Ext.define('knowlTreeModel',{
        extend: 'Ext.data.Model',
        fields: [{
            name: 'id', type: 'string'
        },{
            name: 'text', type: 'string'
        }]
    });
    
    var knowlTreeStore = Ext.create('Ext.data.TreeStore',{
        model: 'knowlTreeModel',
        proxy: {
            type: 'ajax',
            url: 'knowlPoint.do?method=trunkTree'
        },
        reader: {
            type: 'json'
        },
        root: {
            id: 'rootNode',
            text: '根节点',
            expanded: false
        }
    });
    
    var knowlTreePanel = Ext.create('Ext.tree.Panel',{
        width: 300,
        height: 450,
        store: knowlTreeStore,
        rootVisible: true,
        renderTo: 'knowlTreeDiv',
        autoScroll: true
    });
    
    knowlTreePanel.store.load();