用Java实现简单文件系统，包括读写操作

原创 Love The Way You Lie 2024-10-11 23:48 73阅读 0赞

在Java中，我们可以使用java.io包来实现一个简单的文件系统。以下是一个基本的实现，包括读写操作：

```java
import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class SimpleFilesystem {
    private File root;

public SimpleFilesystem(File root) {
        this.root = root;
    }

// Write to file
    public void writeToFile(String filePath, String content) {
        try {
            File outputFile = new File(filePath);
            if (!outputFile.getParentFile().exists()) {
                // Create parent directory if it doesn't exist
                outputFile.getParentFile().mkdirs();
            }
            BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile)));
            writer.write(content);
            writer.close();
            System.out.println("Content written to file: " + filePath);
        } catch (IOException e) {
            System.err.println("Error writing to file: " + e.getMessage());
            e.printStackTrace();
        }
    }

// Read from file
    public String readFromFile(String filePath) {
        try {
            File inputFile = new File(filePath);
            BufferedReader reader = new BufferedReader(new FileReader(inputFile)));
            StringBuilder contentBuilder = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                contentBuilder.append(line).append("\n");
            }
            reader.close();
            System.out.println("Content read from file: " + filePath);
            return contentBuilder.toString(); // Return the read content
        } catch (IOException e) {
            System.err.println("Error reading from file: " + e.getMessage());
            e.printStackTrace();
        }
        return null; // Return null if there's an error reading from the file
    }

public static void main(String[] args) {
        SimpleFilesystem fs = new SimpleFilesystem(new File("test directory"))); // Create a simple filesystem with the test directory

try {
            // Write content to a file in the test directory
            fs.writeToFile("/test/content.txt", "This is some content written to a file.");

// Read content from the same file
            String content = fs.readFromFile("/test/content.txt");
            System.out.println("Content read from file: " + content);

} catch (IOException e) {
            System.err.println("Error performing file operations: " + e.getMessage());
            e.printStackTrace();
        }
    }
}
```

这个程序创建了一个简单的文件系统，可以进行读写操作。请注意，为了运行此示例，你需要提供一个实际的文件路径（如："test directory"）来作为文件系统的根目录。