Java實現壓縮與解壓
import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; import java.util.zip.ZipInputStream; import java.util.zip.ZipOutputStream; /** * 壓縮與解壓 * @author hulujie * */ public class ZipUtil { /** * 壓縮檔案 * * @param srcfile * File[] 需要壓縮的檔案列表 "F:\\asd" * @param zipfile * File 壓縮後的檔案 "f:\\qwe_16_V6.0.0_1.zip"; * @throws IOException * @throws FileNotFoundException */ public static void ZipFiles(java.io.File[] srcfile, java.io.File zipfile) throws IOException { ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipfile)); for(int i = 0; i < srcfile.length; ++i){ if(srcfile[i].isDirectory()){ zipDir(zipOut,srcfile[i],srcfile[i].getName()); }else{ zipFile(zipOut,srcfile[i],null); } } zipOut.close(); } /** * 遞迴壓縮資料夾 faterName的目的就是為了維持原來的目錄 * @author hulujie * @since 2016年9月2日 下午5:33:26 * @param zipOut * @param dirFile * @param faterName * @return * @throws IOException */ private static ZipOutputStream zipDir(ZipOutputStream zipOut,File dirFile,String faterName) throws IOException{ File fileList[] = dirFile.listFiles(); for (int i = 0; i < fileList.length; i++) { if(fileList[i].isDirectory()){ zipDir(zipOut,fileList[i],faterName+File.separator+fileList[i].getName()); }else{ zipFile(zipOut,fileList[i],faterName); } } return zipOut; } /** * 壓縮單個檔案 * @author hulujie * @since 2016年9月2日 下午5:40:26 * @param zipOut * @param file * @throws IOException */ private static void zipFile(ZipOutputStream zipOut,File file,String faterName) throws IOException{ InputStream input = null; byte[] buf = new byte[1024]; input = new FileInputStream(file); if(faterName!=null){ zipOut.putNextEntry(new ZipEntry(faterName+File.separator+file.getName())); }else{ zipOut.putNextEntry(new ZipEntry(File.separator+file.getName())); } int temp = 0; while((temp = input.read(buf)) != -1){ zipOut.write(buf,0,temp); } input.close(); } /** * zip解壓縮 * * @param zipfile * File 需要解壓縮的檔案 "f:\\qwe_16_V6.0.0_1.zip"; * @param descDir * String 解壓後的目標目錄 "F:\\asd"; */ public static void unFiles(File file, String outputDirectory) throws IOException { File outzipFile = new File(outputDirectory); if(!outzipFile.exists()){ outzipFile.mkdirs(); } byte[] buf = new byte[1024]; File outFile = null; ZipFile zipFile = new ZipFile(file); ZipInputStream zipInput = new ZipInputStream(new FileInputStream(file)); ZipEntry entry = null; InputStream input = null; OutputStream output = null; while((entry = zipInput.getNextEntry()) != null){ outFile = new File(outputDirectory + File.separator + entry.getName()); if(entry.isDirectory()){ outFile.mkdir(); }else{ if(!outFile.getParentFile().exists()){ outFile.getParentFile().mkdirs(); } outFile.createNewFile(); input = zipFile.getInputStream(entry); output = new FileOutputStream(outFile); int temp = 0; while((temp = input.read(buf)) != -1){ output.write(buf,0,temp); } input.close(); output.close(); } } zipFile.close(); zipInput.close(); } public static void main(String[] args){ String dirPath = "F:\\asd"; String zipFilePath = "f:\\qwe_16_V6.0.0_1.zip"; try { File file = new File(dirPath); File zipFile = new File(zipFilePath); if(!zipFile.exists()){ zipFile.createNewFile(); } ZipFiles(file.listFiles(),zipFile); // unFiles(zipFile,dirPath); } catch (IOException e) { e.printStackTrace(); } } }