java文件目录符号 java文件目录树

1. 目标格式，使用tree命令时，目录树格式如下。

public class TreeTest {
public static void main(String[] args) {
File root = new File("${path}/apache-tomcat-7.0.93/webapps/manager/");
tree(root, -1, 0, "");
}
public static void tree(File file, int index, int parentIndex, String parentFix) {
String nowFix = "";
if (parentIndex == 0) {
nowFix = parentFix + " ";
} else if(parentIndex > 0) {
nowFix = parentFix + "| ";
}
System.out.println(nowFix + (parentIndex >= 0 ? "|-" : "") + file.name());
if (file.isDirectory()) {
files[] files = file.listFiles();
if (files == null) return;
List fileList = Arrays.stream(files).sorted((f1, f2) -> f2.getName().compareToIgnoreCase(f1.getName())).collect(Collections.toList());
for (int i = fileList.size() - 1; i >= 0; --i) {
File f = fileList.get(i);
tree(f, i, index, nowFix);
}
}
}
}

3. 代码输出：

manager
|-images
| |-add.gif
| |-asf-logo.svg
| |-code.gif
| |-design.gif
| |-docs.gif
| |-fix.gif
| |-tomcat.gif
| |-update.gif
| |-void.gif
|-index.jsp
|-META-INF
| |-context.xml
|-status.xsd
|-WEB-INF
| |-jsp
| | |-401.jsp
| | |-403.jsp
| | |-404.jsp
| | |-sessionDetail.jsp
| | |-sessionsList.jsp
| |-web.xml
|-xform.xsl