JAvaファイル圧縮解凍暗号解読のzip 4 j
3997 ワード
依存ライブラリアドレス:https://mvnrepository.com/artifact/net.lingala.zip4j/zip4j
android studio依存:
android studio依存:
implementation group: 'net.lingala.zip4j', name: 'zip4j', version: '1.3.2'
package com.xtm.test.picdemo.util;
import net.lingala.zip4j.core.ZipFile;
import net.lingala.zip4j.exception.ZipException;
import net.lingala.zip4j.model.ZipParameters;
import net.lingala.zip4j.util.Zip4jConstants;
import java.io.File;
public class ZipUtil {
public static void main(String[] args) {
try {
long startTime = System.currentTimeMillis();
zip("D:\\ .jpg", "D:\\ .zip", "123");
// unZip("D:\\ .zip", "D:\\ .jpg", "123");
System.out.print("total time:" + (System.currentTimeMillis()-startTime));
} catch (ZipException e) {
e.printStackTrace();
}
}
/**
*
*
* @param srcFile
* @param dest
* @param passwd
* @throws ZipException
*/
public static void zip(String srcFile, String dest, String passwd) throws ZipException {
File srcfile = new File(srcFile);
//
String destname = buildDestFileName(srcfile, dest);
ZipParameters par = new ZipParameters();
par.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);
par.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);
if (passwd != null) {
par.setEncryptFiles(true);
par.setEncryptionMethod(Zip4jConstants.ENC_METHOD_STANDARD);
par.setPassword(passwd.toCharArray());
}
ZipFile zipfile = new ZipFile(destname);
if (srcfile.isDirectory()) {
zipfile.addFolder(srcfile, par);
} else {
zipfile.addFile(srcfile, par);
}
}
/**
*
*
* @param zipfile
* @param dest
* @param passwd
* @throws ZipException
*/
public static void unZip(String zipfile, String dest, String passwd) throws ZipException {
ZipFile zfile = new ZipFile(zipfile);
zfile.setFileNameCharset("UTF-8");// GBK
if (!zfile.isValidZipFile()) {
throw new ZipException(" , !");
}
File file = new File(dest);
if (file.isDirectory() && !file.exists()) {
file.mkdirs();
}
if (zfile.isEncrypted()) {
zfile.setPassword(passwd.toCharArray());
}
zfile.extractAll(dest);
}
public static String buildDestFileName(File srcfile, String dest) {
if (dest == null) {
if (srcfile.isDirectory()) {
dest = srcfile.getParent() + File.separator + srcfile.getName() + ".zip";
} else {
String filename = srcfile.getName().substring(0, srcfile.getName().lastIndexOf("."));
dest = srcfile.getParent() + File.separator + filename + ".zip";
}
} else {
createPath(dest);//
if (dest.endsWith(File.separator)) {
String filename = "";
if (srcfile.isDirectory()) {
filename = srcfile.getName();
} else {
filename = srcfile.getName().substring(0, srcfile.getName().lastIndexOf("."));
}
dest += filename + ".zip";
}
}
return dest;
}
private static void createPath(String dest) {
File destDir = null;
if (dest.endsWith(File.separator)) {
destDir = new File(dest);//
} else {
destDir = new File(dest.substring(0, dest.lastIndexOf(File.separator)));
}
if (!destDir.exists()) {
destDir.mkdirs();
}
}
}