先简单的粘贴下代码，正在学习java的东西，正好用到swing，算是做个练习。API太多，还没有梳理太清楚，慢慢回顾。
@H_403_4@public @H_403_4@class TreeFrame @H_403_4@extends JFrame {
@H_403_4@public @H_403_4@static @H_403_4@final @H_403_4@int WIDTH = 1100;
@H_403_4@public @H_403_4@static @H_403_4@final @H_403_4@int HEIGHT = 615;
@H_403_4@private @H_403_4@static @H_403_4@int xlocation,ylocation;
@H_403_4@private @H_403_4@boolean xmlFlag = @H_403_4@false;
@H_403_4@private JPanel treeArea = @H_403_4@new JPanel();
@H_403_4@private JPanel buttons = @H_403_4@new JPanel();
DefaultMutableTreeNode top = @H_403_4@new DefaultMutableTreeNode("行政规划");
@H_403_4@private JTree menuTree = @H_403_4@new JTree(top);
@H_403_4@private JTextArea text = @H_403_4@new JTextArea();
DefaultTreeModel model;
FileOutputStream fos;
OutputStreamWriter osw;
@H_403_4@public TreeFrame(){
@H_403_4@this.setTitle("省份名称");
@H_403_4@this.setSize(WIDTH,HEIGHT);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
xlocation = (screenSize.width-WIDTH)/2;
ylocation = (screenSize.height-HEIGHT)/2;
@H_403_4@this.setLocation(xlocation,ylocation);
//设置关闭窗口
@H_403_4@this.addWindowListener(@H_403_4@new WindowListener() {
@Override
@H_403_4@public @H_403_4@void windowOpened(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
@H_403_4@public @H_403_4@void windowIconified(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
@H_403_4@public @H_403_4@void windowDeiconified(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
@H_403_4@public @H_403_4@void windowDeactivated(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
@H_403_4@public @H_403_4@void windowClosing(WindowEvent e) {
@H_403_4@try {
fos=@H_403_4@new FileOutputStream("xml/data.xml");
osw=@H_403_4@new OutputStreamWriter(fos,"utf-8");
osw.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"+"\r\n");
model = (DefaultTreeModel)menuTree.getModel();
DefaultMutableTreeNode root = (DefaultMutableTreeNode)model.getRoot();
//头结点行政规划不用保存
saveToFile(root.getNextNode(),osw);
osw.close();
fos.close();
} @H_403_4@catch (IOException error) {
error.printStackTrace();
}
System.exit(0);
}
@Override
@H_403_4@public @H_403_4@void windowClosed(WindowEvent e) {
// TODO Auto-generated method stub
}
@Override
@H_403_4@public @H_403_4@void windowActivated(WindowEvent e) {
// TODO Auto-generated method stub
}
});
Container container = @H_403_4@this.getContentPane();
initTreeJPanel();
inintButtonJpanel();
JSplitPane mainFrameSplit = @H_403_4@new JSplitPane();
mainFrameSplit.setEnabled(@H_403_4@false);
mainFrameSplit.setLeftComponent(treeArea);
mainFrameSplit.setRightComponent(text);
treeArea.add(buttons,BorderLayout.SOUTH);
container.add(mainFrameSplit);
@H_403_4@this.setMenuBar(getMenuBar());
}
/** * 初始化按键区域 */
@H_403_4@public @H_403_4@void inintButtonJpanel(){
model = (DefaultTreeModel)menuTree.getModel();
JButton addSiblingButton = @H_403_4@new JButton("添加兄弟结点");
JButton addChildButton = @H_403_4@new JButton("添加孩子结点");
JButton deleteSelectedButton = @H_403_4@new JButton("删除选中结点");
JButton editSelectedButton = @H_403_4@new JButton("编辑选中结点");
buttons.add(addChildButton);
buttons.add(addSiblingButton);
buttons.add(deleteSelectedButton);
buttons.add(editSelectedButton);
//添加编辑结点的监听
