package?com.etest.action;

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?com.etest.dao.IUser;
import?com.etest.dao.impl.IUserImpl;

public?class?CheckUserNoAction?extends?HttpServlet?{

	/**
	?*?檢測學號是否被使用
	?*/
	public?CheckUserNoAction（）?{
		super（）;
	}

	/**
	?*?Destruction?of?the?servlet.?

	?*/
	public?void?destroy（）?{
		super.destroy（）;?//?Just?puts?“destroy“?string?in?log
		//?Put?your?code?here
	}

	/**
	?*?The?doGet?method?of?the?servlet.?

	?*
	?*?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?{
		String?u_no=request.getParameter（“u_no“）;
		IUser?iu=new?IUserImpl（）;
		PrintWriter?out=response.getWriter（）;
		if?（iu.checkUserByNo（u_no））?{
		????out.print（“false“）;//如果學號已被使用，向頁面返回“false“字符串。
		}else{
			out.print（“true“）;//如果學號未被使用，向頁面返回“true“字符串。
		}
	}

	/**
	?*?The?doPost?method?of?the?servlet.?

	?*
	?*?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（requestresponse）;
	}

	/**
	?*?Initialization?of?the?servlet.?

	?*
	?*?@throws?ServletException?if?an?error?occurs
	?*/
	public?void?init（）?throws?ServletException?{
		//?Put?your?code?here
	}

}