savedraftservlet.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;

import com.lovo.po.Mail;
import com.lovo.po.MailVo;
import com.lovo.service.IMailBo;
import com.lovo.service.IMailBoImpl;
import com.lovo.service.IUserBo;
import com.lovo.service.IUserBoImpl;

public class SaveDraftServlet extends HttpServlet
{
	/** userBo接口，用于业务方法调用 */
	private IUserBo userBo = new IUserBoImpl();
	/** mailBo接口，用于业务方法调用 */
	private IMailBo mailBo = new IMailBoImpl();

	/**
	 * 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/html; charset=utf-8");
		/** 设置响应头，让浏览器不缓存信息 */
		response.setHeader("Cache-control", "no-cache");
		/** 获取现在是存新的草稿还是草稿的更新的指示信息 */
		HttpSession session = request.getSession();
		String flag = (String)session.getAttribute("isUpdate");
		/** 获取草稿所属userId */
		int userId = Integer.parseInt(request.getParameter("whoSended"));
		/** 获取邮件主题 */
		String mailTitle = request.getParameter("mailTitle");
		if(mailTitle.equals("")){mailTitle = "（无主题）";}
		/** 获取邮件内容 */
		String mailContent = request.getParameter("mailContent");
		/** 获取并处理收件人 */
		String temp = request.getParameter("whoReceive");
		String[] receives = temp.split(";");
		int whoReceive = userId;
		if(receives.length != 0)
		{
			int temp2 = userBo.isEmailNameExist(receives[0]);
			if(temp2 != -1)whoReceive = temp2;
		}
		/** 创建一个待发信件 */
		Mail mail = new Mail();
		/** 设置待发信件状态码 */
		mail.setMailStatus(Mail.DRAFT_MAIL);
		/** 设置待发信件标题 */
		mail.setMailTitle(mailTitle);
		/** 设置待发信件内容 */
		mail.setMailContent(mailContent);
		/** 设置待发信件所属用户 */
		mail.setUserId(userId);
		/** 设置待发信件的发件人 */
		mail.setWhoSended(userId);
		/** 设置待发信件的收件人 */
		mail.setWhoReceive(whoReceive);
		/**
		 * 如果要草稿已经存在，那么flag为true，则对草稿进行更新。
		 * 否则存为新草稿。
		 */
		if(flag != null && flag.equals("true"))
		{
			/** 更新草稿 */
			MailVo mailVo = (MailVo)session.getAttribute("currentMail");
			mail.setMailId(mailVo.getMailId());
			mailBo.updateMail(mail);
		}
		else
		{
			/** 保存新草稿 */
			mailBo.sendMail(mail);
		}
		/** 获得输出流 */
		PrintWriter writer = response.getWriter();
		/** 反馈操作信息 */
		writer.println("保存成功！");
		writer.close();
	}

	/**
	 * 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);
	}

}