editSelectedButton.addActionListener(@H_403_4@new ActionListener() {
@Override
@H_403_4@public @H_403_4@void actionPerformed(ActionEvent e) {
TreePath selectedPath = menuTree.getSelectionPath();
@H_403_4@if(selectedPath!=@H_403_4@null){
menuTree.startEditingAtPath(selectedPath);
}
text.append("编辑结点："+selectedPath+"\n");
}
});
//添加删除结点的监听
deleteSelectedButton.addActionListener(@H_403_4@new ActionListener() {
@Override
@H_403_4@public @H_403_4@void actionPerformed(ActionEvent e) {
TreePath selectedPath = menuTree.getSelectionPath();
DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode)menuTree.getLastSelectedPathComponent();
@H_403_4@if (selectedNode!=@H_403_4@null && selectedNode.getParent()!=@H_403_4@null) {
model.removeNodeFromParent(selectedNode);
}
text.append("删除了一个结点："+selectedPath+"\n");
}
});
//添加孩子结点的监听
addChildButton.addActionListener(@H_403_4@new ActionListener() {
@Override
@H_403_4@public @H_403_4@void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode)menuTree.getLastSelectedPathComponent();
@H_403_4@if (selectedNode == @H_403_4@null) {
@H_403_4@return;
}
DefaultMutableTreeNode newNode = @H_403_4@new DefaultMutableTreeNode("新结点");
selectedNode.add(newNode);
TreeNode []nodes = model.getPathToRoot(newNode);
TreePath path = @H_403_4@new TreePath(nodes);
menuTree.scrollPathToVisible(path);
menuTree.updateUI();
text.append("添加了一个结点："+path+"\n");
}
});
//添加兄弟节点结点的监听
addSiblingButton.addActionListener(@H_403_4@new ActionListener() {
@Override
@H_403_4@public @H_403_4@void actionPerformed(ActionEvent e) {
DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode)menuTree.getLastSelectedPathComponent();
@H_403_4@if (selectedNode == @H_403_4@null) {
@H_403_4@return;
}
DefaultMutableTreeNode parent = (DefaultMutableTreeNode)selectedNode.getParent();
@H_403_4@if (parent == @H_403_4@null) {
@H_403_4@return;
}
DefaultMutableTreeNode newNode = @H_403_4@new DefaultMutableTreeNode("新结点");
@H_403_4@int selectedIndex = parent.getIndex(selectedNode);
model.insertNodeInto(newNode,parent,selectedIndex + 1);
TreeNode []nodes = model.getPathToRoot(newNode);
TreePath path = @H_403_4@new TreePath(nodes);
menuTree.scrollPathToVisible(path);
text.append("添加了一个结点："+path+"\n");
}
});
}
/** * 初始化树形结构 */
@H_403_4@public @H_403_4@void initTreeJPanel(){
menuTree.setEditable(@H_403_4@true);
treeArea.setLayout(@H_403_4@new BorderLayout());
@H_403_4@int mainBorderWidth = getWidth();
@H_403_4@int mainBorderHeight = getHeight();
treeArea.setPreferredSize(@H_403_4@new Dimension(mainBorderWidth/4,mainBorderHeight) );
menuTree.setShowsRootHandles(@H_403_4@true);
initTreeParam();
JScrollPane jScrollTree = @H_403_4@new JScrollPane();
jScrollTree.getViewport().add(menuTree,1);
treeArea.add(jScrollTree,BorderLayout.CENTER);
}
/** * 初始化树形结构数据 */
@H_403_4@public @H_403_4@void initTreeParam(){
DefaultMutableTreeNode rootnode = (DefaultMutableTreeNode)menuTree.getModel().getRoot();
rootnode.removeAllChildren();
xmlFlag = xmlParser("xml/data.xml",top);
@H_403_4@if(!xmlFlag){
@H_403_4@return;
}@H_403_4@else {
TreeNode root = (TreeNode)menuTree.getModel().getRoot();
expandNode(menuTree,@H_403_4@new TreePath(root),@H_403_4@true,@H_403_4@false);
}
}
