listarticleservlet.java

基于MVC模式的文章采集检索系统

package com.liubin.servlet.article;

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

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

import com.liubin.model.Article;
import com.liubin.model.User;
import com.liubin.service.article.ArticleService;

public class ListArticleServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public ListArticleServlet() {
		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 {
		String pagenum =request.getParameter("pagenum");
		if(pagenum==null){
			pagenum="1";
		}
		String key=request.getParameter("key");
		request.setAttribute("key", key);
		String[]keys=null;
		if(key!=null){
			
			keys=key.split("[ ]+");
			User user=(User)(request.getSession().getAttribute("user"));
			ArticleService service=new ArticleService();
			List<Article>list_article=service.getArticleByKey(user, keys, pagenum);
			System.out.println("0000文章的总数是"+list_article.size());
			int count=service.getCount(user, keys);
			int pagecount=((count+5)-1)/5;
			request.setAttribute("list_article", list_article);
			request.setAttribute("pagecount", pagecount);
			request.setAttribute("pagenum", Integer.parseInt(pagenum));
			request.setAttribute("count", count);
			
		}
		request.getRequestDispatcher("article/search_normal.jsp").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);
	}

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

}