新闻发布项目——Servlet类（doNews_readServlet ）

package bdqn.newsManageServlet.Servlet;

import java.io.IOException;
import java.io.PrintWriter;

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

import bdqn.newsManageServlet.Dao.commentDao;
import bdqn.newsManageServlet.Dao.Impl.commentDaoImpl;
import bdqn.newsManageServlet.entity.comment;

public class doNews_readServlet extends HttpServlet {

	/**
	 * 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;charset=utf-8");
		PrintWriter out = response.getWriter();
		//获取评论的用户名和密码
		request.setCharacterEncoding("utf-8");
		String user=request.getParameter("cauthor");
		String ip=request.getParameter("cip");
		String connect=request.getParameter("ccontent");
		int newsid=Integer.parseInt(request.getParameter("newsid"));
		
		//将评论信息添加到数据库中
		commentDao comdao=new commentDaoImpl();
		comment comm=new comment();
		comm.setCmmUser(user);
		comm.setIp(ip);
		comm.setCmmContent(connect);
		comm.setNewsID(newsid);
		int rel=comdao.addComment(comm);
		if(rel>0){
		request.getRequestDispatcher("/newspages/news_read.jsp?newsid="+newsid).forward(request, response);
		}else{
			out.print("<script>alert('添加失败！');location.href='newspages/news_read.jsp?newsid='"+newsid+";</script>");
		}
	}

	/**
	 * 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 occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}