字符串的压缩与解压

import java.io.ByteArrayOutputStream;import java.io.IOException;import java.util.zip.DataFormatException;import java.util.zip.Deflater;import java.util.zip.Inflater;public class Test {public static void main(String[] args) {String str = "这是将要被压缩的数据！";System.out.println("原数据：" + str);byte[] zipData = zip(str);System.out.println("压缩后：" + zipData);byte[] openData = disZip(zipData);System.out.println("解压后：" + new String(openData));}/** * 压缩算法 * @param str 将要压缩的数据 * @return 压缩后的数据 */private static byte[] zip(String str){ byte[] input = str.getBytes(); Deflater compressor = new Deflater(); compressor.setLevel(Deflater.BEST_COMPRESSION); compressor.setInput(input); compressor.finish(); ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length); byte[] buf = new byte[1024]; try {while (!compressor.finished()) { int count = compressor.deflate(buf); bos.write(buf, 0, count); bos.flush();}} catch (IOException e) {e.printStackTrace();}finally{try {bos.close();} catch (IOException e) {e.printStackTrace();}} byte[] compressedData = bos.toByteArray(); return compressedData;}/** * 解压算法 * @param compressedData 压缩数据 * @return 解压缩数据 */private static byte[] disZip(byte[] compressedData){ Inflater decompressor = new Inflater(); decompressor.setInput(compressedData); ByteArrayOutputStream bos = new ByteArrayOutputStream(compressedData.length); byte[] buf = new byte[1024]; try {while (!decompressor.finished()) { int count = decompressor.inflate(buf); bos.write(buf, 0, count); bos.flush();}} catch (DataFormatException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}finally{try {bos.close();} catch (IOException e) {e.printStackTrace();}} byte[] decompressedData = bos.toByteArray(); return decompressedData;}}