6、DAO工廠類：
package com.song.DAOFactory;
import com.song.DAO.RegisterDAO;
import com.song.Impl.RegisterImpl;
public class RegisterFactory{
public static RegisterDAO getRegisterDAOInstance(){
return new RegisterImpl();
}
}7、一個servlet實現控制：
package com.song.servlet;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.song.VO.RegisterBean;
import com.song.DAOFactory.RegisterFactory;
public class RegisterServlet extends HttpServlet{
public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException{
String username = req.getParameter("username");
String password = req.getParameter("password");
String email = req.getParameter("email");
RegisterBean rb = new RegisterBean();
rb.setUsername(username);
rb.setPassword(password);
rb.setEmail(email);
try{
RegisterFactory.getRegisterDAOInstance().insert(rb);
}catch(Exception e){
e.printStackTrace();
}
res.setContentType("text/html;charset=GBK");
RequestDispatcher rd = req.getRequestDispatcher("register/register.jsp");
rd.forward(req,res);
}
}8、JSP顯示：
<%@ page contentType="text/html; charset=gbk"%>
<html>
<head>
<title>DAO模式實現簡單註冊頁面</title>
</head>
<body>
<form action="/my/register" method="GET">
<center>
用戶名：<input type="text" name="username" /><br>
密 碼：<input type="password" name="password" /><br>
郵 箱：<input type="text" name="email" /><br>
<input type="submit" value="註冊" />
<input type="reset" value="重置" />
</center>
</form>
</body>
</html>
