removemailservlet.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 com.lovo.service.IMailBo;
import com.lovo.service.IMailBoImpl;

public class RemoveMailServlet extends HttpServlet
{
	/** 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/xml; charset=utf-8");
		/** 设置响应头，让浏览器不缓存信息 */
		response.setHeader("Cache-control", "no-cache");
		/** 获得所有要删除的邮件id */
		String mailIds = request.getParameter("mailIds");
		/** 获得是否要彻底删除邮件 */
		String thorough = request.getParameter("thorough");
		/** 获得发送请求的页面名称 */
		String whichPage = request.getParameter("whichPage");
		/** 将邮件id转为int数组 */
		String[] mailIdArray = mailIds.split(",");
		int[] ids = new int[mailIdArray.length];
		for(int i = 0; i < mailIdArray.length; i++)
		{
			ids[i] = Integer.parseInt(mailIdArray[i]);
		}
		String message = "";//存反馈信息
		if(thorough.equals("true"))
		{
			/** 彻底删除邮件 */
			mailBo.deleteMail(ids);
			message = "信件已彻底删除";
		}
		if(thorough.equals("false"))
		{
			/** 把邮件改为已删除状态 */
			mailBo.moveToDeleted(ids);
			message = "信件已删除";
		}
		/** 获得输出流 */
		PrintWriter writer = response.getWriter();
		/** 构建xml */
		writer.println("<?xml version='1.0' encoding='UTF-8'?>");
		writer.println("<update>");
		writer.println("<replyinfo>" + message + "</replyinfo>");
		writer.println("<whichPage>" + whichPage + "</whichPage>");
		writer.println("</update>");
		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);
	}

}