Struts1基于Json数据格式的ExtJs单选树(Struts1+Spring+Hibernate)
功能描述:根据Json格式数据生成单选树,然后将选择后的数据回调到文本框中
http://172.16.1.136:5000/tjfae_oa_service/org/orgtree?parentId=0&code=e8ca9f833c615e52647b4e88b87bc32c&type=oa&time=1332746215687,当在地址栏中输入该地址会返回json格式的数据
json数据格式:[{"id":"1","text":"根机构","leaf":false}],
当parentId=1时,数据为:[{"id":"20","text":"山东资产交易所","leaf":false},{"id":"10","text":"北京地区总部","leaf":true},{"id":"30","text":"上海地区总部","leaf":true}, {"id":"40","text":"深圳地区总部","leaf":true}]
同理:当从action跳转时也一样:/members/urlEncapsulation.do?parentId=0
一、先看效果图再贴代码:
1、
2、当点击上图的"选择管理员",就会通过action跳转到一个新的窗口(我的是RadioTree.jsp),然后显示以下数据
3、当点击根机构时,实现异步加载形成单选树结构
4、当选中一个员工,确定,将选中的员工回调到文本框
二、以上是效果图,接下来是实现的代码:
1、userRadioTree.jsp代码:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%
String Path = request.getContextPath();
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<!-- base library -->
<link rel="stylesheet" type="text/css" href="/scripts/ext/resources/css/ext-all.css" />
<link rel="stylesheet" type="text/css" href="/scripts/ext/resources/css/css.css" />
<!-- ExtJS library: base/adapter -->
<script type="text/javascript" src="/scripts/ext/adapter/ext/ext-base.js"></script>
<!-- ExtJS library: all widgets -->
<script type="text/javascript" src="/scripts/ext/ext-all.js"></script>
<script type="text/javascript" src="/scripts/ext/TreeCheckNodeUI.js"></script> //该js好多版本都没有,但是对于单选树来说很重要,(如果不加的话可能会形成复选框,这一点我没有试)我会在下面将代码贴出来
<script type="text/javascript" src="/scripts/ext/ext-lang-zh_CN.js"></script>
<script type="text/javascript">
Ext.onReady(function(){
var treeLoader = new Ext.tree.TreeLoader({
baseAttrs: {uiProvider: Ext.ux.TreeCheckNodeUI }
});
// 添加一个树形面板
var treepanel = new Ext.tree.TreePanel({
// renderTo:"tree_div",//如果使用renderTo,则不能使用setRootNode()方法,需要在TreePanel中设置root属性。
el : 'tree-panel',// 将树形添加到一个指定的div中,非常重要!
baseCls:'',
region : 'west',
title : '人员单选树',
width : 200,
minSize : 180,
maxSize : 250,
split : true,
autoHeight : false,
frame : true,// 美化界面
autoScroll : true, // 自动滚动
enableDD : false,// 是否支持拖拽效果
onlyLeafCheckable: true,
containerScroll : true,// 是否支持滚动条
checkModel: 'single', // 对树的级联多选 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)
rootVisible : false, // 是否隐藏根节点,很多情况下,我们选择隐藏根节点增加美观性
border : true, // 边框
animate : true, // 动画效果
loader : treeLoader,
buttons: [{
text: '确认',
handler: function(){
var chooseNodeName = '',chooseNodeId = '',selNodes = treepanel.getChecked();
var chooseParentId='',chooseParentName='';
Ext.each(selNodes, function(node){
if(chooseNodeName.length > 0){
chooseNodeName += ',';
chooseNodeId += ',';
}
chooseNodeName += node.text;//选中的员工姓名
chooseNodeId += node.id;//选中的员工ID
chooseParentId=node.parentNode.id;//父结点ID,此处一定要注意:node.parentNode后面一定要加.id,不加的话在火狐不报错,在IE就会报
});
window.opener.userRadioCallBack(chooseNodeId,chooseNodeName,'',chooseParentId);//回调函数同样重要
window.close();
}
}]
});
// 异步加载根节点
var rootnode = new Ext.tree.AsyncTreeNode({
id : '${rootId}', //根结点ID,因为我的根结点为0(parentId=0),所以id也可以直接写成"id:0",当然你也可以根据自己的需求用uuid来表示,或者用其他变量表示都可以
text : '根节点',
draggable : false,// 根节点不容许拖动
expanded : true
});
// 为tree设置根节点
treepanel.setRootNode(rootnode);
// 响应加载前事件,传递node参数
treepanel.on('beforeload', function(node) {
treepanel.loader.dataUrl = "${Path}/members/interdomainTurnAction.htm?parentId="+node.id+""; // 定义子节点的Loader,此处调用action就是实现了点击不同结点,展开不同的机构
