TreePanel的使用方法

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Ext笔记

EXT JavaScript CSS JSP Cache

TreePanelTest.html

Ext.onReady(function(){
var tree = new Ext.tree.TreePanel({
    animate : true,
    autoScroll : true,
    loader : new Ext.tree.TreeLoader({
      baseParams : {
       myName : "Dangzhao"
      },
      clearOnLoad : false ,
      dataUrl : "http://127.0.0.1:8080/CommonWeb/jsonData.jsp" ,
      listeners : {
       beforeload : function(){alert("beforeLoad")},
       load : function(){alert("load")},
       loadexception : function(){alert("loadexception")}
      },
      preloadChildren : false,
      requestMethod : "POST"
     }),
    el : 'tr',
    enableDD:true
   });
var root = new Ext.tree.AsyncTreeNode({
     text: 'Tree Root',
     draggable:false,
     id:'0'
    });
tree.setRootNode(root);
tree.render();
})

</script>
</head>

</body>
</html>

jsonData.jsp

<%@page import="java.util.*" %>
[{
id: 1,
text: 'A Folder Node',
leaf: false
},{
id: 2,
text: 'A leaf Node',
leaf: true
}]
<%
Enumeration enm=request.getHeaderNames();
while(enm.hasMoreElements()){
   String key=(String)enm.nextElement();
   System.out.println(key+":"+request.getHeader(key));
}
Map p=request.getParameterMap();
Iterator it=p.keySet().iterator();
while(it.hasNext()){
   String key=(String)it.next();
   System.out.println(key+":"+((String[])p.get(key))[0]);
}
%>

System.out Information

Accept:*/*
Accept-Language:zh-cn
Referer:file://E:\ext-2.0.2\ext-2.0.2\examples\grid\TreePanelTest.html
x-requested-with:XMLHttpRequest
Content-Type:application/x-www-form-urlencoded
Accept-Encoding:gzip, deflate
User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)
Host:127.0.0.1:7001
Content-Length:22
Connection:Keep-Alive
Cache-Control:no-cache
Cookie:2=1; 74=1; JSESSIONID=LvpgLBNZ!-832179795
node:0
myName:Dangzhao

Show 一下Ext Tree的魅力