selectsecondlevelservlet.java

新闻发布系统 jsp制作。可应用与毕业设计

package com.newsIssueSystem.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.newsIssueSystem.javaBean.*;
import com.newsIssueSystem.javaBean.FirstLevelTitle;

public class SelectSecondLevelServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public SelectSecondLevelServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * 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");
		SecondLevelTitle slt = new SecondLevelTitle();
		
		String count=slt.getCount();
		
//		当前页 
		String page = request.getParameter("page");
//		页大小
		String pageSize = request.getParameter("pageSize");
		
		page = (page==null ? "1":page);
		pageSize = (pageSize == null ? "7" : pageSize);
		
		//总页数
		int allpage = (new Integer(count) % new Integer(pageSize) !=0?new Integer(count)/new Integer(pageSize)+1:new Integer(count)/new Integer(pageSize) );
		
		List lst = slt.getSecondLevelTitle(new Integer(page), new Integer(pageSize));
		
		
		//把值传过去
		request.setAttribute("lst", lst);
		request.setAttribute("page", page);
		request.setAttribute("pageSize", pageSize);
		request.setAttribute("allpage", allpage);
		
		
		RequestDispatcher rd = request.getRequestDispatcher("displaySLT.jsp");
		rd.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 {

		doGet(request, response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}