import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;
import java.io.IOException;
import java.io.PrintWriter;



@WebServlet("/ApplicantRegisterServlet")
public class ApplicantRegisterServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    //设置请求和响应编码
        request.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

    //获取请求参数
        String email = request.getParameter("email");
        String pwd = request.getParameter("pwd");

    //邮箱唯一性：注册使用的邮箱不能重复
        ApplicantDao appDao = new ApplicantDao();
        Boolean flag = appDao.isExistEmail(email);
        if (flag){
            out.println("<script type='text/javascript'>");
            out.println("alert('邮箱已被注册，请重新输入');");
            out.println("window.location = 'register.jsp'");
            out.println("</script>");
        }else {
            appDao.insertEmail(email,pwd);
            response.sendRedirect("login.jsp");
        }

    }
}