registerservlet.java

mvc模式

package test.servlet;
/*
 * 处理login.html的请求的servlet设计
 */
import java.io.IOException;
//import java.sql.SQLException;

import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//import com.sun.org.apache.commons.digester.SetNextRule;
import test.entity.User;
import test.dao.*;
public class RegisterServlet extends HttpServlet implements Servlet
{
 public RegisterServlet ()
 {
  // TODO Auto-generated constructor stub

 }
 /*
  * (non-Javadoc)
  *
  * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest,
  * javax.servlet.http.HttpServletResponse)
  */
 @Override
 protected void doGet ( HttpServletRequest arg0, HttpServletResponse arg1 )
   throws ServletException, IOException
 {
	 doPost(arg0, arg1);
 }
 /*
  * (non-Javadoc)
  *
  * @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest,
  * javax.servlet.http.HttpServletResponse)
  */
 @Override
 protected void doPost ( HttpServletRequest request, HttpServletResponse response )
   throws ServletException, IOException
 {
  response.setContentType ( "text/html" );
  // 获取用户名和密码，封装进User对象...
  User user = new User();
  user.setName(request.getParameter ( "txt1username" ));
  user.setPassword(request.getParameter ( "txt1password" ));
  // 访问数据库
  UserDao userdao = new UserDao();
  request.getSession ( ).setAttribute ( "UserName", user.getName() );
  //若用户名用户名不存在，则注册并转向login_success.jsp;
  try{
  if(userdao.add(user)){
	  response.sendRedirect ( "register_success.jsp" );
  }
  else{
	  response.sendRedirect ( "register_failure.jsp" );
  }
  }catch( Exception e ){
	  e.printStackTrace ();
  }
 /**
  *
  */
 }
 private static final long serialVersionUID = 1L;
}