zip压缩unzip解压缩

package com.health.synergism.base.util;

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

import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;


/**
 * @author Bai Jing on 2021-05-08
 */
public class StreamUtil {

    /**
     * ZIP压缩XML数据，文件内容BASE64编码
     *
     * @param fileName
     * @return
     * @throws Exception
     */
    public static String file2Str(String fileName) throws Exception {
        byte[] bytes;
        try (ByteArrayOutputStream bos = new ByteArrayOutputStream(5 * 1024 * 1024);
             ZipOutputStream zos = new ZipOutputStream(bos)) {
            InputStream is = StreamUtil.class.getResourceAsStream(fileName);
            if (is.available() > 0) {
                try (BufferedInputStream fileReader = new BufferedInputStream(is)) {
                    zos.putNextEntry(new ZipEntry(fileName));
                    byte[] b = new byte[1024];
                    int i;
                    while ((i = fileReader.read(b)) != -1) {
                        zos.write(b, 0, i);
                    }
                    zos.closeEntry();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            bytes = bos.toByteArray();
        }
        return Base64.encodeBase64String(bytes);
    }

    /**
     * 文件内容BASE64解码，UNZIP解压缩
     *
     * @param con
     * @throws Exception
     */
    public static void str2File(String con) throws Exception {
        byte[] bytes = Base64.decodeBase64(con);
        try (ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
             ZipInputStream zis = new ZipInputStream(bis)) {
            ZipEntry entry;
            while ((entry = zis.getNextEntry()) != null) {
                String name = entry.getName();
                try (FileOutputStream fos = new FileOutputStream("D:\\xml\\" + name)) {
                    byte[] buf = new byte[1024];
                    int len;
                    while ((len = zis.read(buf)) != -1) {
                        fos.write(buf, 0, len);
                    }
                    zis.closeEntry();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }

    public static void main(String[] args) throws Exception {
        String s = file2Str("/2015.xml");
        System.out.println(s);
        str2File(s);
    }

}