org.voovan.tools.TZip Maven / Gradle / Ivy
package org.voovan.tools;
import java.io.*;
import java.util.zip.*;
/**
* 压缩算法
*
* @author helyho
*
* Voovan Framework.
* WebSite: https://github.com/helyho/Voovan
* Licence: Apache v2 License
*/
public class TZip {
/**
* GZip 解压缩
* @param encodeBytes 待解压字节
* @return 解压后的字节
* @throws IOException IO 异常
*/
public static byte[] decodeGZip(byte[] encodeBytes) throws IOException{
GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(encodeBytes));
byte[] result = TStream.readAll(gzipInputStream);
gzipInputStream.close();
return result;
}
/**
* GZip 解压文件
*
* @param inputFile 源文件
* @param outputFile 目标文件
* @throws IOException IO异常
*/
public static void decodeGZip(File inputFile, File outputFile)
throws IOException {
FileInputStream fin = null;
GZIPInputStream gzin = null;
FileOutputStream fout = null;
try {
fin = new FileInputStream(inputFile);
fout = new FileOutputStream(outputFile);
gzin = new GZIPInputStream(fin);
byte[] buf = new byte[1024];
int num;
while ((num = gzin.read(buf, 0, buf.length)) != -1) {
fout.write(buf, 0, num);
}
} finally {
if (fout != null)
fout.close();
if (gzin != null)
gzin.close();
if (fin != null)
fin.close();
}
}
/**
* GZIP 压缩
* @param sourceBytes 待压缩字节
* @return 压缩后的字节
* @throws IOException IO 异常
*/
public static byte[] encodeGZip(byte[] sourceBytes) throws IOException{
ByteArrayOutputStream zipedBodyOutputStream = new ByteArrayOutputStream();
GZIPOutputStream gzipOutputStream = new GZIPOutputStream(zipedBodyOutputStream);
gzipOutputStream.write(sourceBytes);
gzipOutputStream.finish();
byte[] result = zipedBodyOutputStream.toByteArray();
gzipOutputStream.close();
zipedBodyOutputStream.close();
return result;
}
/**
* GZip 文件压缩处理
*
* @param inputFile 源文件
* @param outputFile 目标文件
* @throws IOException IO异常
*/
public static void encodeGZip(File inputFile, File outputFile) throws IOException{
FileInputStream fin = null;
FileOutputStream fout = null;
GZIPOutputStream gzout = null;
try {
fin = new FileInputStream(inputFile);
fout = new FileOutputStream(outputFile);
gzout = new GZIPOutputStream(fout);
byte[] buf = new byte[1024];
int num;
while ((num = fin.read(buf)) != -1) {
gzout.write(buf, 0, num);
}
} finally {
if (gzout != null)
gzout.close();
if (fout != null)
fout.close();
if (fin != null)
fin.close();
}
}
/**
* Zip 解压缩
* @param encodeBytes 待解压字节
* @return 解压后的字节
* @throws IOException IO 异常
*/
public static byte[] decodeZip(byte[] encodeBytes) throws IOException{
ZipInputStream zipInputStream = new ZipInputStream(new ByteArrayInputStream(encodeBytes));
byte[] result = TStream.readAll(zipInputStream);
zipInputStream.close();
return result;
}
/**
* ZIP 压缩
* @param sourceBytes 待压缩字节
* @return 压缩后的字节
* @throws IOException IO 异常
*/
public static byte[] encodeZip(byte[] sourceBytes) throws IOException{
ZipEntry zipEntry = new ZipEntry("VoovanZipEntry");
ByteArrayOutputStream zipedBodyOutputStream = new ByteArrayOutputStream();
ZipOutputStream zipOutputStream = new ZipOutputStream(zipedBodyOutputStream);
zipOutputStream.putNextEntry(zipEntry);
zipOutputStream.write(sourceBytes);
zipOutputStream.finish();
byte[] result = zipedBodyOutputStream.toByteArray();
zipedBodyOutputStream.close();
zipOutputStream.close();
return result;
}
/**
* 从 Zip 文件中读取指定的被压缩文件
* @param zipFilePath zip 文件路径
* @param filePath zip 文件中压缩文件路径
* @return 文件内容
* @throws IOException IO 异常
*/
public static byte[] loadFileFromZip(String zipFilePath, String filePath) throws IOException {
try(ZipFile zipFile = new ZipFile(zipFilePath)) {
ZipEntry zipEntry = zipFile.getEntry(filePath);
try (InputStream inputStream = zipFile.getInputStream(zipEntry)) {
return TStream.readAll(inputStream);
}
}
}
/**
* deflater 解压缩
* @param encodeBytes 待解压字节
* @return 解压后的字节
* @throws IOException IO 异常
*/
public static byte[] Inflater(byte[] encodeBytes) throws IOException{
InflaterInputStream inflaterInputStream = new InflaterInputStream(new ByteArrayInputStream(encodeBytes));
byte[] result = TStream.readAll(inflaterInputStream);
inflaterInputStream.close();
return result;
}
/**
* deflater 解压文件
*
* @param inputFile 源文件
* @param outputFile 目标文件
* @throws IOException IO异常
*/
public static void Inflater(File inputFile, File outputFile)
throws IOException {
FileInputStream fin = null;
InflaterInputStream ifin = null;
FileOutputStream fout = null;
try {
fin = new FileInputStream(inputFile);
fout = new FileOutputStream(outputFile);
ifin = new InflaterInputStream(fin);
byte[] buf = new byte[1024];
int num;
while ((num = ifin.read(buf, 0, buf.length)) != -1) {
fout.write(buf, 0, num);
}
} finally {
if (fout != null)
fout.close();
if (ifin != null)
ifin.close();
if (fin != null)
fin.close();
}
}
/**
* Inflater 压缩
* @param sourceBytes 待压缩字节
* @return 压缩后的字节
* @throws IOException IO 异常
*/
public static byte[] Deflater(byte[] sourceBytes) throws IOException{
ByteArrayOutputStream zipedBodyOutputStream = new ByteArrayOutputStream();
DeflaterOutputStream deflaterOutputStream = new DeflaterOutputStream(zipedBodyOutputStream);
deflaterOutputStream.write(sourceBytes);
deflaterOutputStream.finish();
byte[] result = zipedBodyOutputStream.toByteArray();
deflaterOutputStream.close();
zipedBodyOutputStream.close();
return result;
}
/**
* Inflater 文件压缩处理
*
* @param inputFile 源文件
* @param outputFile 目标文件
* @throws IOException IO异常
*/
public static void Deflater(File inputFile, File outputFile) throws IOException{
FileInputStream fin = null;
FileOutputStream fout = null;
DeflaterOutputStream dfout = null;
try {
fin = new FileInputStream(inputFile);
fout = new FileOutputStream(outputFile);
dfout = new DeflaterOutputStream(fout);
byte[] buf = new byte[1024];
int num;
while ((num = fin.read(buf)) != -1) {
dfout.write(buf, 0, num);
}
} finally {
if (dfout != null)
dfout.close();
if (fout != null)
fout.close();
if (fin != null)
fin.close();
}
}
}