java 壓縮與解壓
//壓縮
private static void zip(String srcPath, String destPath)
throws FileNotFoundException, IOException {
File file =new File(srcPath);
FileOutputStream fo=new FileOutputStream(destPath);
CheckedOutputStream csumo=new CheckedOutputStream(fo,new CRC32());//CRC32 new Adler32()
ZipOutputStream zos=new ZipOutputStream(csumo);
BufferedOutputStream out=new BufferedOutputStream(zos);
//zos.setEncoding("utf-8");
//zos.setComment("long");
if(file.isDirectory()){
//壓縮資料夾
zipFolder(file,zos,out,"");
}else{
//壓縮檔案
zipFile
}
out.close();
System.out.println("Checksum-ZIP: "+csumo.getChecksum().getValue());
}
//壓縮資料夾，遞迴壓縮資料夾中所有檔案
public static void zipFolder(File f, ZipOutputStream zos,BufferedOutputStream out,StringzipPath) throws IOException{
if(f.isDirectory()){
File[] fs=f.listFiles();
if(fs.length==0)return;
if(zipPath!=null && !"".equals(zipPath)){
zipPath=zipPath+"/";
zos.putNextEntry(new ZipEntry(zipPath));
}
for(File ff:fs){
zipFolder(ff,zos,out,zipPath+ff.getName());
}
}else{
zos.putNextEntry(new ZipEntry(zipPath));
BufferedInputStream in=new BufferedInputStream(new FileInputStream(f));
int i;
while((i=in.read())!=-1){
out.write(i);
}
in.close();
out.flush();
}
}
//壓縮單個檔案
public static void zipFile(File f,ZipOutputStream zos,BufferedOutputStream out) throws IOException{
zos.putNextEntry(new ZipEntry(f.getName()));
BufferedInputStream in=new BufferedInputStream(new FileInputStream(f));
int i;
while((i=in.read())!=-1){
out.write(i);
}
in.close();
out.flush();
}
//解壓
public static void unZipFile(String srcPath, String destPath) throws IOException{
File f=new File(srcPath);
ZipFile zf=new ZipFile(f);
destPath=destPath+f.getName().replace(".zip", "/");
FileInputStream fis=new FileInputStream(srcPath);
CheckedInputStream csumi=new CheckedInputStream(fis,new CRC32());
ZipInputStream zis=new ZipInputStream(csumi);
java.util.zip.ZipEntry ze;
while((ze=zis.getNextEntry())!=null){
File temp=new File(destPath+ze.getName());
if(ze.isDirectory()){
temp.mkdirs();
}else{
InputStream in =zf.getInputStream(ze);
BufferedOutputStream out=new BufferedOutputStream(new FileOutputStream(temp));
int len;
while((len=in.read())!=-1){
out.write(len);
}
out.flush();
in.close();
out.close();
}
}
zis.close();
System.out.println("Checksum-UNZIP: "+csumi.getChecksum().getValue());
}