编写一个简单的二级文件系统实现程序用java语言
时间: 2024-02-26 09:57:33 浏览: 20
好的,我可以提供一个简单的二级文件系统实现的 Java 程序,但是需要说明的是,这只是一个示例程序,可能存在一些不足之处,不能用于生产环境。这个程序的实现基于一个简单的目录结构,其中每个目录都包含一个名称和一个子目录列表,每个文件包含一个名称和一个字符串内容。
以下是示例程序的代码:
```java
import java.util.ArrayList;
import java.util.List;
public class File {
private String name;
private String content;
public File(String name, String content) {
this.name = name;
this.content = content;
}
public String getName() {
return name;
}
public String getContent() {
return content;
}
}
public class Directory {
private String name;
private List<Directory> directories;
private List<File> files;
public Directory(String name) {
this.name = name;
this.directories = new ArrayList<>();
this.files = new ArrayList<>();
}
public String getName() {
return name;
}
public void addDirectory(Directory directory) {
directories.add(directory);
}
public List<Directory> getDirectories() {
return directories;
}
public void addFile(File file) {
files.add(file);
}
public List<File> getFiles() {
return files;
}
}
public class FileSystem {
private Directory root;
public FileSystem() {
this.root = new Directory("/");
}
public File getFile(String path) {
String[] parts = path.split("/");
Directory current = root;
for (int i = 1; i < parts.length - 1; i++) {
String name = parts[i];
boolean found = false;
for (Directory subdirectory : current.getDirectories()) {
if (subdirectory.getName().equals(name)) {
current = subdirectory;
found = true;
break;
}
}
if (!found) {
return null;
}
}
String name = parts[parts.length - 1];
for (File file : current.getFiles()) {
if (file.getName().equals(name)) {
return file;
}
}
return null;
}
public Directory getDirectory(String path) {
String[] parts = path.split("/");
Directory current = root;
for (int i = 1; i < parts.length; i++) {
String name = parts[i];
boolean found = false;
for (Directory subdirectory : current.getDirectories()) {
if (subdirectory.getName().equals(name)) {
current = subdirectory;
found = true;
break;
}
}
if (!found) {
return null;
}
}
return current;
}
public boolean createFile(String path, String content) {
String[] parts = path.split("/");
Directory current = root;
for (int i = 1; i < parts.length - 1; i++) {
String name = parts[i];
boolean found = false;
for (Directory subdirectory : current.getDirectories()) {
if (subdirectory.getName().equals(name)) {
current = subdirectory;
found = true;
break;
}
}
if (!found) {
return false;
}
}
String name = parts[parts.length - 1];
for (File file : current.getFiles()) {
if (file.getName().equals(name)) {
return false;
}
}
current.addFile(new File(name, content));
return true;
}
public boolean createDirectory(String path) {
String[] parts = path.split("/");
Directory current = root;
for (int i = 1; i < parts.length; i++) {
String name = parts[i];
boolean found = false;
for (Directory subdirectory : current.getDirectories()) {
if (subdirectory.getName().equals(name)) {
current = subdirectory;
found = true;
break;
}
}
if (!found) {
Directory newDirectory = new Directory(name);
current.addDirectory(newDirectory);
current = newDirectory;
}
}
return true;
}
public boolean deleteFile(String path) {
String[] parts = path.split("/");
Directory current = root;
for (int i = 1; i < parts.length - 1; i++) {
String name = parts[i];
boolean found = false;
for (Directory subdirectory : current.getDirectories()) {
if (subdirectory.getName().equals(name)) {
current = subdirectory;
found = true;
break;
}
}
if (!found) {
return false;
}
}
String name = parts[parts.length - 1];
for (File file : current.getFiles()) {
if (file.getName().equals(name)) {
current.getFiles().remove(file);
return true;
}
}
return false;
}
public boolean deleteDirectory(String path) {
String[] parts = path.split("/");
Directory current = root;
for (int i = 1; i < parts.length - 1; i++) {
String name = parts[i];
boolean found = false;
for (Directory subdirectory : current.getDirectories()) {
if (subdirectory.getName().equals(name)) {
current = subdirectory;
found = true;
break;
}
}
if (!found) {
return false;
}
}
String name = parts[parts.length - 1];
for (Directory directory : current.getDirectories()) {
if (directory.getName().equals(name)) {
current.getDirectories().remove(directory);
return true;
}
}
return false;
}
}
```
这个程序实现了以下功能:
- 创建文件和目录
- 删除文件和目录
- 获取文件和目录
- 获取目录的子目录列表和文件列表
你可以根据自己的需求修改这个程序,并进行扩展。