import java.util.Arrays;import java.util.zip.Deflater;import java.util.zip.Inflater;import cc.zeelan.mall.common.assertion.Assert;/** * 数据压缩解压 *  * @project common-utils * @fileName StringZlibUtil.java * @Description * @author light-zhang * @date 2019年5月9日 * @version 1.0.0 */public class CompressUtil {    /**     * 压缩     *      * @param input       * @return     */    public static byte[] compress(byte[] input) {        try {            byte[] output = new byte[Integer.sum(input.length + 10,                    Double.valueOf(Math.ceil(input.length * 0.25f)).intValue())];            Deflater compresser = new Deflater(9);//压缩级别            compresser.setInput(input);            compresser.finish();            int compressedDataLength = compresser.deflate(output);            compresser.end();            return Arrays.copyOf(output, compressedDataLength);        } catch (Exception e) {            Assert.RuntimeException("数据压缩失败");        }        return null;    }    /**     * 解压缩     *      * @param barr 须要解压缩的字节数组     * @return     * @throws Exception     */    public static byte[] uncompress(byte[] barr) {        try {            byte[] result = new byte[2014];            Inflater inf = new Inflater();            inf.setInput(barr);            int infLen = inf.inflate(result);            inf.end();            return Arrays.copyOf(result, infLen);        } catch (Exception e) {            e.printStackTrace();        }        return null;    }    public static void main(String[] args) throws Exception {        String str = "abcde|qqqqqqqqqqqqqqq|wwwwwwwwwwwwwwwwwwww";         System.out.println("压缩前 " + str.getBytes().length);        byte[] def = CompressUtil.compress(str.getBytes());        System.out.println("压缩后 " + def.length);        byte[] inf = CompressUtil.uncompress(def);        System.out.println(new String(inf));     }}