findsecondservlet.java

新闻发布系统

package Servlet;

import java.io.IOException;
import java.util.ArrayList;

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

import DBOperation.SecondLevelTitleDbOperation;

public class findSecondServlet 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 {

		response.setContentType("text/html");
		response.setCharacterEncoding("gbk");
		request.setCharacterEncoding("gbk");
		String id = request.getParameter("FirstTitleId");
		int parentTitleId = 0;
		if(id != null){
			parentTitleId = Integer.parseInt(id);
		}
		
		SecondLevelTitleDbOperation db = new SecondLevelTitleDbOperation();
		ArrayList lst = db.findSeondLevelTitleOnFirstLevelTitle(parentTitleId);
		db.Close();
		request.setAttribute("lst", lst);
		RequestDispatcher redis = request.getRequestDispatcher("showSecond.jsp");
		redis.forward(request, response);
	}

	/**
	 * 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 {

		this.doGet(request, response);
	}

}