JSP페이지이동

1)스크립트 이용
<% if (디비결과값) { %>
      <script>location.href = "login.jsp"; </script>
<% } else { %>
      <script>alert('정보없음'); window.history.back(); </script>
<% } %>
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2)response.sendRedirect

<% if (a == null) {
          response.sendRedirect("admin.jsp");
     } else {
          response.sendRedirect("login.jsp");
     }
%>
------------------------------------------------------------------
3)forward

<% if (a == null) { %>
          <jsp:forward page="admin.jsp"/>
<% } else { %>
          <jsp:forward page="login.jsp"/>
<% } %>

------------------------------------------------------------------
4)meta 태그 이용

<META http-equiv=refresh content="0;url=admin.jsp">