设计并实现一个基于Java的简单文件系统

原创梦里梦外; 2024-10-07 14:36 31阅读 0赞

设计一个简单的文件系统，我们可以创建一个`FileSystem`类，包含目录和文件的创建、读取、写入等操作。这里我们只提供基础功能，实际应用中可能需要考虑更多的细节。

```java
import java.io.File;
import java.io.IOException;

public class FileSystem {
    private File rootDirectory;

public FileSystem(File root) {
        this.rootDirectory = root;
    }

// Create directory
    public void createDir(String path) throws IOException {
        File dir = new File(rootDirectory, path));
        if (!dir.exists()) {
            dir.mkdir();
        } else {
            throw new IOException("Directory already exists: " + dir.getAbsolutePath());
        }
    }

// Create file
    public void createFile(String filePath) throws IOException {
        File file = new File(rootDirectory, filePath));
        if (!file.exists()) {
            file.createNewFile();
        } else {
            throw new IOException("File already exists: " + file.getAbsolutePath());
        }
    }

// Read file content
    public String readFileContent(String filePath) throws IOException {
        File file = new File(rootDirectory, filePath));
        if (file.exists() && file.canRead()) {
            try (BufferedReader br = new BufferedReader(new FileReader(file)))) {
                return br.readLine();
            }
        } else {
            throw new IOException("File does not exist or cannot be read: " + file.getAbsolutePath());
        }
    }

// Write content to file
    public void writeFileContent(String filePath, String content) throws IOException {
        File file = new File(rootDirectory, filePath));
        if (file.exists() && file.canWrite()) {
            try (PrintWriter writer = new PrintWriter(file)) {
                writer.println(content);
            }
        } else {
            throw new IOException("File does not exist or cannot be written: " + file.getAbsolutePath());
        }
    }
}
```

这个`FileSystem`类提供了创建、读取和写入文件系统的操作。你可以根据需要扩展此类来适应更复杂的文件系统需求。