java压缩文件

//java压缩文件 zip
//压缩后文件名乱码 ，使用ant-1.5.1.jar中的ZipOutputStream 和ZipEntry

protected void zip(File root, String outpath) {
// 输出文件流
FileOutputStream fout = null;
// zip文件输出流
ZipOutputStream zout = null;
try {
// 文件名
String name = root.getName();
if (name.lastIndexOf(".") != -1) {
name = name.substring(0, name.lastIndexOf("."));
}
// zip输出流声明
fout = new FileOutputStream(outpath);                            //使用jdk自带的会中文乱码，现使用ant-1.5.1.jar中的ZipOutputStream
zout = new ZipOutputStream(fout);
// 压缩
zip(root, zout, root.getName());
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
try {
zout.close();
fout.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}

protected void zip(File root, ZipOutputStream zout, String entryName)
throws Exception {
if (root.isFile()) {// 压缩文件
FileInputStream fin = new FileInputStream(root);
byte[] buff = new byte[4096];           
int len = 0;
ZipEntry entry = new ZipEntry(new String(entryName.getBytes()));   //使用jdk自带的会中文乱码，现使用ant-1.5.1.jar中的ZipEntry
zout.putNextEntry(entry);
while ((len = fin.read(buff)) != -1) {
zout.write(buff, 0, len);
}
zout.closeEntry();
fin.close();

root.delete();   //删除源文件
} else if (root.isDirectory()) {// 压缩文件夹
File[] files = root.listFiles();
if (files.length == 0) {
ZipEntry entry = new ZipEntry(entryName + "/");
zout.putNextEntry(entry);
zout.closeEntry();
return;
}
for (int fileIndex = 0; fileIndex < files.length; fileIndex++) {
File tmp = files[fileIndex];
zip(tmp, zout, entryName + "/" + tmp.getName());
}
}
}
附带 ant-1.5.1.jar