1，压缩的
import
java.io.BufferedInputStream;
import
java.io.BufferedOutputStream;
import
java.io.File;
import
java.io.FileInputStream;
import
java.io.FileOutputStream;
import
java.util.zip.ZipEntry;
import
java.util.zip.ZipOutputStream;
public
class
Zip
{
static
final
int
BUFFER
=
2048
;
public
static
void
main(String argv[])
{
try
{
BufferedInputStream origin
=
null
;
FileOutputStream dest
=
new
FileOutputStream(
"
E:\\test\\myfiles.zip
"
);
ZipOutputStream out
=
new
ZipOutputStream(
new
BufferedOutputStream(
dest));
byte
data[]
=
new
byte
[BUFFER];
File f
=
new
File(
"
e:\\test\\a\\
"
);
File files[]
=
f.listFiles();
for
(
int
i
=
0
; i
<
files.length; i
++
)
{
FileInputStream fi
=
new
FileInputStream(files[i]);
origin
=
new
BufferedInputStream(fi, BUFFER);
ZipEntry entry
=
new
ZipEntry(files[i].getName());
out.putNextEntry(entry);
int
count;
while
((count
=
origin.read(data,
0
, BUFFER))
!=
-
1
)
{
out.write(data,
0
, count);
}
origin.close();
}
out.close();
}
catch
(Exception e)
{
e.printStackTrace();
}
}
}
2，解压缩的。
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class UnZip {
static final int BUFFER = 2048;
public static void main(String argv[]) {
try {
String fileName = "E:\\test\\myfiles.zip";
String filePath = "E:\\test\\";
ZipFile zipFile = new ZipFile(fileName);
Enumeration emu = zipFile.entries();
int i=0;
while(emu.hasMoreElements()){
ZipEntry entry = (ZipEntry)emu.nextElement();
//会把目录作为一个file读出一次，所以只建立目录就可以，之下的文件还会被迭代到。
if (entry.isDirectory())
{
new File(filePath + entry.getName()).mkdirs();
continue;
}
BufferedInputStream bis = new BufferedInputStream(zipFile.getInputStream(entry));
File file = new File(filePath + entry.getName());
//加入这个的原因是zipfile读取文件是随机读取的，这就造成可能先读取一个文件
//而这个文件所在的目录还没有出现过，所以要建出目录来。
File parent = file.getParentFile();
if(parent != null && (!parent.exists())){
parent.mkdirs();
}
FileOutputStream fos = new FileOutputStream(file);
BufferedOutputStream bos = new BufferedOutputStream(fos,BUFFER);
int count;
byte data[] = new byte[BUFFER];
while ((count = bis.read(data, 0, BUFFER)) != -1)
{
bos.write(data, 0, count);
}
bos.flush();
bos.close();
bis.close();
}
zipFile.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
posted on 2008-01-19 15:31
无声 阅读(443)
评论(0) 编辑 收藏 所属分类:
职场生活