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java中树形菜单的代码 java中树形菜单的代码是多少
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java带有checkbox的树型菜单
div
style="width: 100%; height: 94%; float: left; background:#f7f7f1;overflow-y:auto;"
id="treeDiv"/div
script type="text/javascript"
var selectedNodeID = '';
var org_treeList = new dhtmlXTreeObject(document.getElementById('treeDiv'),"100%","100%",0);
org_treeList.setImagePath("%=path%/images/tree/");
org_treeList.enableIEImageFix(true);
org_treeList.enableCheckBoxes(false);
org_treeList.enableDragAndDrop(false);
org_treeList.enableCheckBoxes(1);
org_treeList.enableThreeStateCheckboxes(true);
org_treeList.attachEvent("onOpenStart", function (id, state) {
if(state == '0')
{
org_treeList.setItemImage(id, 'folderOpen.gif','loading.gif');
}
if(state =='1')
{
org_treeList.setItemImage(id, 'folderOpen.gif','folderClosed.gif');
}
return true;
});
org_treeList.setXMLAutoLoading("你java中树形菜单的代码的xml地址");
org_treeList.loadXML("你java中树形菜单的代码的XML地址");
/script
上面是页面中java中树形菜单的代码的代码 这样的写法是动态加载的, 你可以去下面的地址查看具体用法
相关问答
Q1: 用java 生成一个树形菜单
package com.csii;
import java.awt.GridLayout;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeSelectionModel;
public class TreeDemo1 extends JFrame implements TreeSelectionListener {
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JTree jTree = null;
private JEditorPane jEditorPane = null;
private JScrollPane jScrollPane = null;
public JScrollPane getjScrollPane() {
if(jScrollPane==null){
jScrollPane = new JScrollPane();
jScrollPane.setViewportView(getJTree());
}
return jScrollPane;
}
DefaultMutableTreeNode top = null; // @jve:decl-index=0:
/**
* This is the default constructor
*/
public TreeDemo1() {
super();
initialize();
}
/**
* This method initializes this
*
* @return void
*/
private void initialize() {
this.setSize(438, 309);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setContentPane(getJContentPane());
this.setTitle("JFrame");
}
/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
GridLayout gridLayout = new GridLayout();
gridLayout.setRows(1);
gridLayout.setColumns(2);
jContentPane = new JPanel();
jContentPane.setLayout(gridLayout);
jContentPane.add(getjScrollPane(), null);
jContentPane.add(getJEditorPane(), null);
}
return jContentPane;
}
/**
* This method initializes jTree
*
* @return javax.swing.JTree
*/
private JTree getJTree() {
if (jTree == null) {
top = new DefaultMutableTreeNode("黄山");
createNodes(top);
jTree = new JTree(top);
jTree.getSelectionModel().setSelectionMode(
TreeSelectionModel.SINGLE_TREE_SELECTION);
jTree.addTreeSelectionListener(this);
}
return jTree;
}
private void createNodes(DefaultMutableTreeNode top) {
DefaultMutableTreeNode jingdian = null, jiaotong = null, zhusu = null, binguan = null, luying = null, jiesu = null;
jingdian = new DefaultMutableTreeNode("景点");
jingdian.add(new DefaultMutableTreeNode("景点1"));
jingdian.add(new DefaultMutableTreeNode("景点2"));
jiaotong = new DefaultMutableTreeNode("交通");
jiaotong.add(new DefaultMutableTreeNode("路线1"));
jiaotong.add(new DefaultMutableTreeNode("路线2"));
jiaotong.add(new DefaultMutableTreeNode("路线3"));
zhusu = new DefaultMutableTreeNode("住宿");
zhusu.add(new DefaultMutableTreeNode("A住宿"));
zhusu.add(new DefaultMutableTreeNode("B住宿"));
zhusu.add(new DefaultMutableTreeNode("C住宿"));
binguan = new DefaultMutableTreeNode("宾馆");
binguan.add(new DefaultMutableTreeNode("X宾馆"));
binguan.add(new DefaultMutableTreeNode("Y宾馆"));
binguan.add(new DefaultMutableTreeNode("Z宾馆"));
binguan.add(new DefaultMutableTreeNode("XYZ宾馆"));
luying = new DefaultMutableTreeNode("露营");
luying.add(new DefaultMutableTreeNode("方式1"));
luying.add(new DefaultMutableTreeNode("方式2"));
jiesu = new DefaultMutableTreeNode("借宿");
jiesu.add(new DefaultMutableTreeNode("借宿1"));
jiesu.add(new DefaultMutableTreeNode("借宿2"));
jiesu.add(new DefaultMutableTreeNode("借宿3"));
top.add(jingdian);
top.add(jiaotong);
top.add(zhusu);
top.add(binguan);
top.add(luying);
top.add(jiesu);
}
/**
* This method initializes jEditorPane
*
* @return javax.swing.JEditorPane
*/
private JEditorPane getJEditorPane() {
if (jEditorPane == null) {
jEditorPane = new JEditorPane();
}
return jEditorPane;
}
@Override
public void valueChanged(TreeSelectionEvent e) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) jTree
.getLastSelectedPathComponent();
if (node == null)
// Nothing is selected.
