1. อ่าน ZIP ไฟล์ด้วย "ZipInputStream"
2. ดึงไฟล์ต่างๆให้ "ZipEntry" จัดการจากนั้นเขียนไฟล์ออกด้วย "FileOutputStream" 1
ตัวอย่าง
ในตัวอย่างเราจะทำการอ่านไฟล์ zip จาก "C:\\users\\nopphanan7\\Directory1.zip" และทำการคลาย zip ไปไว้ในโฟรเดอร์ "C:\\users\\nopphanan7\\outputzip".
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | package demo.compress; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.List; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream; public class DecompressZIPExample { List<string> fileList; private static final String INPUT_ZIP_FILE = "C:\\users\\nopphanan7\\Directory1.zip" ; private static final String OUTPUT_FOLDER = "C:\\users\\nopphanan7\\outputzip" ; /** * @param args */ public static void main(String[] args) { DecompressZIPExample unZip = new DecompressZIPExample(); unZip.unZipIt(INPUT_ZIP_FILE, OUTPUT_FOLDER); } /** * Unzip it * * @param zipFile * input zip file * @param output * zip file output folder */ public void unZipIt(String zipFile, String outputFolder) { byte [] buffer = new byte [ 1024 ]; try { // create output directory is not exists File folder = new File(OUTPUT_FOLDER); if (!folder.exists()) { folder.mkdir(); } // get the zip file content ZipInputStream zis = new ZipInputStream( new FileInputStream(zipFile)); // get the zipped file list entry ZipEntry ze = zis.getNextEntry(); while (ze != null ) { String fileName = ze.getName(); File newFile = new File(outputFolder + File.separator + fileName); System.out.println( "file unzip : " + newFile.getAbsoluteFile()); // create all non exists folders // else you will hit FileNotFoundException for compressed folder new File(newFile.getParent()).mkdirs(); FileOutputStream fos = new FileOutputStream(newFile); int len; while ((len = zis.read(buffer)) > 0 ) { fos.write(buffer, 0 , len); } fos.close(); ze = zis.getNextEntry(); } zis.closeEntry(); zis.close(); System.out.println( "Decompress zip file is done." ); } catch (IOException ex) { ex.printStackTrace(); } } } </string> |
1 2 3 4 5 6 | file unzip : C:\users\nopphanan7\outputzip\FIO.jpg file unzip : C:\users\nopphanan7\outputzip\photo.jpg file unzip : C:\users\nopphanan7\outputzip\photo2.jpg file unzip : C:\users\nopphanan7\outputzip\the_dark_knight.jpg file unzip : C:\users\nopphanan7\outputzip\ubuntu-black-1440x900.jpg Decompress zip file is done. |
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