Java compressed gzip for simple compression, zip for multi-file saving

Java compressed gzip for simple compression, zip for multi-file saving

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Package Org.rui.io.compress;import Java.io.bufferedoutputstream;import Java.io.bufferedreader;import Java.io.fileinputstream;import Java.io.fileoutputstream;import Java.io.filereader;import Java.io.inputstreamreader;import Java.util.zip.gzipinputstream;import java.util.zip.gzipoutputstream;/** * Simple compression with gzip * @author Lenovo * */public class Gzipcompress {static String path= "d:\\users\\liangrui\\workspace\\thinking \\src\\org\\rui\\io\\compress\\ "; static String [] arg=new string[]{path+" Gzipcompress.java "};p ublic static void Main ( String[] args) throws Exception {//inbufferedreader in=new bufferedreader (New FileReader (arg[0]));// Outbufferedoutputstream out=new Bufferedoutputstream (New Gzipoutputstream (New FileOutputStream ("test.gz")); System.out.println ("Writing file"), int c;while ((C=in.read ())!=-1) {out.write (c);} Closein.close (); Out.close (); System.out.println ("Reading file================"); BufferedReader br=new BufferedReader (New InputStreamReader (New GzipinputstreamM ("test.gz"))); String S;while ((S=br.readline ())!=null) System.out.println (s);}}

Package Org.rui.io.compress;import Java.io.bufferedinputstream;import Java.io.bufferedoutputstream;import Java.io.bufferedreader;import Java.io.file;import Java.io.fileinputstream;import java.io.FileNotFoundException; Import Java.io.fileoutputstream;import Java.io.filereader;import Java.util.enumeration;import Java.util.zip.adler32;import Java.util.zip.checkedinputstream;import Java.util.zip.checkedoutputstream;import Java.util.zip.zipentry;import Java.util.zip.zipfile;import Java.util.zip.zipinputstream;import java.util.zip.zipoutputstream;/** * Multi-File Save with Zip * @author Lenovo * */public class Zipcompress {//static String path= "d:\\u Sers\\liangrui\\workspace\\thinking\\src\\org\\rui\\io\\compress\\ "; static String path=new File (" "). GetAbsolutePath () + "\\src\\org\\rui\\io\\compress\\"; static String [] arg=new string[]{path+ "Gzipcompress.java", path+ "Zipcompress.java"};p ublic static void Main (string[] args) throws Exception {//outfileoutputstream f=new FileOutputStream ("Test.zip"); CheckedoutpuTStream cos=new Checkedoutputstream (f,new Adler32 ()); Zipoutputstream zos=new zipoutputstream (COS);//outbufferedoutputstream out=new Bufferedoutputstream (ZOS); Zos.setcomment ("A test of Java zipping"); for (String S:arg) {System.out.println ("writing file" +s); BufferedReader in =new BufferedReader (new FileReader (s));//zos.putnextentry (new ZipEntry (s)); int C;while ((C=in.read ( ))!=-1) {out.write (c);} In.close (); Out.flush ();} Out.close ();//checksum valid only after the file has been closed! System.out.println ("Reading file================"); FileInputStream fi=new FileInputStream ("Test.zip"); Checkedinputstream csumi=new Checkedinputstream (fi,new Adler32 ()); Zipinputstream zis=new Zipinputstream (Csumi); Bufferedinputstream bis=new Bufferedinputstream (ZiS); ZipEntry Ze;while ((Ze=zis.getnextentry ())!=null) {System.out.println ("Reading file" +ze); int X;while ((X=bis.read ()) !=-1) {//system.out.print ((char) x); System.out.write (x);}} if (arg.length==1) System.out.println ("Checksum:" +csumi.getchecksum (). GetValue ());Bis.close ();//alternative to open and read zip fileszipfile zf=new zipfile ("Test.zip"); Enumeration E=zf.entries (); while (E.hasmoreelements ()) {ZipEntry ze2= (zipentry) e.nextelement (); System.out.println ("File:" +ze2);//...and extract the data as Before}/*if (arg.length==1) */}}

Java compressed gzip for simple compression, zip for multi-file saving