/** * 展开节点，好像有也可以 * @param tree * @param parent * @param expand * @param expandChildren */
@H_403_4@private @H_403_4@void expandNode(JTree tree,TreePath parent,@H_403_4@boolean expand,@H_403_4@boolean expandChildren){
TreeNode node = (TreeNode)parent.getLastPathComponent();
@H_403_4@if (node.getChildCount()>=0) {
@H_403_4@for (Enumeration e = node.children();e.hasMoreElements() ;) {
TreeNode n = (TreeNode)e.nextElement();
TreePath path = parent.pathByAddingChild(n);
@H_403_4@if (expandChildren) {
expandNode(tree,path,expand,expandChildren);
}
}
}
@H_403_4@if (expand) {
tree.expandPath(parent);
}@H_403_4@else {
tree.collapsePath(parent);
}
}
/** * 将xml结点添加到swing树形结构 * @param path xml路径 * @param top swing树形结构的头结点 * @return */
@H_403_4@private @H_403_4@boolean xmlParser(String path,DefaultMutableTreeNode top){
File file = @H_403_4@new File(path);
DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance();
@H_403_4@try {
DocumentBuilder dombuilder = domfac.newDocumentBuilder();
Document doc = dombuilder.parse(@H_403_4@new FileInputStream(file));
Element root = doc.getDocumentElement();
String name = root.getAttribute("name");
DefaultMutableTreeNode newnode = @H_403_4@new DefaultMutableTreeNode(name);
top.add(newnode);
@H_403_4@if (!Recurrence(root,newnode)) {
}
} @H_403_4@catch (ParserConfigurationException e) {
e.printStackTrace();
} @H_403_4@catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} @H_403_4@catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} @H_403_4@catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
@H_403_4@return @H_403_4@true;
}
/** * 遍历xml所有结点 * @param node xml结点 * @param top swing树形结构结点 * @return */
@H_403_4@private @H_403_4@boolean Recurrence(Node node,DefaultMutableTreeNode top){
List<Node> list = getElementNode(node);
DefaultMutableTreeNode snode= @H_403_4@null;
@H_403_4@if (list.size()==0) {
} @H_403_4@else {
@H_403_4@for(Node n : list){
NamedNodeMap nGetAttributes = n.getAttributes();
String name = nGetAttributes.getNamedItem("name").getNodeValue();
snode = @H_403_4@new DefaultMutableTreeNode(name);
top.add(snode);
@H_403_4@if (!Recurrence(n,snode)) {
@H_403_4@return @H_403_4@false;
}
}
}
@H_403_4@return @H_403_4@true;
}
/** * 找到xml结点的子节点 * @param node xml结点 * @return */
@H_403_4@private List<Node> getElementNode(Node node){
List<Node> list = @H_403_4@new LinkedList<Node>();
@H_403_4@for (Node n = node.getFirstChild();n!=@H_403_4@null;n=n.getNextSibling()) {
@H_403_4@if (n.getNodeType()==Node.ELEMENT_NODE) {
list.add(n);
}
}
@H_403_4@return list;
}
/** * 将树形结构保存到xml文件中 * @param root 根节点 * @param fw 输出流 */
@H_403_4@public @H_403_4@void saveToFile(DefaultMutableTreeNode root,OutputStreamWriter osw){
@H_403_4@try {
osw.write("<node name=\""+root.toString()+"\">\r\n");
@H_403_4@for (@H_403_4@int i=0; i < root.getChildCount(); i++){
DefaultMutableTreeNode childNode =(DefaultMutableTreeNode)root.getChildAt(i);
saveToFile(childNode,osw);
}
osw.write("</node>\r\n");
}@H_403_4@catch (Exception e){
e.printStackTrace();
}
}
@H_403_4@public @H_403_4@static @H_403_4@void main(String[] args) {
TreeFrame mainFrame = @H_403_4@new TreeFrame();
mainFrame.setResizable(@H_403_4@false);
mainFrame.setVisible(@H_403_4@true);
}
}
