java實作zip壓縮檔案（同一檔案夾下的多個檔案夾打成一個zip包）

package com.gblfy.test;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * java實作zip壓縮檔案（同一檔案夾下的多個檔案夾打成一個zip包）
 *
 * @author gblfy
 * @date 2020-07-02
 */
public class ZipCompressor {
    static final int BUFFER = 8192;

    private File zipFile;

    public ZipCompressor(String pathName) {
        zipFile = new File(pathName);
    }

    /**
     * 壓縮入口
     * 适配:
     * 1.壓縮檔案
     * 2.壓縮檔案夾
     *
     * @param pathName 傳入一個或者多個檔案/檔案夾的絕對路徑 可變參數
     */
    public void compress(String... pathName) {
        ZipOutputStream out = null;
        try {
            FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
            CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,
                    new CRC32());
            out = new ZipOutputStream(cos);
            String basedir = "";
            for (int i = 0; i < pathName.length; i++) {

                //循環周遊傳入的檔案或者檔案夾的絕對路徑的 可變參數
                compress(new File(pathName[i]), out, basedir);
            }
            out.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 判斷傳參類型:是目錄還是檔案
     * <p>
     * 1.如果是檔案,則調用壓縮檔案方法
     * 2.如果是目錄,則調用壓縮目錄方法
     * </p>
     *
     * @param file
     * @param out
     * @param basedir
     */
    private void compress(File file, ZipOutputStream out, String basedir) {
        if (file.isDirectory()) {
            System.out.println("壓縮：" + basedir + file.getName());
            //調用壓縮目錄方法
            this.compressDirectory(file, out, basedir);
        } else {
            System.out.println("壓縮：" + basedir + file.getName());
            //調用壓縮檔案方法
            this.compressFile(file, out, basedir);
        }
    }

    /**
     * 壓縮一個目錄
     */
    private void compressDirectory(File dir, ZipOutputStream out, String basedir) {
        if (!dir.exists()) {
            System.out.println("壓縮目錄不存在,請核實！");
            return;
        }
        File[] files = dir.listFiles();
        for (int i = 0; i < files.length; i++) {
            /* 遞歸 */
            compress(files[i], out, basedir + dir.getName() + "/");
        }
    }

    /**
     * 壓縮一個檔案
     */
    private void compressFile(File file, ZipOutputStream out, String basedir) {
        if (!file.exists()) {
            System.out.println("壓縮檔案不存在,請核實！");
            return;
        }
        try {
            BufferedInputStream bis = new BufferedInputStream(
                    new FileInputStream(file));
            ZipEntry entry = new ZipEntry(basedir + file.getName());
            out.putNextEntry(entry);
            int count;
            byte data[] = new byte[BUFFER];
            while ((count = bis.read(data, 0, BUFFER)) != -1) {
                out.write(data, 0, count);
            }
            bis.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 壓縮指定檔案(檔案個數限定1個)
     *
     * @param srcPathName
     */
    public void compress(String srcPathName) {
        File file = new File(srcPathName);
        if (!file.exists()) {
            throw new RuntimeException(srcPathName + "不存在！");
        }
        try {
            FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
            CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,
                    new CRC32());
            ZipOutputStream out = new ZipOutputStream(cos);
            String basedir = "";
            compress(file, out, basedir);
            out.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        ZipCompressor zc = new ZipCompressor("D:/resource.zip");
        // String b = "D:\\1\\";
        String b = "D:\\1.jpg";
        zc.compress(b);
        // zc.compress("D:\\1.jpg", "D:\\3.jpeg", "D:\\4.jpg", b);
    }
}      

package com.gblfy.test;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * java實作zip壓縮檔案（同一檔案夾下的多個檔案夾打成一個zip包）
 *
 * @author gblfy
 * @date 2020-07-02
 */
public class ZipCompressor2 {
    static final int BUFFER = 8192;

    /**
     * 壓縮入口
     * 适配:
     * 1.壓縮檔案
     * 2.壓縮檔案夾
     *
     * @param pathName 傳入一個或者多個檔案/檔案夾的絕對路徑 可變參數
     */
    public void compress(String pathName, String zipFileName) {
        ZipOutputStream out = null;
        try {
            FileOutputStream fileOutputStream = new FileOutputStream(zipFileName);
            CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,
                    new CRC32());
            out = new ZipOutputStream(cos);
            String basedir = "";
            //循環周遊傳入的檔案或者檔案夾的絕對路徑的 可變參數
            compress(new File(pathName), out, basedir);
            out.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 判斷傳參類型:是目錄還是檔案
     * <p>
     * 1.如果是檔案,則調用壓縮檔案方法
     * 2.如果是目錄,則調用壓縮目錄方法
     * </p>
     *
     * @param file
     * @param out
     * @param basedir
     */
    private void compress(File file, ZipOutputStream out, String basedir) {
        if (file.isDirectory()) {
            System.out.println("壓縮：" + basedir + file.getName());
            //調用壓縮目錄方法
            this.compressDirectory(file, out, basedir);
        } else {
            System.out.println("壓縮：" + basedir + file.getName());
            //調用壓縮檔案方法
            this.compressFile(file, out, basedir);
        }
    }

    /**
     * 壓縮一個目錄
     */
    private void compressDirectory(File dir, ZipOutputStream out, String basedir) {
        if (!dir.exists()) {
            System.out.println("壓縮目錄不存在,請核實！");
            return;
        }
        File[] files = dir.listFiles();
        for (int i = 0; i < files.length; i++) {
            /* 遞歸 */
            compress(files[i], out, basedir + dir.getName() + "/");
        }
    }

    /**
     * 壓縮一個檔案
     */
    private void compressFile(File file, ZipOutputStream out, String basedir) {
        if (!file.exists()) {
            System.out.println("壓縮檔案不存在,請核實！");
            return;
        }
        try {
            BufferedInputStream bis = new BufferedInputStream(
                    new FileInputStream(file));
            ZipEntry entry = new ZipEntry(basedir + file.getName());
            out.putNextEntry(entry);
            int count;
            byte data[] = new byte[BUFFER];
            while ((count = bis.read(data, 0, BUFFER)) != -1) {
                out.write(data, 0, count);
            }
            bis.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 壓縮指定檔案(特殊場景)
     * 檔案個數限定1個
     *
     * @param srcPathName
     */
    public void compressFile(String srcPathName, String zipName) {
        File file = new File(srcPathName);
        if (!file.exists()) {
            throw new RuntimeException(srcPathName + "不存在！");
        }
        try {
            FileOutputStream fileOutputStream = new FileOutputStream(zipName);
            CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream,
                    new CRC32());
            ZipOutputStream out = new ZipOutputStream(cos);
            String basedir = "";
            compress(file, out, basedir);
            out.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        ZipCompressor2 zc = new ZipCompressor2();
        String b = "D:\\1\\";
        String zipName = "D:\\www.zip";
        // String b = "D:\\1.jpg";
        zc.compress(b, zipName);
        // zc.compress("D:\\1.jpg", "D:\\3.jpeg", "D:\\4.jpg", b);
    }
}