signin.jsp

一个注册系统的源代码

<jsp:useBean id="signinchk" scope="session" class="signup.SignIn" />

<%

String userid = request.getParameter("userid");
String password = request.getParameter("password");
//    out.println(password);
if (userid==null || password==null)
{
	userid = (String)session.getAttribute("userid");
    password = (String)session.getAttribute("password");
}

if  (signinchk.SignIn(userid,password))
{
	session.setAttribute("userid", userid);
    session.setAttribute("password", password);

}else{
  out.println(" <center><font colcor=red>用户名或密码错误!</font></center>");
  %>
  <center><h3>登陆</h3>
  <form action="<%=request.getRequestURI()%> " method="post">
  用户:<input type="text" name="userid" size="10"><br>
  密码:<input type="password" name="password" size="10"><br>
  <input type="submit" value="login">  <input type="Reset" value="Reset">
  </form>
  </center>
  <% 
  return;
}
%>