java zlib压缩

Java中可以使用java.util.zip包中的Deflater和Inflater类来进行zlib压缩和解压缩。

以下是一个简单的示例代码：

import java.util.zip.*;

public class ZlibCompression {
   public static void main(String[] args) {
      String input = "Hello, world!";
      byte[] uncompressed = input.getBytes();

      // 压缩
      Deflater deflater = new Deflater();
      deflater.setInput(uncompressed);
      deflater.finish();
      byte[] compressed = new byte[uncompressed.length];
      int compressedLength = deflater.deflate(compressed);
      deflater.end();

      // 解压缩
      Inflater inflater = new Inflater();
      inflater.setInput(compressed, 0, compressedLength);
      byte[] decompressed = new byte[uncompressed.length];
      int decompressedLength = inflater.inflate(decompressed);
      inflater.end();

      String output = new String(decompressed, 0, decompressedLength);
      System.out.println(output); // 输出 "Hello, world!"
   }
}