addnewsservlet.java

新闻发布系统的雏形

package com.kjlm.servlet;

import java.io.IOException;

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

import com.kjlm.beans.News;
import com.kjlm.beans.NewsMgr;

/**
 * Servlet implementation class for Servlet: AddNewsServlet
 *
 */
 public class AddNewsServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
    /* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#HttpServlet()
	 */
	public AddNewsServlet() {
		super();
	}   	
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}  	
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		request.setCharacterEncoding("gbk");
		String title =request.getParameter("title");
		String content =request.getParameter("content");
		int categoryId =Integer.parseInt(request.getParameter("category"));
		News news = new News();
		news.setTitle(title);
		news.setContent(content);
		news.setCategoryId(categoryId);
		NewsMgr newsMgr = new NewsMgr();
		Boolean flag = newsMgr.exist(news);
		if(flag){
			response.sendRedirect("addnews.jsp");
		}else{
			newsMgr.insert(news);
			response.sendRedirect("addnewssuccess.jsp");
		}
	}   	  	    
}