前面介绍了ColumnTree：[http://www.cnblogs.com/hoojo/archive/2011/05/11/2043426.html](http://www.cnblogs.com/hoojo/archive/2011/05/11/2043426.html "http://www.cnblogs.com/hoojo/archive/2011/05/11/2043426.html") [http://www.cnblogs.com/hoojo/archive/2011/05/11/2043453.html](http://www.cnblogs.com/hoojo/archive/2011/05/11/2043453.html "http://www.cnblogs.com/hoojo/archive/2011/05/11/2043453.html") 加入CheckNodeColumnTree A、首先在AccountAction中添加如下代码： ~~~ private String jsonText; public String getJsonText() { return jsonText; } public String checkNodeColumnTreeData() throws Exception { jsonText = JSONUtil.serialize(results); //ServletActionContext.getResponse().getWriter().print(jsonText); return "showData"; } ~~~ 我们不直接使用Servlet的response方法，这样会使Action耦合Servlet的API。我们直接在Action中提供一个jsonText的属性，给该属性提供getter方法。然后当执行checkNodeColumnTreeData这个方法的时候，为jsonText赋值。等待请求成功，跳转到showData的视图中直接去取jsonText的值即可。 B、看看struts.xml中的配置 ~~~ <action name="account" class="accountAction"> <result type="redirect">account!show.action</result> <result name="show">/show.jsp</result> <result name="showData">/showData.jsp</result> <result name="tree" type="json"> <param name="excludeProperties">acc</param> <param name="contentType">text/html</param> </result> </action> ~~~ 就配置一个result就可以了，跳转到showData页面 C、下面看看showData页面 ~~~ <%@ page language="java" import="java.util.*" pageEncoding="UTF-8" contentType="text/text; charset=UTF-8"%> ${jsonText} ~~~ 代码比较简单，设置下页面才contentType、然后用el表达式取出jsonText的值即可。 D、下面看看CheckNodeColumnTree代码 Ext.hoo.tree.UserCheckNodeColumnTree.js ~~~ /** * @function CheckNode ColumnTree 多列信息的tree * @auhor: hoojo * @createDate: Aug 29, 2010 10:39:02 PM * @blog: blog.csdn.net/IBM_hoojo * @email: hoojo_@126.com */ Ext.ns("Ext.hoo.tree"); Ext.hoo.tree.UserCheckNodeColumnTree = Ext.extend(Ext.tree.ColumnTree, { constructor: function () { Ext.hoo.tree.UserCheckNodeColumnTree.superclass.constructor.call(this, { renderTo: "show", title: "远程数据", width: 600, hieght: 400, autoScroll: true, rootVisible: true, checkModel: 'cascade',//级联多选，如果不需要checkbox,该属性去掉 onlyLeafCheckable: false,//所有结点可选，如果不需要checkbox,该属性去掉 columns: [{ header: "编号", width: 100, dataIndex: "accountId" }, { header: "用户名称", width: 100, dataIndex: "username" }, { header: "密码", width: 100, dataIndex: "password" }, { header: "创建时间", width: 150, dataIndex: "createTime" }], loader: new Ext.tree.TreeLoader({ dataUrl: Ext.hoo.tree.UserCheckNodeColumnTree.TREE_DATA_URL, clearOnLoad: false, baseAttrs: { uiProvider: Ext.ux.ColumnTreeCheckNodeUI, leaf: true } }), root: new Ext.tree.AsyncTreeNode({ text: "用户基本信息", id: "root" }) }); } }); Ext.hoo.tree.UserCheckNodeColumnTree.TREE_DATA_URL = "account!checkNodeColumnTreeData.action"; Ext.onReady(function () { Ext.BLANK_IMAGE_URL = "ext2/resources/images/default/s.gif"; new Ext.hoo.tree.UserCheckNodeColumnTree(); }); ~~~ 在webroot目录的jslib中加入这个文件Ext.hoo.tree.UserCheckNodeColumnTree.js，然后导入到html中即可。 E、上面的代码用到了Ext.ux.ColumnTreeCheckNodeUI这个UI，我们需要加入这个UI文件Ext.tree.ColumnTreeCheckNodeUI.js，代码如下： ~~~ /* * Ext JS Library 2.0 * Copyright(c) 2006-2007, Ext JS, LLC. * licensing@extjs.com * * http://extjs.com/license */ Ext.tree.ColumnTree = Ext.extend(Ext.tree.TreePanel, { //lines:false, borderWidth: Ext.isBorderBox ? 