片段 1

片段 2

pom.xml

<dependency>

    <groupId>commons-codec</groupId>

    <artifactId>commons-codec</artifactId>

    <version>1.11</version>

</dependency>

GZipUtil.java

package com.app.core.util;

import lombok.extern.log4j.Log4j2;

import org.apache.commons.codec.CharEncoding;

import org.apache.commons.codec.binary.Base64;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.util.zip.GZIPInputStream;

import java.util.zip.GZIPOutputStream;

@Log4j2

public class GZipUtil {

    /**

     * 压缩GZip

     *

     * @return String

     */

    public static String gZip(String input) {

        byte[] bytes = null;

        GZIPOutputStream gzip = null;

        ByteArrayOutputStream bos = null;

        try {

            bos = new ByteArrayOutputStream();

            gzip = new GZIPOutputStream(bos);

            gzip.write(input.getBytes(CharEncoding.UTF_8));

            gzip.finish();

            gzip.close();

            bytes = bos.toByteArray();

            bos.close();

        } catch (Exception e) {

            log.error("压缩出错：", e);

        } finally {

            try {

                if (gzip != null)

                    gzip.close();

                if (bos != null)

                    bos.close();

            } catch (final IOException ioe) {

                log.error("压缩出错：", ioe);

            }

        }

        return Base64.encodeBase64String(bytes);

    }

    /**

     * 解压GZip

     *

     * @return String

     */

    public static String unGZip(String input) {

        byte[] bytes;

        String out = input;

        GZIPInputStream gzip = null;

        ByteArrayInputStream bis;

        ByteArrayOutputStream bos = null;

        try {

            bis = new ByteArrayInputStream(Base64.decodeBase64(input));

            gzip = new GZIPInputStream(bis);

            byte[] buf = new byte[1024];

            int num;

            bos = new ByteArrayOutputStream();

            while ((num = gzip.read(buf, 0, buf.length)) != -1) {

                bos.write(buf, 0, num);

            }

            bytes = bos.toByteArray();

            out = new String(bytes, CharEncoding.UTF_8);

            gzip.close();

            bis.close();

            bos.flush();

            bos.close();

        } catch (Exception e) {

            log.error("解压出错：", e);

        } finally {

            try {

                if (gzip != null)

                    gzip.close();

                if (bos != null)

                    bos.close();

            } catch (final IOException ioe) {

                log.error("解压出错：", ioe);

            }

        }

        return out;

    }

}