常见的压缩文件格式有zip、tar、rar(包含rar4)、7z、xz等，针对不同的压缩格式解压需要有不同的代码实现，适配工作比较大，故将常见的压缩文件解压逻辑封装为工具类，供后续使用。
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| <!-- https://mvnrepository.com/artifact/net.sf.sevenzipjbinding/sevenzipjbinding -->
<dependency>
<groupId>net.sf.sevenzipjbinding</groupId>
<artifactId>sevenzipjbinding</artifactId>
<version>16.02-2.01</version>
</dependency>
<!-- https://mvnrepository.com/artifact/net.sf.sevenzipjbinding/sevenzipjbinding-all-platforms -->
<dependency>
<groupId>net.sf.sevenzipjbinding</groupId>
<artifactId>sevenzipjbinding-all-platforms</artifactId>
<version>16.02-2.01</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-compress -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.27.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.tukaani/xz -->
<dependency>
<groupId>org.tukaani</groupId>
<artifactId>xz</artifactId>
<version>1.9</version>
</dependency>
|
- 解压缩工具类：DecompressUtil.java
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| package site.zhaoyangjue.decompression.utils;
import net.sf.sevenzipjbinding.IInArchive;
import net.sf.sevenzipjbinding.SevenZip;
import net.sf.sevenzipjbinding.impl.RandomAccessFileInStream;
import net.sf.sevenzipjbinding.impl.RandomAccessFileOutStream;
import net.sf.sevenzipjbinding.simple.ISimpleInArchive;
import net.sf.sevenzipjbinding.simple.ISimpleInArchiveItem;
import org.apache.commons.compress.archivers.ArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
import org.apache.commons.io.IOUtils;
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
public class DecompressUtil {
/**
* 解压常见的压缩文件：zip|tar|rar(包含rar4和rar5)|7z
* @param file 文件
* @param targetPath 保存路径，为目录
*/
public static void decompressCommonFile(File file, String targetPath){
RandomAccessFileInStream inStream = null;
IInArchive inArchive = null;
try {
RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r");
inStream = new RandomAccessFileInStream(randomAccessFile);
inArchive = SevenZip.openInArchive(null, inStream);
ISimpleInArchive simpleInArchive = inArchive.getSimpleInterface();
ISimpleInArchiveItem[] archiveItems = simpleInArchive.getArchiveItems();
File outFile = new File(targetPath);
for (ISimpleInArchiveItem item : archiveItems) {
RandomAccessFileOutStream rafo = null;
try {
File tempFile;
if (item.isFolder()) {
new File(outFile , item.getPath()).mkdirs();
continue;
} else {
tempFile = new File(outFile , item.getPath());
if (! tempFile.getParentFile().exists()) {
tempFile.getParentFile().mkdirs();
}
}
rafo = new RandomAccessFileOutStream(new RandomAccessFile(tempFile , "rw"));
item.extractSlow(rafo);
} finally {
if (rafo != null) {
rafo.close();
}
}
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
IOUtils.closeQuietly(inStream);
IOUtils.closeQuietly(inArchive);
}
}
/**
* 解压缩xz格式的文件
* @param file 文件
* @param targetPath 保存路径，为目录
*/
public static void decompressXZFile(File file, String targetPath){
try(FileInputStream fis = new FileInputStream(file);
XZCompressorInputStream xzIn = new XZCompressorInputStream(fis);
TarArchiveInputStream tarIn = new TarArchiveInputStream(xzIn)){
ArchiveEntry entry;
while ((entry = tarIn.getNextEntry()) != null) {
if (entry.isDirectory()) {
File directory = new File(targetPath,entry.getName());
directory.mkdirs();
} else {
File outputFile = new File(targetPath,entry.getName());
FileOutputStream fos = new FileOutputStream(outputFile);
byte[] buffer = new byte[2048];
int length;
while ((length = tarIn.read(buffer)) != -1) {
fos.write(buffer,0,length);
}
fos.close();
}
}
} catch (FileNotFoundException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/**
* 将MultipartFile转换为file
* @param file MultipartFile
* @return 转换之后的file
* @throws Exception
*/
public static File multipartFileToFile(MultipartFile file) throws Exception {
File toFile = null;
if (file.equals("") || file.getSize() <= 0) {
file = null;
} else {
InputStream ins = null;
ins = file.getInputStream();
toFile = new File(file.getOriginalFilename());
inputStreamToFile(ins, toFile);
ins.close();
}
return toFile;
}
private static void inputStreamToFile(InputStream ins, File file) {
try {
OutputStream os = new FileOutputStream(file);
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
os.write(buffer, 0, bytesRead);
}
os.close();
ins.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
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| 原始压缩包会保存在项目的根目录下，如后续无额外的操作，则可在外层调用处删除。
可先将接口接受到的MultipartFile转换为File,再行调用decompressCommonFile方法或decompressXZFile方法。
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