jsp中include html文件时引入的内容变成乱码了，jsp中的中文可以正常显示，在web.xml中添加一下内容后还是乱码
<jsp-config>
<jsp-property-group>
<description>
Special property group for JSP Configuration JSP
example.
</description>
<display-name>JSPConfiguration</display-name>
<url-pattern>*.jsp</url-pattern>
<el-ignored>true</el-ignored>
<page-encoding>UTF-8</page-encoding>
<scripting-invalid>false</scripting-invalid>
<include-prelude></include-prelude>
<include-coda></include-coda>
<description>
Special property group for JSP Configuration JSP
example.
</description>
<display-name>JSPConfiguration</display-name>
<url-pattern>*.html</url-pattern>
<el-ignored>true</el-ignored>
<page-encoding>UTF-8</page-encoding>
<scripting-invalid>false</scripting-invalid>
<include-prelude></include-prelude>
<include-coda></include-coda>
</jsp-property-group>
</jsp-config>
jsp文件内容
<%@ page language="java" import="java.util.*" contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>首页</title>
<meta name="content-type" content="text/html; charset=UTF-8">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<link href="lib/bootstrap/bootstrap.css" rel="stylesheet">
<script src="lib/jquery.min.js"></script>
<script src="lib/bootstrap/bootstrap.min.js"></script>
<script src="lib/icheck.js"></script>
<link href="css/main.css" rel="stylesheet">
<link href="css/blue.css" rel="stylesheet">
<link href="css/navigation.css" rel="stylesheet">
<link href="css/list.css" rel="stylesheet">
<link href="css/buttons.css" rel="stylesheet">
</head>
<body>
<jsp:include page="html/header.html"></jsp:include>
</body>
</html>
------解决思路----------------------
是不是编码的问题啊？也有可能是环境的问题