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This article shows you how to compress jar, the content is concise and easy to understand, can definitely make your eyes bright, through the detailed introduction of this article, I hope you can get something.

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Compressed into jarpackage com.wuxiongwei.java.jar2;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;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;/** * a very good utility class

* compressed into jar. * @ author * @ version 1.0.0 * / public class JarCompressor {private static Log log = LogFactory.getLog (JarCompressor.class); private static final int BUFFER = 8192; private File fileName; private String originalUrl; public JarCompressor (String pathName) {fileName = new File (pathName);} public void compress (String...) PathName) {ZipOutputStream out = null; try {FileOutputStream fileOutputStream = new FileOutputStream (fileName); CheckedOutputStream cos = new CheckedOutputStream (fileOutputStream, new CRC32 ()); out = new ZipOutputStream (cos); String basedir = ""; for (int I = 0; I < pathName.length) Compress +) {compress (new File (pathname [I]), out, basedir);} out.close ();} catch (Exception e) {throw new RuntimeException (e);}} public void compress (String srcPathName) {File file = new File (srcPathName) If (! file.exists ()) throw new RuntimeException (srcPathName + "does not exist!") ; try {FileOutputStream fileOutputStream = new FileOutputStream (fileName); 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) }} private void compress (File file, ZipOutputStream out, String basedir) {/ * determine whether it is a directory or a file * / if (file.isDirectory ()) {this.compressDirectory (file, out, basedir);} else {this.compressFile (file, out, basedir) } / * compressed directory * @ param dir * @ param out * @ param basedir * / private void compressDirectory (File dir, ZipOutputStream out, String basedir) {if (! dir.exists ()) return; File [] files = dir.listFiles (); for (int I = 0; I < files.length ) {/ * Recursive * / compress (files [I], out, basedir + dir.getName () + "/") }} / * compressed file * @ param file * @ param out * @ param basedir * / private void compressFile (File file, ZipOutputStream out, String basedir) {if (! file.exists ()) {return;} try {BufferedInputStream bis = new BufferedInputStream (new FileInputStream (file)) String filePath = (basedir + file.getName ()) .replaceAll (getOriginalUrl () + "/", "); log.info (" compressed file: "+ filePath); ZipEntry entry = new ZipEntry (filePath); 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) } public static void main (String [] args) {JarCompressor zc = new JarCompressor ("/ Users/mac/Documents/other/bw2/test.jar"); zc.compress ("/ Users/mac/Documents/other/bw2/test/");} public String getOriginalUrl () {return originalUrl;} public void setOriginalUrl (String originalUrl) {this.originalUrl = originalUrl }} the above is how to compress jar. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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