使用GZIPOutputStream压缩字符串

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPOutputStream;

public class GZIPExample {
    public static void main(String[] args) {
        String originalString = "This is a sample string to be compressed using GZIPOutputStream.";
        
        try {
            byte[] compressedBytes = compressString(originalString);
            System.out.println("Original size: " + originalString.length());
            System.out.println("Compressed size: " + compressedBytes.length);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static byte[] compressString(String str) throws IOException {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        GZIPOutputStream gzipOutputStream = new GZIPOutputStream(byteArrayOutputStream);
        
        gzipOutputStream.write(str.getBytes());
        gzipOutputStream.close();
        
        return byteArrayOutputStream.toByteArray();
    }
}