【转】JAVA解压.TAR.Z及.ZIP文件

时间:2023-12-18 19:15:26

 解压.ZIP文件

package app.qdupr.Method;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration; import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile; /**
* ZIP文件解压
* @author Administrator
*
*/
public class ZipUncompress { private static int bufSize = 8096; //size of byte public static void main(String[] args) throws Exception
{ String tmpFile = "C:\\Users\\Administrator\\Desktop\\20151101.rar";
ZipUncompress.unZip(tmpFile, tmpFile.substring(0, tmpFile.lastIndexOf(".")));
// -----------------
System.out.println("Usage:");
System.out.println("解压:java ZipFileUtils -unzip fileName.zip");
System.out.println();
}
public static String unZip(String unZipFileName, String destFileName)
{
File unzipFile = new File(unZipFileName); if(destFileName == null || destFileName.trim().length() == 0)
{
destFileName = unzipFile.getParent();
} File destFile;
ZipFile zipFile = null;
try
{
zipFile = new ZipFile(unzipFile, "GBK");
for(Enumeration entries = zipFile.getEntries(); entries.hasMoreElements();)
{
ZipEntry entry = (ZipEntry) entries.nextElement();
destFile = new File(destFileName, entry.getName()); unZipFile(destFile, zipFile, entry); //执行解压
}
} catch(Exception e)
{
return e.getMessage();
}
finally
{
try
{
assert zipFile != null;
zipFile.close();
} catch(Exception e)
{
e.printStackTrace();
}
}
return null;
}
private static void unZipFile(File destFile, ZipFile zipFile, ZipEntry entry)
throws IOException
{
InputStream inputStream;
FileOutputStream fileOut;
if(entry.isDirectory()) //是目录,则创建之
{
destFile.mkdirs();
}
else //是文件
{
//如果指定文件的父目录不存在,则创建之.
File parent = destFile.getParentFile();
if(parent != null && !parent.exists())
{
parent.mkdirs();
} inputStream = zipFile.getInputStream(entry); fileOut = new FileOutputStream(destFile);
byte[] buf = new byte[bufSize];
int readedBytes;
while((readedBytes = inputStream.read(buf)) > 0)
{
fileOut.write(buf, 0, readedBytes);
}
fileOut.close(); inputStream.close();
}
}
}
解压.TAR.Z文件
所需jar包 commons-compress-1.7及以上
package app.qdupr.Method;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException; import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.z.ZCompressorInputStream;
/**
* 自动解压.Z格式的文件
* @author Administrator
*
*/ public class ZCompress { /**
* 测试方法
* @param args
*/
public static void main(String[] args) {
ZCompress zip = new ZCompress();
File dir = new File("E:\\Test");
File[] subs = dir.listFiles();
for (File sub : subs) { String file=sub.getParent()+File.separator+sub.getName();
zip.uncompress(file);
System.out.println(file);
}
} /**
* 获取文件夹下全部文件
* @param file
*/
public static void findAllfile(String file) {
ZCompress zip = new ZCompress();
File dir = new File(file);
File[] subs = dir.listFiles();
for (File sub : subs) {
String newfile=sub.getParent()+File.separator+sub.getName();
zip.uncompress(newfile);
}
}
/**
* .Z文件解压
* @param file
*/
public void uncompress(String file) {
//File file =new File("E:\\BEA20151101.Z");
ZCompress.deCompressTZFile(file);
}
/**
* 将String型转换为File类型
* @param file
* @return
*/
public static File deCompressTZFile(String file) {
return deCompressZFile(new File(file));
}
/**
* 执行解压
* @param file
* @return
*/
private static File deCompressZFile(File file) {
int buffersize = 2048;
FileOutputStream out = null;
ZCompressorInputStream zIn = null;
try {
FileInputStream fin = new FileInputStream(file);
BufferedInputStream in = new BufferedInputStream(fin);
//解压后的文件存放路径及文件名
String name = file.getName().substring(0, file.getName().indexOf("."));
File outFile = new File("E:\\File\\"+name);
out = new FileOutputStream(outFile);
zIn = new ZCompressorInputStream(in);
final byte[] buffer = new byte[buffersize];
int n = 0;
while (-1 != (n = zIn.read(buffer))) {
out.write(buffer, 0, n);
}
return outFile;
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
try {
out.close();
zIn.close();
} catch (IOException e) {
e.printStackTrace();
}
}
} /**
* .TAR格式文件解压
* @param file
*/
private static void deCompressTARFile(File file) {
int buffersize = 2048;
String basePath = file.getParent() + File.separator;
TarArchiveInputStream is = null;
try {
is = new TarArchiveInputStream(new FileInputStream(file));
while (true) {
TarArchiveEntry entry = is.getNextTarEntry();
if (entry == null) {
break;
}
if (entry.isDirectory()) {// 这里貌似不会运行到,跟ZipEntry有点不一样
new File(basePath + entry.getName()).mkdirs();
} else {
FileOutputStream os = null;
try {
File f = new File(basePath + entry.getName());
if (!f.getParentFile().exists()) {
f.getParentFile().mkdirs();
}
if (!f.exists()) {
f.createNewFile();
}
os = new FileOutputStream(f);
byte[] bs = new byte[buffersize];
int len = -1;
while ((len = is.read(bs)) != -1) {
os.write(bs, 0, len);
}
os.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
os.close();
}
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
is.close();
file.delete();
} catch (IOException e) {
e.printStackTrace();
}
} } }