import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.*;
import javax.servlet.http.*;
public class helloword3 extends HttpServlet{
//客户端用get方式访问页面时就是调用了doGet方法（直接在地址栏里面敲url地址）！
//客户提交表单，并且表单用post方式提交时，调用了doPost方式！
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doPost(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.setCharacterEncoding("utf-8");
//.在servlet中输出中文，如果采用PrintWriter方式，需要在调用getPrintWriter()之前调用
//setContentType或者 setCharacterEncoding；采用ServletOutputStream方式，不受此限。
PrintWriter pw = resp.getWriter();
pw.print("<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'><html xmlns='http://www.w3.org/1999/xhtml'><head><meta http-equiv='Content-Type' content='text/html; charset=utf-8'/><title>无标题文档</title></head><body>");
pw.print("<h1>用户登录</h1><br/>");
pw.print("<form id='form1' name='form1' method='post' action='login'>");
pw.print("用户名：<input type=password id='userName' name='userName'><br>");
pw.print("密码：<input type=password id='pwd' name='pwd'><br>");
pw.print("<input type=checkbox id='check' name='check'>两周之内不需要登录<br/>");
pw.print("<input type=submit value='提交'>");
pw.print("</from></body></html>");
}
}