});
// 渲染树形
treepanel.render();
// 展开节点,第一个参数表示是否级联展开子节点
rootnode.expand(false);//默认为false
});
</script>
<body>
<div id="tree-panel" align="left" style="margin-left:auto; margin-right:auto"></div>
</body>
</html>
2、/members/interdomainTurnAction.htm跳转的action: InterdomainTurnAction(异步加载结点形成树结构,不需要跳转任何页面)
package com.score.web.action.members;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.score.common.util.Security;
import com.score.web.action.core.BaseAction;
/**
* 跨域跳转,根据接口获取不同服务器上的数据,写入到相应的页面,并生成单选树
* @author Administrator
*
*/
public class InterdomainTurnAction extends BaseAction {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
PrintWriter out = response.getWriter();
String urlString = "http://172.16.1.136:5000/tjfae_oa_service/org/usertree?";//此处为另一台服务器上的接口,当然我们也可以用自己的action地址来实现该功能(在自己的action中实现返回json数据的方法,格式一定要和上面的json格式一样,其他的json格式没试过)
String type = "oa";//加密用(自己的里面也可以不用写)
Date date = new Date();
Long timeLong = date.getTime();//加密用(自己的里面也可以不用写)
String keys = type+timeLong; //加密用(自己的里面也可以不用写)
//接收从userRadioTree.jsp页面传过来的当前节点
String pid = request.getParameter("parentId");
//进行加密,获取32位密码
String result =Security.getPassword(keys, "UTF-8");//该方法为加密方法,同上面一样用来加密的,可以不用写(加密方法在我的博客中有[MD5加密],可以自己找,此处就不贴代码了)
//拼接URL
StringBuffer sBuffer = new StringBuffer();
sBuffer.append(urlString).append("parentId=").append(pid).append("&code=").append(result).append("&type=").append(type).append("&time=").append(timeLong);
// 根据拼凑的URL,打开连接,URL.openConnection函数会根据URL的类型,
// 返回不同的URLConnection子类的对象,这里URL是一个http,因此实际返回的是HttpURLConnection
URL getUrl = new URL(sBuffer.toString());
HttpURLConnection connection = (HttpURLConnection) getUrl
.openConnection();
// 进行连接,但是实际上get request要在下一句的connection.getInputStream()函数中才会真正发到服务器
connection.connect();
// 取得输入流,并使用Reader读取
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(),"utf-8"));//设置编码,否则中文乱码
System.out.println("=============================");
System.out.println("InterdomainTurnAction....");
System.out.println("=============================");
String lines;
//如果读取的数据不为null的话,将数据写入页面
while ((lines = reader.readLine()) != null){
out.print(lines);
System.out.println(lines);
}
//关闭输入流
reader.close();
return null;
}
}
3、选择管理员页面(效果图1所在的页面selectManager.jsp)设置:
<table width="100%" border="0" cellpadding="0" cellspacing="1" bgcolor="#a8c7ce">
<tr>
<td height="20" class="STYLE6" width="30%">
管理员:
</td>
<td class="STYLE10" width="65%">
<input type="hidden" id="managerId" name="managerId" />
<input type="text" id="managerName" name="managerName" readonly="readonly" />
<input type="button" onclick="selectManager()" value="选择管理员"/>
</td>
</tr>
</table>
selectManager.jsp页面JavaScript代码:
//选择管理员
function selectManager(){
window.open("/members/urlEncapsulation.htm");
}
//回调函数,(userRadioTree.jsp)返回OA系统办工人员的ID及姓名,并赋值给文本框
//注意:回调函数一定要和InterdomainTurnAction里面的回调函数一致
function userRadioCallBack(chooseNodeId,chooseNodeName,n){
$("#managerId").val(chooseNodeId);
$("#managerName").val(chooseNodeName);
}
4、/members/urlEncapsulation.htm action:
package com.score.web.action.members;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.score.web.action.core.BaseAction;
/**
* 跳转单选树页面
* @author Administrator
*
*/
public class UrlEncapsulationAction extends BaseAction{
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
//获取根节点