return;
if(node.isRoot()){
jEditorPane.setText("黄山的简介");
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(Exception e){
e.printStackTrace();
}
new TreeDemo1().setVisible(true);
}
});
}
}
Q2: java,jsp带checkbox的树形菜单，如何实现？
jsp中带有checkbox的属性菜单需要用easyui组件来实现，代码如下：
!DOCTYPE html
html
head
meta charset="UTF-8"
titleCheckBox Tree - jQuery EasyUI Demo/title
link rel="stylesheet" type="text/css" href="../../themes/default/easyui.css"
link rel="stylesheet" type="text/css" href="../../themes/icon.css"
link rel="stylesheet" type="text/css" href="../demo.css"
script type="text/javascript" src="../../jquery.min.js"/script
script type="text/javascript" src="../../jquery.easyui.min.js"/script
/head
body
h2CheckBox Tree/h2
pTree nodes with check boxes./p
div style="margin:20px 0;"
a href="#" class="easyui-linkbutton" onclick="getChecked()"GetChecked/a
/div
div style="margin:10px 0"
input type="checkbox" checked onchange="$('#tt').tree({cascadeCheck:$(this).is(':checked')})"CascadeCheck
input type="checkbox" onchange="$('#tt').tree({onlyLeafCheck:$(this).is(':checked')})"OnlyLeafCheck
/div
div class="easyui-panel" style="padding:5px"
ul id="tt" class="easyui-tree" data-options="url:'tree_data1.json',method:'get',animate:true,checkbox:true"/ul
/div
script type="text/javascript"
function getChecked(){
var nodes = $('#tt').tree('getChecked');
var s = '';
for(var i=0; inodes.length; i++){
if (s != '') s += ',';
s += nodes[i].text;
}
alert(s);
}
/script
/body
/html
运行效果：
Q3: Java递归如何正确输出树形菜单
首先我们要建立树节点的类：
[java] view plain copy
package com.tree;
public class Node {
private Integer id;
private Integer parentId;
private String name;
private String link;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getParentId() {
return parentId;
}
public void setParentId(Integer parentId) {
this.parentId = parentId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getLink() {
return link;
}
public void setLink(String link) {
this.link = link;
}
}
输出树形菜单类：
[java] view plain copy
package com.tree;
import java.util.ArrayList;
import java.util.List;
public class Tree {
private StringBuffer html = new StringBuffer();
private ListNode nodes;
public Tree(ListNode nodes){
this.nodes = nodes;
}
public String buildTree(){
html.append("ul");
for (Node node : nodes) {
Integer id = node.getId();
if (node.getParentId() == ) {
html.append("\r\nli id='" + id + "'" + node.getName()+ "/li");
build(node);
}
}
html.append("\r\n/ul");
return html.toString();
}
private void build(Node node){
ListNode children = getChildren(node);
if (!children.isEmpty()) {
html.append("\r\nul");
for (Node child : children) {
Integer id = child.getId();
html.append("\r\nli id='" + id + "'" + child.getName()+ "/li");
build(child);
}
html.append("\r\n/ul");
}
}
private ListNode getChildren(Node node){
ListNode children = new ArrayListNode();
Integer id = node.getId();
for (Node child : nodes) {
if (id.equals(child.getParentId())) {
children.add(child);
}
}
return children;
}
}
java中树形菜单的代码的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于java中树形菜单的代码是多少、java中树形菜单的代码的信息别忘了在本站进行查找喔。
