/**

* 多文件壓縮

*

* @author Administrator

*

*/

public class ZipCompress {

public static void main(String args[]) {

String[] filepaths = { "D:\\zip1.txt", "D:\\zip2.txt" };

try {

FileOutputStream f = new FileOutputStream("D://test.zip");

// 輸出校驗流,采用Adler32更快

CheckedOutputStream csum = new CheckedOutputStream(f, new Adler32());

//創(chuàng)建壓縮輸出流

ZipOutputStream zos = new ZipOutputStream(csum);

BufferedOutputStream out = new BufferedOutputStream(zos);

//設(shè)置Zip文件注釋

zos.setComment("A test of java Zipping");

for (String s : filepaths) {

System.out.println("Writing file " + s);

//針對單個文件建立讀取流

BufferedReader bin = new BufferedReader(new FileReader(s));

//ZipEntry ZIP 文件條目

//putNextEntry 寫入新條目，并定位到新條目開始處

zos.putNextEntry(new ZipEntry(s));

int c;

while ((c = bin.read()) != -1) {

out.write(c);

}

bin.close();

out.flush();

}

out.close();

FileInputStream fi = new FileInputStream("D://test.zip");

CheckedInputStream csumi = new CheckedInputStream(fi, new Adler32());

ZipInputStream in2 = new ZipInputStream(csumi);

BufferedInputStream bis = new BufferedInputStream(in2);

ZipEntry ze;

while ((ze = in2.getNextEntry()) != null) {

System.out.println("Reader File " + ze);

int x;

while ((x = bis.read()) != -1)

System.out.println(x);

}

//利用ZipFile解壓壓縮文件

ZipFile zf = new ZipFile("D:\\test.zip");

Enumeration e = zf.entries();

while(e.hasMoreElements()){

ZipEntry ze2 = (ZipEntry) e.nextElement();

System.out.println("File name : "+ze2);

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

}

/**

* 文件壓縮

* 把文件壓縮成GZIP 單一的流數(shù)據(jù) 并不是互異的數(shù)據(jù)

* GZIPOutputStream的使用

* @author Administrator

*

*/

public class GzipPcompress {

public static void main(String args[]) {

try {

BufferedReader in = new BufferedReader(new FileReader("D:\\gziptest.txt"));

BufferedOutputStream out = new BufferedOutputStream(

new GZIPOutputStream(new FileOutputStream("D:\\test.gz")));

System.out.println("Writing file");

int c;

while ((c = in.read()) != -1) {

out.write(c);

}

in.close();

out.close();

System.out.println("Reading file");

BufferedReader in2 = new BufferedReader(new InputStreamReader(

new GZIPInputStream(new FileInputStream("D:\\test.gz"))));

String s;

while((s=in2.readLine()) != null){

System.out.println(s);

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

}

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