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
  }
}