String rootId = request.getParameter("parentId");
if("".equals(rootId)||rootId==null){//如果根节点为空的话,将根节点设置为0
rootId="0";
}
System.out.println("-------UrlEncapsulationAction--------->>>"+rootId);
request.setAttribute("rootId", rootId);
return mapping.findForward("oaUrl");
}
}
5、TreeCheckNodeUI.js(此处代码不需要修改,只需要引用即可)
/**
* @class Ext.ux.TreeCheckNodeUI
* @extends Ext.tree.TreeNodeUI
*
* 对 Ext.tree.TreeNodeUI 进行checkbox功能的扩展,后台返回的结点信息不用非要包含checked属性
*
* 扩展的功能点有:
* 一、支持只对树的叶子进行选择
* 只有当返回的树结点属性leaf = true 时,结点才有checkbox可选
* 使用时,只需在声明树时,加上属性 onlyLeafCheckable: true 既可,默认是false
*
* 二、支持对树的单选
* 只允许选择一个结点
* 使用时,只需在声明树时,加上属性 checkModel: "single" 既可
*
* 二、支持对树的级联多选
* 当选择结点时,自动选择该结点下的所有子结点,或该结点的所有父结点(根结点除外),特别是支持异步,当子结点还没显示时,会从后台取得子结点,然后将其选中/取消选中
* 使用时,只需在声明树时,加上属性 checkModel: "cascade" 或"parentCascade"或"childCascade"既可
*
* 三、添加"check"事件
* 该事件会在树结点的checkbox发生改变时触发
* 使用时,只需给树注册事件,如:
* tree.on("check",function(node,checked){...});
*
* 默认情况下,checkModel为'multiple',也就是多选,onlyLeafCheckable为false,所有结点都可选
*
* 使用方法:在loader里加上 baseAttrs:{uiProvider:Ext.ux.TreeCheckNodeUI} 既可.
* 例如:
* var tree = new Ext.tree.TreePanel({
* el:'tree-ct',
* width:568,
* height:300,
* checkModel: 'cascade', //对树的级联多选
* onlyLeafCheckable: false,//对树所有结点都可选
* animate: false,
* rootVisible: false,
* autoScroll:true,
* loader: new Ext.tree.DWRTreeLoader({
* dwrCall:Tmplt.getTmpltTree,
* baseAttrs: { uiProvider: Ext.ux.TreeCheckNodeUI } //添加 uiProvider 属性
* }),
* root: new Ext.tree.AsyncTreeNode({ id:'0' })
* });
* tree.on("check",function(node,checked){alert(node.text+" = "+checked)}); //注册"check"事件
* tree.render();
*
*/
Ext.ux.TreeCheckNodeUI = 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.TreeCheckNodeUI.superclass.constructor.apply(this, arguments);
};
Ext.extend(Ext.ux.TreeCheckNodeUI, Ext.tree.TreeNodeUI, {
renderElements : function(n, a, targetNode, bulkRender){
var tree = n.getOwnerTree();
this.checkModel = tree.checkModel || this.checkModel;
this.onlyLeafCheckable = tree.onlyLeafCheckable || false;
// add some indent caching, this helps performance when rendering a large tree
this.indentMarkup = n.parentNode ? n.parentNode.ui.getChildIndent() : '';
//var cb = typeof a.checked == 'boolean';
var cb = (!this.onlyLeafCheckable || a.leaf);
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">',
'<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,"</span></a></div>",
'<ul class="x-tree-node-ct" style="display:none;"></ul>',
"</li>"].join('');
var nel;
if(bulkRender !== true && n.nextSibling && (nel = n.nextSibling.ui.getEl())){
this.wrap = Ext.DomHelper.insertHtml("beforeBegin", nel, buf);
}else{
this.wrap = Ext.DomHelper.insertHtml("beforeEnd", targetNode, buf);
}
this.elNode = this.wrap.childNodes[0];
this.ctNode = this.wrap.childNodes[1];
var cs = this.elNode.childNodes;
this.indentNode = cs[0];
this.ecNode = cs[1];
this.iconNode = cs[2];
var index = 3;
if(cb){
this.checkbox = cs[3];
Ext.fly(this.checkbox).on('click', this.check.createDelegate(this,[null]));
index++;
}
this.anchor = cs[index];
this.textNode = cs[index].firstChild;
},
// 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.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);
}
}
} else 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);
}
}
}
},
// 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);
}
}
});