package com.web.framework.slms.module.work;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.Arrays;
import java.util.Enumeration;
import net.sf.sevenzipjbinding.*;
import net.sf.sevenzipjbinding.impl.RandomAccessFileInStream;
import net.sf.sevenzipjbinding.simple.ISimpleInArchive;
import net.sf.sevenzipjbinding.simple.ISimpleInArchiveItem;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.github.junrar.Archive;
import com.github.junrar.rarfile.FileHeader;
/**
- @Description: Java解压zip、rar、7z文件
- param srcPath 目标文件路径 destPath 输入目的地路径
- @return: void
- @Author: Zhu CL
- @Date: 13:57
*/
public class FileHelper {
final static protected Logger logger= LoggerFactory.getLogger(FileHelper.class);
/**使用UTF-8编码避免压缩中文文件名乱码*/
private static final String CHINESE_CHARSET = "utf-8";
/**文件读取缓冲区大小*/
private static final int CACHE_SIZE = 1024;
/** 文件是否存在 */
public static boolean isExists(String dirName){
File file = new File(dirName);
if(file.exists() && file.isDirectory()){
return true;
}
return false;
}
/** 解压ZIP */
public static void unZip(String zipFilePath, String destDir){
File dFile=new File(destDir);
if (!dFile.exists()) {
dFile.mkdirs();
}
ZipFile zipFile = null;
try {
BufferedInputStream bis = null;
FileOutputStream fos = null;
BufferedOutputStream bos = null;
zipFile = new ZipFile(zipFilePath, CHINESE_CHARSET);
Enumeration<ZipEntry> zipEntries = zipFile.getEntries();
File file, parentFile;
ZipEntry entry;
byte[] cache = new byte[CACHE_SIZE];
while (zipEntries.hasMoreElements()) {
entry = (ZipEntry) zipEntries.nextElement();
if (entry.isDirectory()) {
new File(destDir + entry.getName()).mkdirs();
continue;
}
bis = new BufferedInputStream(zipFile.getInputStream(entry));
file = new File(destDir+File.separator+entry.getName());
parentFile = file.getParentFile();
if (parentFile != null && (!parentFile.exists())) {
parentFile.mkdirs();
}
fos = new FileOutputStream(file);
bos = new BufferedOutputStream(fos, CACHE_SIZE);
int readIndex = 0;
while ((readIndex = bis.read(cache, 0, CACHE_SIZE)) != -1) {
fos.write(cache, 0, readIndex);
}
bos.flush();
bos.close();
fos.close();
bis.close();
}
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
zipFile.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/*解压RAR/
public static void unRar(String srcRarPath, String dstDirectoryPath){
File dstDiretory = new File(dstDirectoryPath);
if (!dstDiretory.exists()) {// 目标目录不存在时，创建该文件夹
dstDiretory.mkdirs();
}
Archive a = null;
try {
a = new Archive(new File(srcRarPath));
if (a != null) {
FileHeader fh = a.nextFileHeader();
while (fh != null) {
String fileName = fh.getFileNameW().isEmpty()?fh.getFileNameString():fh.getFileNameW();
if (fh.isDirectory()) {
File fol = new File(dstDirectoryPath + File.separator
+ fileName);
fol.mkdirs();
} else {
File out = new File(dstDirectoryPath + File.separator
+ fileName.trim());
try {
if (!out.exists()) {
if (!out.getParentFile().exists()) {
out.getParentFile().mkdirs();
}
out.createNewFile();
}
FileOutputStream os = new FileOutputStream(out);
a.extractFile(fh, os);
os.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
fh = a.nextFileHeader();
}
a.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
/** 解压7Z */
public static void un7z(String filepath, String targetFilePath){
final File file = new File(targetFilePath);
if (!file.exists()) {
file.mkdirs();
}
RandomAccessFile randomAccessFile = null;
IInArchive inArchive = null;
try {
randomAccessFile = new RandomAccessFile(filepath, "r");
inArchive = SevenZip.openInArchive(null,
new RandomAccessFileInStream(randomAccessFile));
ISimpleInArchive simpleInArchive = inArchive.getSimpleInterface();
for (final ISimpleInArchiveItem item : simpleInArchive.getArchiveItems()) {
final int[] hash = new int[] { 0 };
if (!item.isFolder()) {
ExtractOperationResult result;
final long[] sizeArray = new long[1];
result = item.extractSlow(new ISequentialOutStream() {
public int write(byte[] data) throws SevenZipException {
FileOutputStream fos=null;
try {
File tarFile=new File(file+File.separator+item.getPath());
if (!tarFile.getParentFile().exists()) {
tarFile.getParentFile().mkdirs();
}
tarFile.createNewFile();
fos = new FileOutputStream(tarFile.getAbsolutePath());
fos.write(data);
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
hash[0] ^= Arrays.hashCode(data);
sizeArray[0] += data.length;
return data.length;
}
});
if (result == ExtractOperationResult.OK) {
// System.out.println(String.format("%9X | %10s | %s", //
// hash[0], sizeArray[0], item.getPath()));
} else {
// System.err.println("Error extracting item: " + result);
}
}
}
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
} finally {
if (inArchive != null) {
try {
inArchive.close();
} catch (SevenZipException e) {
e.printStackTrace();
}
}
if (randomAccessFile != null) {
try {
randomAccessFile.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public static void deCompress(String srcFilePath, String destDir){
if (srcFilePath.toLowerCase().endsWith(".zip")) {
unZip(srcFilePath, destDir);
} else if (srcFilePath.toLowerCase().endsWith(".rar")) {
unRar(srcFilePath, destDir);
}else if (srcFilePath.toLowerCase().endsWith(".7z")) {
un7z(srcFilePath, destDir);
}
}
/** 测试 */
public static void main(String[] args) {
String zipFilePath="C:\\Users\\Desktop\\code.zip"; //zip
String sevenZFilePath="C:\\Users\\Desktop\\code.7z"; //7z
String rarFilePath="C:\\Users\\Desktop\\code.rar"; //rar
String destDir="C:\\Users\\Desktop\\压缩测试";
deCompress(zipFilePath,destDir);
}
}
本文地址：https://blog.csdn.net/weixin_44005694/article/details/107682222
