Java.util.zip Compress package File summary One: Compress files and folders below the file

Source: Internet
Author: User

First, brief

Zip is used to compress and decompress files. The classes used are: ZipEntry Zipoutputstream

Second, the specific implementation of the Code

Package Com.joyplus.test;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.util.arraylist;import Java.util.list;import Java.util.zip.zipentry;import Java.util.zip.ZipOutputStream;/** * @author * compress all files and folders in file * Source: Path to File source * dest: Compressed file storage path*/ Public classZipFiletest1 {//get all files in the file source    PrivateList<file> Getsourceallfiles (String from) {List<File> filelist=NewArraylist<>(); File FromFile=NewFile ( from); File[] Filearr=Fromfile.listfiles ();  for(File file:filearr) {if(File.isfile ()) {filelist.add (file); }Else{                //take the recursive method to get all the files in the path's neutron path Filelist.addall (Getsourceallfiles (File.getpath ())); }        }        returnfileList; }        //get the relative path of the file in the folder to maintain the original structure (you can also create a new structure on demand)    PrivateString Getrelname (String from, File F) {String name=NULL; Name=f.getabsolutepath (). Replace ( from+"\\",""); Name=name.replace ("\\","/"); System. out. println ("the file relative path is:"+name); returnname; }        //Create a compressed file and store it in a new path     Public  voidCreatezipfile (String from, String dest) {List<File> Filelist=getsourceallfiles ( from); Zipoutputstream Zout=NULL;//generate a Zip output stream        Try{zout=NewZipoutputstream (NewFileOutputStream (NewFile (dest)); //put each file in a zip stream              for(File f:filelist) {InputStream is=NewFileInputStream (f); String name =getrelname ( from , f);//Get file relative path Keep file original structure zipentry en                  =new ZipEntry (New File (from). GetName () + "/" +name);
zipentry ens=new ZipEntry (F.getname ()); This simply compresses the individual files and no longer has the previous structure en.setsize (F.length ()); Zout.putnextentry (en); Zout.setcomment ("Test"); //reading the contents of a file intlen=0; byte[] buffer=New byte[1024x768]; while((len= is. Read (buffer))!=-1) {zout.write (buffer,0, Len); } zout.flush (); is. Close (); } zout.close (); } Catch(FileNotFoundException e) {e.printstacktrace (); } Catch(IOException e) {//TODO auto-generated Catch blockE.printstacktrace (); }finally{ if(zout!=NULL){ Try{zout.close (); } Catch(IOException e) {e.printstacktrace (); } } } } Public Static voidMain (string[] args) {zipFiletest1 test=NewZipFiletest1 (); Test.createzipfile ("d:\\edi_mulit_download\\5fd0998a07c84d9d924076f64fb726a7","D:\\sumzip\\co.zip"); }}

Java.util.zip Compress package File summary One: Compress files and folders below the file

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.