0 : 2, // the combined left/right border for each cell cls:'x-column-tree', scrollOffset : 18, onRender : function(){ Ext.tree.ColumnTree.superclass.onRender.apply(this, arguments); this.headers = this.body.createChild( {cls:'x-tree-headers '},this.body.dom); var cols = this.columns, c; var totalWidth = 0; for(var i = 0, len = cols.length; i < len; i++){ c = cols[i]; totalWidth += c.width; this.headers.createChild({ cls:'x-tree-hd ' + (c.cls?c.cls+'-hd':''), cn: { cls:'x-tree-hd-text', html: c.header }, style:'width:'+(c.width-this.borderWidth)+'px;' }); } this.headers.createChild({ cls:'x-tree-hd ', cn: { html: '' }, style:'width:'+this.scrollOffset+'px;' }); totalWidth += this.scrollOffset; this.headers.createChild({cls:'x-clear'}); // prevent floats from wrapping when clipped this.headers.setWidth(totalWidth); totalWidth -= this.scrollOffset; this.innerCt.setWidth(totalWidth); } }); Ext.tree.ColumnTreeNodeUI = Ext.extend(Ext.tree.TreeNodeUI, { focus: Ext.emptyFn, // prevent odd scrolling behavior renderElements : function(n, a, targetNode, bulkRender){ this.indentMarkup = n.parentNode ? n.parentNode.ui.getChildIndent() : ''; var t = n.getOwnerTree(); var cols = t.columns; var bw = t.borderWidth; var c = cols[0]; var cb = typeof a.checked == 'boolean'; if(typeof this.checkModel != 'undefined'){ cb = (!this.onlyLeafCheckable || n.isLeaf()); } var href = a.href ? a.href : Ext.isGecko ? "" : "#"; var buf = ['<li class="x-tree-node"><div ext:tree-node-id="',n.id,'" class="x-tree-node-el x-tree-node-leaf x-unselectable ', a.cls,'" unselectable="on">', '<div class="x-tree-col" style="width:',c.width-bw,'px;">', '<span class="x-tree-node-indent">',this.indentMarkup,"</span>", '<img src="', this.emptyIcon, '" class="x-tree-ec-icon x-tree-elbow">', '<img src="', a.icon || this.emptyIcon, '" class="x-tree-node-icon',(a.icon ? " x-tree-node-inline-icon" : ""),(a.iconCls ? " "+a.iconCls : ""),'" unselectable="on">', cb ? ('<input class="x-tree-node-cb" type="checkbox" ' + (a.checked ? 'checked="checked" />' : '/>')) : '', '<a hidefocus="on" class="x-tree-node-anchor" href="',href,'" tabIndex="1" ', a.hrefTarget ? ' target="'+a.hrefTarget+'"' : "", '>', '<span unselectable="on">', n.text || (a[c.dataIndex]?(c.renderer ? c.renderer(a[c.dataIndex], n, a) : a[c.dataIndex]):''),"&nbsp;</span></a>", "</div>"]; for(var i = 1, len = cols.length; i < len; i++){ c = cols[i]; buf.push('<div class="x-tree-col ',(c.cls?c.cls:''),'" style="width:',c.width-bw,'px;">', '<div class="x-tree-col-text">',(a[c.dataIndex]?(c.renderer ? c.renderer(a[c.dataIndex], n, a) : a[c.dataIndex]):''),"&nbsp;</div>", "</div>"); } buf.push('<div class="x-clear"></div>', '</div>', '<ul class="x-tree-node-ct" style="display:none;"></ul>', "</li>"); if(bulkRender !== true && n.nextSibling && n.nextSibling.ui.getEl()){ this.wrap = Ext.DomHelper.insertHtml("beforeBegin",n.nextSibling.ui.getEl(), buf.join("")); }else{ this.wrap = Ext.DomHelper.insertHtml("beforeEnd", targetNode, buf.join("")); } this.elNode = this.wrap.childNodes[0]; this.ctNode = this.wrap.childNodes[1]; var cs = this.elNode.firstChild.childNodes; this.indentNode = cs[0]; this.ecNode = cs[1]; this.iconNode = cs[2]; var index = 3; if(cb){ this.checkbox = cs[3]; index++; } this.anchor = cs[index]; this.textNode = cs[index].firstChild; } }); Ext.ux.ColumnTreeCheckNodeUI = function() { //多选: 'multiple'(默认) //单选: 'single' //级联多选: 'cascade'(同时选父和子);'parentCascade'(选父);'childCascade'(选子) this.checkModel = 'multiple'; //only leaf can checked this.onlyLeafCheckable = false; Ext.ux.ColumnTreeCheckNodeUI.superclass.constructor.apply(this, arguments); }; Ext.extend(Ext.ux.ColumnTreeCheckNodeUI, Ext.tree.ColumnTreeNodeUI, { renderElements : function(n, a, targetNode, bulkRender){ var t = n.getOwnerTree(); this.checkModel = t.checkModel || this.checkModel; this.onlyLeafCheckable = t.onlyLeafCheckable || false; Ext.ux.ColumnTreeCheckNodeUI.superclass.renderElements.apply(this, arguments); var cb = (!this.onlyLeafCheckable || n.isLeaf()); if(cb){ Ext.fly(this.checkbox).on('click', this.check.createDelegate(this,[null])); } }, // private check : function(checked){ var n = this.node; var tree = n.getOwnerTree(); this.checkModel = tree.checkModel || this.checkModel; if( checked === null ) { checked = this.checkbox.checked; } else { this.checkbox.checked = checked; } n.attributes.checked = checked; tree.fireEvent('check', n, checked); if(!this.onlyLeafCheckable){ if(this.checkModel == 'cascade' || this.checkModel == 'parentCascade'){ var parentNode = n.parentNode; if(parentNode !== null) { this.parentCheck(parentNode,checked); } } if(this.checkModel == 'cascade' || this.checkModel == 'childCascade'){ if( !n.expanded && !n.childrenRendered ) { n.expand(false,false,this.childCheck); }else { this.childCheck(n); } } } else if(this.checkModel == 'single'){ var checkedNodes = tree.getChecked(); for(var i=0;i<checkedNodes.length;i++){ var node = checkedNodes[i]; if(node.id != n.id){ node.getUI().checkbox.checked = false; node.attributes.checked = false; tree.fireEvent('check', node, false); } } } }, // private childCheck : function(node){ var a = node.attributes; if(!a.leaf) { var cs = node.childNodes; var csui; for(var i = 0; i < cs.length; i++) { csui = cs[i].getUI(); if(csui.checkbox.checked ^ a.checked) csui.check(a.checked); } } }, // private parentCheck : function(node ,checked){ var checkbox = node.getUI().checkbox; if(typeof checkbox == 'undefined')return ; if(!(checked ^ checkbox.checked))return; if(!checked && this.childHasChecked(node))return; checkbox.checked = checked; node.attributes.checked = checked; node.getOwnerTree().fireEvent('check', node, checked); var parentNode = node.parentNode; if( parentNode !== null){ this.parentCheck(parentNode,checked); } }, // private childHasChecked : function(node){ var childNodes = node.childNodes; if(childNodes || childNodes.length>0){ for(var i=0;i<childNodes.length;i++){ if(childNodes[i].getUI().checkbox.checked) return true; } } return false; }, toggleCheck : function(value){ var cb = this.checkbox; if(cb){ var checked = (value === undefined ? !cb.checked : value); this.check(checked); } } }); ~~~ F、在html页面中导入这些js库即可运行示例 ~~~ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>UserCheckNodeColumnTree 示例</title> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <meta http-equiv="author" content="hoojo"/> <meta http-equiv="email" content="hoojo_@126.com"/> <meta http-equiv="ext-lib" content="verson 2.2"/> <meta http-equiv="blog" content="http://blog.csdn.net/IBM_hoojo"/> <meta http-equiv="blog" content="http://hoojo.cnblogs.com"/> <link rel="stylesheet" type="text/css" href="ext2/resources/css/ext-all.css" /> <link rel="stylesheet" type="text/css" href="jslib/column-tree.css" /> <script type="text/javascript" src="ext2/adapter/ext/ext-base.js"></script> <script type="text/javascript" src="ext2/ext-all.js"></script> <script type="text/javascript" src="ext2/build/locale/ext-lang-zh_CN-min.js"></script> <script type="text/javascript" src="jslib/Ext.tree.ColumnTreeCheckNodeUI.js"></script> <script type="text/javascript" src="jslib/Ext.hoo.tree.UserCheckNodeColumnTree.js"></script> </head> <body> <div id="show" style="margin-left: 200px; margin-top: 50px;"></div> </body> </html> ~~~ 运行后，效果如下： [](http://hi.csdn.net/attachment/201105/12/0_1305176238y2Pk.gif) 如果有子节点的话，可以选择、展开子节点