如何用Java实现zlib压缩和解压

可以使用Java中提供的Inflater和Deflater类来实现zlib压缩和解压功能。

以下是一个简单的示例代码，演示如何使用Java实现zlib压缩和解压：

import java.util.zip.Deflater; import java.util.zip.Inflater;  public class ZlibExample {      public static byte[] compress(byte[] data) {     Deflater deflater = new Deflater();     deflater.setInput(data);     deflater.finish();          byte[] buffer = new byte[data.length];     int compressedDataLength = deflater.deflate(buffer);          byte[] compressedData = new byte[compressedDataLength];     System.arraycopy(buffer, 0, compressedData, 0, compressedDataLength);          deflater.end();          return compressedData;   }      public static byte[] decompress(byte[] compressedData) {     Inflater inflater = new Inflater();     inflater.setInput(compressedData);          byte[] buffer = new byte[compressedData.length * 2];     int decompressedDataLength;     try {       decompressedDataLength = inflater.inflate(buffer);     } catch (Exception e) {       decompressedDataLength = 0;     }          byte[] decompressedData = new byte[decompressedDataLength];     System.arraycopy(buffer, 0, decompressedData, 0, decompressedDataLength);          inflater.end();          return decompressedData;   }      public static void main(String[] args) {     String data = "Hello, World!";     byte[] compressedData = compress(data.getBytes());     System.out.println("Compressed data: " + new String(compressedData));          byte[] decompressedData = decompress(compressedData);     System.out.println("Decompressed data: " + new String(decompressedData));   } } 

在上面的示例中，compress()方法用于对数据进行压缩，decompress()方法用于对压缩后的数据进行解压。在main()方法中，我们演示了如何压缩和解压数据。