升级Tomcat版本 apache-tomcat-7.0.77
diff --git a/tomcat-uidm/webapps/examples/servlets/chat/index.jsp b/tomcat-uidm/webapps/examples/servlets/chat/index.jsp
new file mode 100644
index 0000000..5a33fcd
--- /dev/null
+++ b/tomcat-uidm/webapps/examples/servlets/chat/index.jsp
@@ -0,0 +1,32 @@
+<%--

+ Licensed to the Apache Software Foundation (ASF) under one or more

+  contributor license agreements.  See the NOTICE file distributed with

+  this work for additional information regarding copyright ownership.

+  The ASF licenses this file to You under the Apache License, Version 2.0

+  (the "License"); you may not use this file except in compliance with

+  the License.  You may obtain a copy of the License at

+

+      http://www.apache.org/licenses/LICENSE-2.0

+

+  Unless required by applicable law or agreed to in writing, software

+  distributed under the License is distributed on an "AS IS" BASIS,

+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+  See the License for the specific language governing permissions and

+  limitations under the License.

+--%>

+<%@page contentType="text/html; charset=UTF-8" %>

+<% if (session.getAttribute("nickname") == null) {

+    response.sendRedirect("login.jsp");

+    return;

+}

+%>

+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">

+<html>

+<head>

+   <title>JSP Chat</title>

+</head>

+<frameset rows="1*,4*">

+  <frame name="post" src="post.jsp" scrolling="no" title="Post message">

+  <frame name="chat" src="chat" scrolling="yes" title="Chat">

+</frameset>

+</html>