java玩轉zip壓縮包

首先將相關jar包引入pom.xml中

      <!-- 解壓zip -->
        <dependency>
            <groupId>org.apache.ant</groupId>
            <artifactId>ant</artifactId>
            <version>1.9.4</version>
        </dependency>    

廢話不多說，直接上代碼

import org.apache.tools.zip.ZipFile;
import java.io.*;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipUtils {
    private static final int BUFFER_SIZE = 2 * 1024;

    /**
     * 壓縮成ZIP 方法1
     * 24
     *
     * @param srcDir           壓縮文件夾路徑
     * @param out              壓縮文件輸出流
     * @param KeepDirStructure 是否保留原來的目錄結構,true:保留目錄結構;
     *                         false:所有文件跑到壓縮包根目錄下(注意：不保留目錄結構可能會出現同名文件,會壓縮失敗)
     * @throws RuntimeException 壓縮失敗會拋出運行時異常
     */
    public static void toZip(String srcDir, OutputStream out, boolean KeepDirStructure)
            throws RuntimeException {
        long start = System.currentTimeMillis();
        ZipOutputStream zos = null;
        try {
            zos = new ZipOutputStream(out);
            File sourceFile = new File(srcDir);
            compress(sourceFile, zos, sourceFile.getName(), KeepDirStructure);
            long end = System.currentTimeMillis();
            System.out.println("壓縮完成，耗時：" + (end - start) + " ms");
        } catch (Exception e) {
            throw new RuntimeException("zip error from ZipUtils", e);
        } finally {
            if (zos != null) {
                try {
                    zos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * 壓縮成ZIP 方法2
     *
     * @param srcFiles 需要壓縮的文件列表
     * @param out      壓縮文件輸出流
     * @throws RuntimeException 壓縮失敗會拋出運行時異常
     */
    public static void toZip(List<File> srcFiles, OutputStream out) throws RuntimeException {
        long start = System.currentTimeMillis();
        ZipOutputStream zos = null;
        try {
            zos = new ZipOutputStream(out);
            for (File srcFile : srcFiles) {
                byte[] buf = new byte[BUFFER_SIZE];
                zos.putNextEntry(new ZipEntry(srcFile.getName()));
                int len;
                FileInputStream in = new FileInputStream(srcFile);
                while ((len = in.read(buf)) != -1) {
                    zos.write(buf, 0, len);
                }
                zos.closeEntry();
                in.close();
            }
            long end = System.currentTimeMillis();
            System.out.println("壓縮完成，耗時：" + (end - start) + " ms");
        } catch (Exception e) {
            throw new RuntimeException("zip error from ZipUtils", e);
        } finally {
            if (zos != null) {
                try {
                    zos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * 遞歸壓縮方法
     *
     * @param sourceFile       源文件
     * @param zos              zip輸出流
     * @param name             壓縮后的名稱
     * @param KeepDirStructure 是否保留原來的目錄結構,true:保留目錄結構;
     *                         false:所有文件跑到壓縮包根目錄下(注意：不保留目錄結構可能會出現同名文件,會壓縮失敗)
     * @throws Exception
     */
    private static void compress(File sourceFile, ZipOutputStream zos, String name,
                                 boolean KeepDirStructure) throws Exception {
        byte[] buf = new byte[BUFFER_SIZE];
        if (sourceFile.isFile()) {
            // 向zip輸出流中添加一個zip實體，構造器中name為zip實體的文件的名字
            zos.putNextEntry(new ZipEntry(name));
            // copy文件到zip輸出流中
            int len;
            FileInputStream in = new FileInputStream(sourceFile);
            while ((len = in.read(buf)) != -1) {
                zos.write(buf, 0, len);
            }
            // Complete the entry
            zos.closeEntry();
            in.close();
        } else {
            File[] listFiles = sourceFile.listFiles();
            if (listFiles == null || listFiles.length == 0) {
                // 需要保留原來的文件結構時,需要對空文件夾進行處理
                if (KeepDirStructure) {
                    // 空文件夾的處理
                    zos.putNextEntry(new ZipEntry(name + "/"));
                    // 沒有文件，不需要文件的copy
                    zos.closeEntry();
                }
            } else {
                for (File file : listFiles) {
                    // 判斷是否需要保留原來的文件結構
                    if (KeepDirStructure) {
                        // 注意：file.getName()前面需要帶上父文件夾的名字加一斜杠,
                        // 不然最后壓縮包中就不能保留原來的文件結構,即：所有文件都跑到壓縮包根目錄下了
                        compress(file, zos, name + "/" + file.getName(), KeepDirStructure);
                    } else {
                        compress(file, zos, file.getName(), KeepDirStructure);
                    }
                }

            }

        }
    }

    /**
     * 解壓zip格式的壓縮文件到指定位置
     *
     * @param zipFileName 壓縮文件
     * @param extPlace    解壓目錄
     * @throws Exception
     */
    public static boolean unZipFiles(String zipFileName, String extPlace) {
        System.setProperty("sun.zip.encoding",
                System.getProperty("sun.jnu.encoding"));
        try {
            (new File(extPlace)).mkdirs();
            File f = new File(zipFileName);
            ZipFile zipFile = new ZipFile(zipFileName, "GBK"); // 處理中文文件名亂碼的問題
            if ((!f.exists()) && (f.length() <= 0)) {
                throw new Exception("要解壓的文件不存在!");
            }
            String strPath, gbkPath, strtemp;
            File tempFile = new File(extPlace);
            strPath = tempFile.getAbsolutePath();
            Enumeration<?> e = zipFile.getEntries();
            while (e.hasMoreElements()) {
                org.apache.tools.zip.ZipEntry zipEnt = (org.apache.tools.zip.ZipEntry) e.nextElement();
                gbkPath = zipEnt.getName();
                if (zipEnt.isDirectory()) {
                    strtemp = strPath + File.separator + gbkPath;
                    File dir = new File(strtemp);
                    dir.mkdirs();
                    continue;
                } else { // 讀寫文件
                    InputStream is = zipFile.getInputStream(zipEnt);
                    BufferedInputStream bis = new BufferedInputStream(is);
                    gbkPath = zipEnt.getName();
                    strtemp = strPath + File.separator + gbkPath;// 建目錄
                    String strsubdir = gbkPath;
                    for (int i = 0; i < strsubdir.length(); i++) {
                        if (strsubdir.substring(i, i + 1).equalsIgnoreCase("/")) {
                            String temp = strPath + File.separator
                                    + strsubdir.substring(0, i);
                            File subdir = new File(temp);
                            if (!subdir.exists())
                                subdir.mkdir();
                        }
                    }
                    FileOutputStream fos = new FileOutputStream(strtemp);
                    BufferedOutputStream bos = new BufferedOutputStream(fos);
                    int c;
                    while ((c = bis.read()) != -1) {
                        bos.write((byte) c);
                    }
                    bos.close();
                    fos.close();
                }
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
}