以下是一个工具类：
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
/**
* 压缩、解压 -> 工具类
* 更多示例,可见官网:http://commons.apache.org/proper/commons-compress/examples.html
* 总体说明:如果有同名的文件,那么压缩/解压后的文件将会覆盖原来的文件
*
* @author JustryDeng
* @DATE 2018年9月25日 下午12:26:47
*/
public class CompressionAndDecompressionUtils {
public static void main(String[]args){
try {
String[] filesPathArray={"D:/data/file/mock3.log","D:/data/file/mock4.log","D:/data/file/mock5.log"};
tarCompression(filesPathArray,"D:/data/file/ceshi.tar");
gzipCompression("D:/data/file/ceshi.tar","D:/data/file/ceshi.tar.gz");
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* tar打包压缩
*
* @param filesPathArray
* 要压缩的文件的全路径(数组)
* @param resultFilePath
* 压缩后的文件全文件名(.tar)
* @throws Exception
* @DATE 2018年9月25日 下午12:39:28
*/
public static boolean tarCompression(String[] filesPathArray, String resultFilePath) throws Exception {
System.out.println(" tarCompression -> Compression start!");
FileOutputStream fos = null;
TarArchiveOutputStream taos = null;
try {
fos = new FileOutputStream(new File(resultFilePath));
taos = new TarArchiveOutputStream(fos);
for (String filePath : filesPathArray) {
BufferedInputStream bis = null;
FileInputStream fis = null;
try {
File file = new File(filePath);
TarArchiveEntry tae = new TarArchiveEntry(file);
// 此处指明 每一个被压缩文件的名字,以便于解压时TarArchiveEntry的getName()方法获取到的直接就是这里指定的文件名
// 以(左边的)GBK编码将file.getName()“打碎”为序列,再“组装”序列为(右边的)GBK编码的字符串
tae.setName(new String(file.getName().getBytes("GBK"), "GBK"));
taos.putArchiveEntry(tae);
fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
int count;
byte data[] = new byte[1024];
while ((count = bis.read(data, 0, 1024)) != -1) {
taos.write(data, 0, count);
}
} finally {
taos.closeArchiveEntry();
if (bis != null)
bis.close();
if (fis != null)
fis.close();
}
}
} finally {
if (taos != null)
taos.close();
if (fos != null)
fos.close();
}
System.out.println(" tarCompression -> Compression end!");
return true;
}
/**
* tar拆包解压
*
* @param decompressFilePath
* 要被解压的压缩文件 全路径
* @param resultDirPath
* 解压文件存放绝对路径(目录)
* @throws Exception
* @DATE 2018年9月25日 下午12:39:43
*/
public static boolean tarDecompression(String decompressFilePath, String resultDirPath) throws Exception {
System.out.println(" tarDecompression -> Decompression start!");
TarArchiveInputStream tais = null;
FileInputStream fis = null;
try {
File file = new File(decompressFilePath);
fis = new FileInputStream(file);
tais = new TarArchiveInputStream(fis);
TarArchiveEntry tae = null;
while ((tae = tais.getNextTarEntry()) != null) {
BufferedOutputStream bos = null;
FileOutputStream fos = null;
try {
System.out.println(" already decompression file -> " + tae.getName());
String dir = resultDirPath + File.separator + tae.getName();// tar档中文件
File dirFile = new File(dir);
fos = new FileOutputStream(dirFile);
bos = new BufferedOutputStream(fos);
int count;
byte data[] = new byte[1024];
while ((count = tais.read(data, 0, 1024)) != -1) {
bos.write(data, 0, count);
}
} finally {
if (bos != null)
bos.close();
if (fos != null)
fos.close();
}
}
} finally {
if (tais != null)
tais.close();
if (fis != null)
fis.close();
}
System.out.println(" tarDecompression -> Decompression end!");
return true;
}
/**
* 对.tar文件进行gzip压缩
* 说明:我们一般先把多个文件tar打包为一个,然后再使用gzip进行压缩; 进而获得形如“abc.tar.gz”这样的压缩文件
* 注:这里暂时不再深入学习,以后有闲暇时间可深入了解如何压缩多个文件等
* 注:如果明确知道解压后的是什么类型的文件;那么可以直接指定解压后的文件类型(实际上也需要这么做);
* .tar.gz 解压后就是.tar文件,所以我们在解压时,给出的解压后的文件的全路径名就是以.tar结尾的
* @param filePath
* 要被压缩的压缩文件 全路径
* @param resultFilePath
* 压缩后的文件(全文件名 .gz)
* @throws IOException
* @DATE 2018年9月25日 下午2:50:22
*/
public static boolean gzipCompression(String filePath, String resultFilePath) throws IOException {
System.out.println(" gzipCompression -> Compression start!");
InputStream fin = null;
BufferedInputStream bis = null;
FileOutputStream fos = null;
BufferedOutputStream bos= null;
GzipCompressorOutputStream gcos = null;
try {
fin = Files.newInputStream(Paths.get(filePath));
bis = new BufferedInputStream(fin);
fos = new FileOutputStream(resultFilePath);
bos = new BufferedOutputStream(fos);
