Java Zip/unzip Files Records

In recent projects using Java to implement the Zip/unzip XML file functionality, Java comes with the API to facilitate the implementation of file compression and decompression, record the relevant code.

1. Zip source file to destination file with source file name

 Public void Zip(file src, file dest) {InputStreaminch=NULL; Zipoutputstream zos=NULL;Try{Zos =NewZipoutputstream (NewFileOutputStream (dest)); ZipEntry ze=NewZipEntry (Src.getname ()); Zos.putnextentry (Ze);inch=NewFileInputStream (SRC); Ioutils.copy (inch, Zos); }Catch(IOException e) {Log.error ("fail to zip file:"+ src.getname () +"To:"+ Dest.getname ());ThrowE }finally{if(NULL! = Zos) {Try{zos.closeentry (); }Catch(IOException ex) {}} ioutils.closequietly (inch); ioutils.closequietly (ZOS);}

1. Extract all files from the source file zip to the destination folder

  Public void UnZip(File file, String OutputFolder) {File folder =NewFile (OutputFolder);if(Folder.exists () && folder.isfile ()) {ThrowIllegalArgumentException ("Not an exists folder"); }//create Output Directory is not exists     if(!folder.exists () &&!folder.mkdir ()) {ThrowIllegalstatusexception ("fail to create Dest folder"); } InputStreaminch=NULL; OutputStream out=NULL; ZipFile ZipFile =NewZipFile (file); Enumeration EMU = Zipfile.entries (); while(Emu.hasmoreelements ()) {ZipEntry entry = (zipentry) emu.nextelement ();//Create directory           if(Entry.isdirectory ()) {NewFile (OutputFolder + entry.getname ()). Mkdirs ();Continue; }//File copyInputStream is= Zipfile.getinputstream (entry); File File =NewFile (OutputFolder + entry.getname ());//Note: ZipFile read files are randomly read, may read a file, and then read the folder, so you may want to create a directory firstFile parent = File.getparentfile ();if(Parent! =NULL&& (!parent.exists ())) {parent.mkdirs (); } out=NewFileOutputStream (file); ioutils.closequietly (inch); ioutils.closequietly ( out); }     }Catch(IOException ex) {Log.error (Ex.getmessage ());ThrowEx }finally{if(NULL! = ZipFile) {Try{Zipfile.close (); }Catch(IOException e) {}} ioutils.closequietly (inch); ioutils.closequietly ( out); } }

The most important thing is that the file is too large, ioutils copy consumes CPU high.

Java Zip/unzip Files Records