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java zip处理工具

 1、pom依赖

        <!--        zip打包工具-->
        <dependency>
            <groupId>org.apache.ant</groupId>
            <artifactId>ant</artifactId>
            <version>1.10.5</version>
        </dependency>

2、utils工具类

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.nio.charset.Charset;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;


public class ZipUtils {

    /**
     * 压缩一个文件或者目录
     *
     * @param zipFileName 压缩后的文件名(绝对路径):
     *                    如E:\app_data\\upload\temp\batchDownload\A2023001_检查.zip
     * @param zipFilePath 需要被压缩的文件路径(绝对路径):
     *                    如E:\app_data\\upload\temp\batchDownload\A2023001_检查
     * @throws Exception
     */
    public static void zip(String zipFileName, String zipFilePath) throws Exception {
        zip(zipFileName, new File(zipFilePath));
    }

    /**
     * @param zipFileName 压缩后的文件名及路径
     * @param zipFilePath 要被压缩的文件的输入流
     * @throws Exception
     */
    public static void zip(String zipFileName, File zipFilePath) throws Exception {
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
        zip(out, zipFilePath, "");
        System.out.println("zip done");
        out.close();
    }

    /**
     * 用于压缩整个目录或者单个文件
     *
     * @param out  源文件的输出流
     * @param f    目标压缩文件的输入流
     * @param base a
     * @throws Exception
     */
    private static void zip(ZipOutputStream out, File f, String base) throws Exception {
        System.out.println("Zipping  " + f.getName());
        if (f.isDirectory()) {
            File[] fl = f.listFiles();
            //out.putNextEntry(new ZipEntry(base+"/"));
            out.putNextEntry(new org.apache.tools.zip.ZipEntry(base + f.getName() + "/"));
            for (int i = 0; i < fl.length; i++) {
                //zip(out,fl[i],base);
                zip(out, fl[i], base + f.getName() + "/");
            }
        } else {
            //base=base.length()==0?"":base+"/";
            out.putNextEntry(new org.apache.tools.zip.ZipEntry(base + f.getName()));
            FileInputStream in = new FileInputStream(f);
            int len;
            byte[] buffer = new byte[1024];
            while ((len = in.read(buffer)) != -1) {
                out.write(buffer, 0, len);
            }
            in.close();
        }
    }

    /**
     * 解压缩
     *
     * @param zipFileName     压缩文件
     * @param outputDirectory 目标路径
     * @throws Exception
     */
    public static void unzip(String zipFileName, String outputDirectory) throws Exception {
        unzip(zipFileName, outputDirectory, Charset.forName("GBK"));
    }

    /**
     * 解压缩
     *
     * @param zipFile         压缩文件
     * @param outputDirectory 目标路径
     * @throws Exception
     */
    public static void unzip(File zipFile, String outputDirectory) throws Exception {
        ZipInputStream in = new ZipInputStream(new FileInputStream(zipFile));
        ZipEntry z;
        while ((z = in.getNextEntry()) != null) {
            System.out.println("unziping " + z.getName());
            if (z.isDirectory()) {
                String name = z.getName();
                name = name.substring(0, name.length() - 1);
                File f = new File(outputDirectory + File.separator + name);
                f.mkdir();
                System.out.println("mkdir " + outputDirectory + File.separator + name);
            } else {
                File f = new File(outputDirectory + File.separator + z.getName());
                f.createNewFile();
                FileOutputStream out = new FileOutputStream(f);
                int b;
                while ((b = in.read()) != -1) {
                    out.write(b);
                }
                out.close();
            }
        }
        in.close();
    }

    /**
     * 解压缩
     *
     * @param zipFileName     压缩文件
     * @param outputDirectory 目标路径
     * @throws Exception
     */
    public static void unzip(String zipFileName, String outputDirectory, Charset charset) throws Exception {
        ZipInputStream in = new ZipInputStream(new FileInputStream(zipFileName), charset);
        ZipEntry z;
        while ((z = in.getNextEntry()) != null) {
            System.out.println("unziping " + z.getName());
            if (z.isDirectory()) {
                String name = z.getName();
                name = name.substring(0, name.length() - 1);
                File f = new File(outputDirectory + File.separator + name);
                f.mkdir();
                System.out.println("mkdir " + outputDirectory + File.separator + name);
            } else {
                File f = new File(outputDirectory + File.separator + z.getName());
                f.createNewFile();
                FileOutputStream out = new FileOutputStream(f);
                int b;
                while ((b = in.read()) != -1) {
                    out.write(b);
                }
                out.close();
            }
        }
        in.close();
    }

    //测试压缩文件
    public static void main(String[] args) throws Exception {
        String zipFileName = "E:\\test\\aa.zip";
        String zipFilePath = "E:\\test\\aa";
        zip(zipFileName, zipFilePath);
    }
}
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