gcos = new GzipCompressorOutputStream(bos);
byte[] buffer = new byte[1024];
int read = -1;
while ((read = bis.read(buffer)) != -1) {
gcos.write(buffer, 0, read);
}
} finally {
if(gcos != null)
gcos.close();
if(bos != null)
bos.close();
if(fos != null)
fos.close();
if(bis != null)
bis.close();
if(fin != null)
fin.close();
}
System.out.println(" gzipCompression -> Compression end!");
return true;
}
/**
* 解压对.tar.gz文件至 .tar文件
* 说明:我们一般都是对.tar.gz文件进行gzip解压; 进而获得形如.tar文件;再进行解压
* 注:这里暂时不再深入学习,以后有闲暇时间可深入了解学习
*
* @param compressedFilePath
* 要被解压的压缩文件 全路径
* @param resultDirPath
* 解压文件存放绝对路径(目录)
* @throws IOException
* @DATE 2018年9月25日 下午4:35:09
*/
public static boolean gzipDecompression(String compressedFilePath, String resultDirPath) throws IOException {
System.out.println(" gzipDecompression -> Compression start!");
InputStream fin = null;
BufferedInputStream in = null;
OutputStream out = null;
GzipCompressorInputStream gcis = null;
try {
out = Files.newOutputStream(Paths.get(resultDirPath));
fin = Files.newInputStream(Paths.get(compressedFilePath));
in = new BufferedInputStream(fin);
gcis = new GzipCompressorInputStream(in);
final byte[] buffer = new byte[1024];
int n = 0;
while (-1 != (n = gcis.read(buffer))) {
out.write(buffer, 0, n);
}
} finally {
if(gcis != null)
gcis.close();
if(in != null)
in.close();
if(fin != null)
fin.close();
if(out != null)
out.close();
}
System.out.println(" gzipDecompression -> Compression end!");
return true;
}
/**
* zip压缩(注:与tar类似)
*
* @param filesPathArray
* 要压缩的文件的全路径(数组)
* @param resultFilePath
* 压缩后的文件全文件名(.tar)
* @throws Exception
* @DATE 2018年9月25日 下午17:55:28
*/
public static boolean zipCompression(String[] filesPathArray, String resultFilePath) throws Exception {
System.out.println(" zipCompression -> Compression start!");
ZipArchiveOutputStream zaos = null;
FileOutputStream fos = null;
try {
fos = new FileOutputStream(new File(resultFilePath));
zaos = new ZipArchiveOutputStream(fos);
for (String filePath : filesPathArray) {
FileInputStream fis = null;
BufferedInputStream bis = null;
try {
File file = new File(filePath);
// 第二个参数如果是文件全路径名,那么压缩时也会将路径文件夹也缩进去;
// 我们之压缩目标文件,而不压缩该文件所处位置的相关文件夹,所以这里我们用file.getName()
ZipArchiveEntry zae = new ZipArchiveEntry(file, file.getName());
zaos.putArchiveEntry(zae);
fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
int count;
byte data[] = new byte[1024];
while ((count = bis.read(data, 0, 1024)) != -1) {
zaos.write(data, 0, count);
}
} finally {
zaos.closeArchiveEntry();
if (bis != null)
bis.close();
if (fis != null)
fis.close();
}
}
} finally {
if (zaos != null)
zaos.close();
if (fos != null)
fos.close();
}
System.out.println(" zipCompression -> Compression end!");
return true;
}
/**
* zip解压(注:与tar类似)
*
* @param decompressFilePath
* 要被解压的压缩文件 全路径
* @param resultDirPath
* 解压文件存放绝对路径(目录)
* @throws Exception
* @DATE 2018年9月25日 下午18:39:43
*/
public static boolean zipDecompression(String decompressFilePath, String resultDirPath) throws Exception {
System.out.println(" zipDecompression -> Decompression start!");
ZipArchiveInputStream zais = null;
FileInputStream fis = null;
try {
File file = new File(decompressFilePath);
fis = new FileInputStream(file);
zais = new ZipArchiveInputStream(fis);
ZipArchiveEntry zae = null;
while ((zae = zais.getNextZipEntry()) != null) {
FileOutputStream fos = null;
BufferedOutputStream bos = null;
try {
System.out.println(" already decompression file -> " + zae.getName());
String dir = resultDirPath + File.separator + zae.getName();// tar档中文件
File dirFile = new File(dir);
fos = new FileOutputStream(dirFile);
bos = new BufferedOutputStream(fos);
int count;
byte data[] = new byte[1024];
while ((count = zais.read(data, 0, 1024)) != -1) {
bos.write(data, 0, count);
}
} finally {
if (bos != null)
bos.close();
if (fos != null)
fos.close();
}
}
} finally {
if (zais != null)
zais.close();
if (fis != null)
fis.close();
}
System.out.println(" zipDecompression -> Decompression end!");
return true;
}
}
在pom.xml需要引入的依赖：
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.9</version>
</dependency>