package Ajax;
import DAO.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class CheckId extends HttpServlet{
	public void init(ServletConfig config) throws ServletException{
		super.init(config);
	}//改改doGet
	public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException{
		response.setContentType("text/html;charset=gb2312");
		String yourId=request.getParameter("id");
		System.out.println("yourId="+yourId);
		DAO dao=new DAO();
		int a=0;
		if(dao.checkId(yourId)){
			a=1;
		}else if(!yourId.matches("[a-zA-Z0-9]{1,10}")){
   			a=2;
   		}else{
   			a=3;
   		}
	   	response.getWriter().print(a);
	}
	public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException{
		doGet(request,response);
	}
}