1，导入dtree文件
2.
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
+ request.getContextPath() + "/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<link rel="StyleSheet" href="dtree/dtree.css" type="text/css" />
<script type="text/javascript" src="dtree/dtree.js"></script>
</head>
<body>
<div class="dtree">
<p><a href="javascript: d.openAll();">全部展开</a> | <a href="javascript: d.closeAll();">全部关闭</a></p>
<script type="text/javascript">
d = new dTree('d');
d.add(0,-1,'往来类别','company/company','','main');
<c:forEach items="${treeList}" var="m">
d.add('${m.type}','${m.superType}','${m.typecode}','comUser/com?type=${m.type}','','main');
</c:forEach>
document.write(d);
</script>
</div>
</body>
</html>