话，将加载信息放入会话 */
		if(flag.equals("other"))
		{
			session.setAttribute("loadInfo", "other");
		}
		if(flag.equals("contact"))
		{
			session.setAttribute("loadInfo", "contact");
			String names = request.getParameter("emailNames");
			String[] temp = names.split(",");
			String emailNames = "";
			for(int i = 0; i < temp.length; i++)
			{
				emailNames += temp[i] + ";";
			}
			session.setAttribute("receiveMan", emailNames);
		}
		session.removeAttribute("isUpdate");
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException
	{
		doGet(request, response);
	}

}