I am working with to show all files and folders of a FTPserver into a JTree. But I got a problem that the empty folders are shown as a file. But how to show them as a folder icon?
Here is my code:
public void buildTree(){
try {
ftpClient.connect("130.229.178.31");
ftpClient.login("admin", "123456");
root = new DefaultMutableTreeNode("Welcome!");
for (int i = 0; i < 1; i++) {
DefaultMutableTreeNode temp = new DefaultMutableTreeNode("FTP-Server");
root.add(temp);
bind(temp,"");
}
} catch (IOException e1) {
e1.printStackTrace();
throw new RuntimeException("Client Error", e1);
}
try {
ftpClient.disconnect();
} catch (IOException e2) {
e2.printStackTrace();
throw new RuntimeException("Error when shutdown", e2);
}
}
// bind nod/subnode to the tree (recursive method)
public void bind(DefaultMutableTreeNode node,String path){
try {
Boolean defaultPath = true;
while (defaultPath)
{
defaultPath = ftpClient.changeToParentDirectory();
}
ftpClient.changeWorkingDirectory(path);
FTPFile[] files = ftpClient.listFiles();
for(int i=0;files!=null && i<files.length;i++){
FTPFile tempFile = files[i];
if(tempFile.isDirectory()){
DefaultMutableTreeNode tempNode = new DefaultMutableTreeNode(tempFile.getName());
node.add(tempNode);
bind(tempNode, path+"/"+tempFile.getName());
}else{
DefaultMutableTreeNode tempNode = new DefaultMutableTreeNode(tempFile.getName());
node.add(tempNode);
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
The "sad" folder is a empty folder, but shown as a file icon. How to change it?
Thank you very much
PS: Same of the methods is not working, like
FileSystemView fileSystemView = FileSystemView.getFileSystemView();
setIcont(fileSystemView.getSystemIcon(File file));
Because we are working with FTP files not with files.
You have two choices:
I think the second coice is preferable. I also recommend to use your own TreeModel to indicate if the tree node is a file or folder.
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