所有的方法都是对压缩包里的文件进行遍历写出，可以通过添加过滤对指定文件进行解压。
首先是依赖：
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.18<version>
</dependency>
<-- 解压rar所需的依赖 -->
<dependency>
<groupId>com.github.junrar</groupId>
<artifactId>junrar</artifactId>
<version>4.0.0<version>
</dependency>
zip包的解压方法：
public static List<String> unPackZip(File zipFile, String unpackFolder) {
List<String> fileNames = new ArrayList<>();
String fileEncoding = null;
try {
fileEncoding = checkEncoding(zipFile);
} catch (IOException e1) {
e1.printStackTrace();
}
String fileEncoding1 = (fileEncoding != null) ? fileEncoding : "UTF-8";
try (ZipArchiveInputStream zais = new ZipArchiveInputStream(new BufferedInputStream(new FileInputStream(zipFile), 4096), fileEncoding1)) {
ZipArchiveEntry entry = null;
while ((entry = zais.getNextZipEntry()) != null) {
//遍历压缩包，如果进行有选择解压，可在此处进行过滤
File tmpFile = new File(unpackFolder, entry.getName());
if (entry.isDirectory()) {
tmpFile.mkdirs();
} else {
fileNames.add(entry.getName());
File file = new File(tmpFile.getAbsolutePath());
if (!file.exists()) {
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
}
try (OutputStream os = new BufferedOutputStream(new FileOutputStream(tmpFile), 4096)) {
IOUtils.copy(zais, os);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return fileNames;
}
//判断字符编码
private static String checkEncoding(File file) throws IOException {
InputStream in = new FileInputStream(file);
byte[] b = new byte[3];
try {
int i = in.read(b);
} catch (IOException e) {
e.printStackTrace();
} finally {
in.close();
}
if (b[0] == -1 && b[1] == -2) {
return "UTF-16";
} else if (b[0] == -2 && b[1] == -1) {
return "Unicode";
} else if (b[0] == -17 && b[1] == -69 && b[2] == -65) {
return "UTF-8";
} else {
return "GBK";
}
}
rar包的解压方法：
public static List<String> unPackRar(File rarFileName, String unpackFolder) {
List<String> fileNames = new ArrayList<>();
try (Archive a = new Archive(new FileInputStream(rarFileName))) {
FileHeader fh = a.nextFileHeader();
while (fh != null) {
//遍历压缩包，如果进行有选择解压，可在此处进行过滤
File file;
if (existZH(fh.getFileNameW())) {
file = new File(unpackFolder + File.separator + fh.getFileNameW());
} else {
file = new File(unpackFolder + File.separator + fh.getFileNameString());
}
if (fh.isDirectory()) {
file.mkdirs();
} else {
String absolutePath = file.getAbsolutePath();
if (absolutePath.contains("\\")) {
file = new File(absolutePath.replace("\\", File.separator));
}
if (!file.exists()) {
// 相对路径可能多级，可能需要创建父目录.
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
if (!file.createNewFile()) {
}
}
try (FileOutputStream os = new FileOutputStream(file)) {
a.extractFile(fh, os);
}
fileNames.add(file.getName());
}
fh = a.nextFileHeader();
}
} catch (Exception e) {
e.printStackTrace();
}
return fileNames;
}
public static boolean existZH(String str) {
//是否存在中文的正则表达式
String regEx = "[\\u4e00-\\u9fa5]";
Pattern p = Pattern.compile(regEx);
Matcher m = p.matcher(str);
return m.find();
}
tar包的解压方法：
public static List<String> unPackTar(File file, String unpackFolder) throws IOException {
List<String> fileNames = new ArrayList<>();
try (FileInputStream inputStream = new FileInputStream(file);
TarArchiveInputStream iStream = new TarArchiveInputStream(inputStream);
BufferedInputStream bis = new BufferedInputStream(iStream);) {
TarArchiveEntry entry = iStream.getNextTarEntry();
while (entry != null) {
//遍历压缩包，如果进行有选择解压，可在此处进行过滤
File unpackFolderFile = new File(unpackFolder);
File tmpFile = new File(unpackFolder, entry.getName());
if (!unpackFolderFile.exists()) {
unpackFolderFile.mkdirs();
}
if (entry.isDirectory()) {
tmpFile.mkdirs();
} else {
fileNames.add(entry.getName());
try (OutputStream out = new FileOutputStream(tmpFile)) {
int length ;
byte[] b = new byte[2048];
while ((length = bis.read(b)) != -1) {
out.write(b, 0, length);
}
out.flush();
}
}
entry = (TarArchiveEntry) iStream.getNextEntry();
}
}
return fileNames;
}
tar.gz包的解压方法：
public static List<String> unPackTarGz(File file, final String unpackFolder)
throws IOException, ArchiveException {
List<String> fileNames = new ArrayList<>();
try (FileInputStream fileInputStream = new FileInputStream(file);
GZIPInputStream iStream = new GZIPInputStream(fileInputStream);
ArchiveInputStream in = new ArchiveStreamFactory().createArchiveInputStream("tar", iStream);
BufferedInputStream bis = new BufferedInputStream(in)) {
TarArchiveEntry entry;
while ((entry = (TarArchiveEntry) in.getNextEntry()) != null) {
//遍历压缩包，如果进行有选择解压，可在此处进行过滤
File unpackFolderFile = new File(unpackFolder);
if (!unpackFolderFile.exists()) {
unpackFolderFile.mkdirs();
}
if (entry.getName().contains(".tar")) {
unPackTar(file, unpackFolder);
break;
}
File tmpFile = new File(unpackFolder, entry.getName());
if (!unpackFolderFile.exists()) {
unpackFolderFile.mkdirs();
}
if (entry.isDirectory()) {
tmpFile.mkdirs();
} else {
fileNames.add(entry.getName());
try (OutputStream out = new FileOutputStream(tmpFile)) {
int length;
byte[] b = new byte[2048];
while ((length = bis.read(b)) != -1) {
out.write(b, 0, length);
}
out.flush();
}
}
}
}
return fileNames;
}
