jsp文件的编译

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>

</head>
<body>
    <%     
        //out.write(session.toString()+"  "+session.isNew());
        if(session==null){
            out.write("session not creat");
        }
        else if(session.getAttribute("name")==null||session.getAttribute("name").equals("")){
            out.write("<a href='login.jsp'>登录</a>");
        }
        else{
            out.write(session.getAttribute("name")+"你好");
        }
    %>
    /
    <a href="index.jsp" onclick="logout()">注销</a>
    <script type="text/javascript">
        function logout(){
            <% 
                session.invalidate();
            %>
        }
    </script>
</body>
</html>
index.jsp