Java 显示所有系统';在jtree中创建文件和文件夹
我是java开发新手 我正在尝试显示系统的所有驱动器,包括所有文件和文件夹。 此代码工作正常,但仅显示单个目录或驱动器。 如何使其显示系统上的所有驱动器,包括文件夹和文件。 提前谢谢 ///显示特定目录的实现(当前使用netbeans) //文件系统模型Java 显示所有系统';在jtree中创建文件和文件夹,java,netbeans-7,jtree,Java,Netbeans 7,Jtree,我是java开发新手 我正在尝试显示系统的所有驱动器,包括所有文件和文件夹。 此代码工作正常,但仅显示单个目录或驱动器。 如何使其显示系统上的所有驱动器,包括文件夹和文件。 提前谢谢 ///显示特定目录的实现(当前使用netbeans) //文件系统模型 public class FileSystemModel implements TreeModel { private File root; private Vector listeners = new Vector(); public Fi
public class FileSystemModel implements TreeModel {
private File root;
private Vector listeners = new Vector();
public FileSystemModel(File rootDirectory)
{
root = rootDirectory;
}
@Override
public Object getRoot() {
return root;
}
@Override
public Object getChild(Object parent, int index) {
File directory = (File) parent;
String[] children = directory.list();
return new FileSystemModel.TreeFile(directory, children[index]);
}
@Override
public int getChildCount(Object parent) {
File file = (File) parent;
if (file.isDirectory()) {
String[] fileList = file.list();
if (fileList != null) {
return file.list().length;
}
}
return 0;
}
@Override
public boolean isLeaf(Object node) {
File file = (File) node;
return file.isFile();
}
@Override
public int getIndexOfChild(Object parent, Object child) {
File directory = (File) parent;
File file = (File) child;
String[] children = directory.list();
for (int i = 0; i < children.length; i++) {
if (file.getName().equals(children[i])) {
return i;
}
}
return -1;
}
@Override
public void valueForPathChanged(TreePath path, Object value) {
File oldFile = (File) path.getLastPathComponent();
String fileParentPath = oldFile.getParent();
String newFileName = (String) value;
File targetFile = new File(fileParentPath, newFileName);
oldFile.renameTo(targetFile);
File parent = new File(fileParentPath);
int[] changedChildrenIndices = {getIndexOfChild(parent, targetFile)};
Object[] changedChildren = {targetFile};
fireTreeNodesChanged(path.getParentPath(), changedChildrenIndices, changedChildren);
}
private void fireTreeNodesChanged(TreePath parentPath, int[] indices, Object[] children) {
TreeModelEvent event = new TreeModelEvent(this, parentPath, indices, children);
Iterator iterator = listeners.iterator();
TreeModelListener listener = null;
while (iterator.hasNext()) {
listener = (TreeModelListener) iterator.next();
listener.treeNodesChanged(event);
}
}
@Override
public void addTreeModelListener(TreeModelListener listener) {
listeners.add(listener);
}
@Override
public void removeTreeModelListener(TreeModelListener listener) {
listeners.remove(listener);
}
private class TreeFile extends File {
public TreeFile(File parent, String child) {
super(parent, child);
}
@Override
public String toString() {
return getName();
}
}
}
public类FileSystemModel实现TreeModel{
私有文件根;
私有向量侦听器=新向量();
公共文件系统模型(文件根目录)
{
root=rootDirectory;
}
@凌驾
公共对象getRoot(){
返回根;
}
@凌驾
公共对象getChild(对象父对象,int索引){
文件目录=(文件)父目录;
String[]children=directory.list();
返回新的FileSystemModel.TreeFile(目录,子目录[index]);
}
@凌驾
public int getChildCount(对象父对象){
文件文件=(文件)父级;
if(file.isDirectory()){
字符串[]fileList=file.list();
如果(文件列表!=null){
返回file.list().length;
}
}
返回0;
}
@凌驾
公共布尔isLeaf(对象节点){
文件=(文件)节点;
返回file.isFile();
}
@凌驾
public int getIndexOfChild(对象父对象、对象子对象){
文件目录=(文件)父目录;
文件文件=(文件)子文件;
String[]children=directory.list();
for(int i=0;i
要找到整个树,您需要识别其中一个子目录本身是目录,并收集其内容。看起来您希望在调用getChild
的方法中实现这一点(getChildren是一个更好的名称)
public class FileSystemModel implements TreeModel {
private File root;
private Vector listeners = new Vector();
public FileSystemModel(File rootDirectory)
{
root = rootDirectory;
}
@Override
public Object getRoot() {
return root;
}
@Override
public Object getChild(Object parent, int index) {
File directory = (File) parent;
String[] children = directory.list();
return new FileSystemModel.TreeFile(directory, children[index]);
}
@Override
public int getChildCount(Object parent) {
File file = (File) parent;
if (file.isDirectory()) {
String[] fileList = file.list();
if (fileList != null) {
return file.list().length;
}
}
return 0;
}
@Override
public boolean isLeaf(Object node) {
File file = (File) node;
return file.isFile();
}
@Override
public int getIndexOfChild(Object parent, Object child) {
File directory = (File) parent;
File file = (File) child;
String[] children = directory.list();
for (int i = 0; i < children.length; i++) {
if (file.getName().equals(children[i])) {
return i;
}
}
return -1;
}
@Override
public void valueForPathChanged(TreePath path, Object value) {
File oldFile = (File) path.getLastPathComponent();
String fileParentPath = oldFile.getParent();
String newFileName = (String) value;
File targetFile = new File(fileParentPath, newFileName);
oldFile.renameTo(targetFile);
File parent = new File(fileParentPath);
int[] changedChildrenIndices = {getIndexOfChild(parent, targetFile)};
Object[] changedChildren = {targetFile};
fireTreeNodesChanged(path.getParentPath(), changedChildrenIndices, changedChildren);
}
private void fireTreeNodesChanged(TreePath parentPath, int[] indices, Object[] children) {
TreeModelEvent event = new TreeModelEvent(this, parentPath, indices, children);
Iterator iterator = listeners.iterator();
TreeModelListener listener = null;
while (iterator.hasNext()) {
listener = (TreeModelListener) iterator.next();
listener.treeNodesChanged(event);
}
}
@Override
public void addTreeModelListener(TreeModelListener listener) {
listeners.add(listener);
}
@Override
public void removeTreeModelListener(TreeModelListener listener) {
listeners.remove(listener);
}
private class TreeFile extends File {
public TreeFile(File parent, String child) {
super(parent, child);
}
@Override
public String toString() {
return getName();
}
}
}