indexservlet.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.FirstLevelTitleDbOperation;
import JavaBean.FirstTitlePaging;
import JavaBean.Paging;

public class indexServlet 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");
		
		FirstTitlePaging pa = (FirstTitlePaging)request.getSession().getAttribute("pa");
		String page = null;
		if(pa == null) {
			pa = new FirstTitlePaging();
			page = "1";
			request.getSession().setAttribute("pa", pa);
		} else {
			page = request.getParameter("page");
			if(page == null) {
				page = "1";
			}
		}
		pa.setRowsPerPage(10);
		int n = Integer.parseInt(page);
		ArrayList lst = pa.getData(n);
		
		request.getSession().setAttribute("lst",lst);
		request.getSession().setAttribute("currentPage", pa.getCurrentPage());
		request.getSession().setAttribute("totalPage", pa.getTotalPage());
		RequestDispatcher redis = request.getRequestDispatcher("../showFirst.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);
	
	}

}