Java對zip,rar,7z文件帶密碼解壓實例詳解
前言
在一些日常業務中，會遇到一些瑣碎文件需要統一打包到一個壓縮包中上傳，業務方在後臺接收到壓縮包後自行解壓，然後解析相應文件。而且可能涉及安全保密，因此會在壓縮時帶上密碼，要求後臺業務可以指定密碼進行解壓。
應用環境說明：jdk1.8，maven3.x,需要基於java語言實現對zip、rar、7z等常見壓縮包的解壓工作。
首先關於zip和rar、7z等壓縮工具和壓縮算法就不在此贅述，下面通過一個數據對比，使用上述三種不同的壓縮算法，采用默認的壓縮方式，看到壓縮的文件大小如下：
轉換成圖表看得更直觀，如下圖：
從以上圖表可以看到，7z的壓縮率是最高，而zip壓縮率比較低，rar比zip稍微好點。單純從壓縮率看，7z>rar4>rar5>zip。
實現代碼
下面具體說明在java中如何進行相應解壓：
1、pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.yelang</groupId>
<artifactId>7zdemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>net.lingala.zip4j</groupId>
<artifactId>zip4j</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>net.sf.sevenzipjbinding</groupId>
<artifactId>sevenzipjbinding</artifactId>
<version>16.02-2.01</version>
</dependency>
<dependency>
<groupId>net.sf.sevenzipjbinding</groupId>
<artifactId>sevenzipjbinding-all-platforms</artifactId>
<version>16.02-2.01</version>
</dependency>
<dependency>
<groupId>org.tukaani</groupId>
<artifactId>xz</artifactId>
<version>1.9</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.21</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.30</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/fr.opensagres.xdocreport/xdocreport -->
<dependency>
<groupId>fr.opensagres.xdocreport</groupId>
<artifactId>xdocreport</artifactId>
<version>1.0.6</version>
</dependency>
</dependencies>
</project>
主要依賴的jar包有：zip4j、sevenzipjbinding等。
2、zip解壓
@SuppressWarnings("resource")
private static String unZip(String rootPath, String sourceRarPath, String destDirPath, String passWord) {
ZipFile zipFile = null;
String result = "";
try {
//String filePath = sourceRarPath;
String filePath = rootPath + sourceRarPath;
if (StringUtils.isNotBlank(passWord)) {
zipFile = new ZipFile(filePath, passWord.toCharArray());
} else {
zipFile = new ZipFile(filePath);
}
zipFile.setCharset(Charset.forName("GBK"));
zipFile.extractAll(rootPath + destDirPath);
} catch (Exception e) {
log.error("unZip error", e);
return e.getMessage();
}
return result;
}
3、rar解壓
private static String unRar(String rootPath, String sourceRarPath, String destDirPath, String passWord) {
String rarDir = rootPath + sourceRarPath;
String outDir = rootPath + destDirPath + File.separator;
RandomAccessFile randomAccessFile = null;
IInArchive inArchive = null;
try {
// 第一個參數是需要解壓的壓縮包路徑，第二個參數參考JdkAPI文檔的RandomAccessFile
randomAccessFile = new RandomAccessFile(rarDir, "r");
if (StringUtils.isNotBlank(passWord))
inArchive = SevenZip.openInArchive(null, new RandomAccessFileInStream(randomAccessFile), passWord);
else
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];
File outFile = new File(outDir + item.getPath());
File parent = outFile.getParentFile();
if ((!parent.exists()) && (!parent.mkdirs())) {
continue;
}
if (StringUtils.isNotBlank(passWord)) {
result = item.extractSlow(data -> {
try {
IOUtils.write(data, new FileOutputStream(outFile, true));
} catch (Exception e) {
e.printStackTrace();
}
hash[0] ^= Arrays.hashCode(data); // Consume data
sizeArray[0] += data.length;
return data.length; // Return amount of consumed
}, passWord);
} else {
result = item.extractSlow(data -> {
try {
IOUtils.write(data, new FileOutputStream(outFile, true));
} catch (Exception e) {
e.printStackTrace();
}
hash[0] ^= Arrays.hashCode(data); // Consume data
sizeArray[0] += data.length;
return data.length; // Return amount of consumed
});
}
if (result == ExtractOperationResult.OK) {
log.error("解壓rar成功...." + String.format("%9X | %10s | %s", hash[0], sizeArray[0], item.getPath()));
} else if (StringUtils.isNotBlank(passWord)) {
log.error("解壓rar成功：密碼錯誤或者其他錯誤...." + result);
return "password";
} else {
return "rar error";
}
}
}
} catch (Exception e) {
log.error("unRar error", e);
return e.getMessage();
} finally {
try {
inArchive.close();
randomAccessFile.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return "";
}
4、7z解壓
private static String un7z(String rootPath, String sourceRarPath, String destDirPath, String passWord) {
try {
File srcFile = new File(rootPath + sourceRarPath);//獲取當前壓縮文件
// 判斷源文件是否存在
if (!srcFile.exists()) {
throw new Exception(srcFile.getPath() + "所指文件不存在");
}
//開始解壓
SevenZFile zIn = null;
if (StringUtils.isNotBlank(passWord)) {
zIn = new SevenZFile(srcFile, passWord.toCharArray());
} else {
zIn = new SevenZFile(srcFile);
}
SevenZArchiveEntry entry = null;
File file = null;
while ((entry = zIn.getNextEntry()) != null) {
if (!entry.isDirectory()) {
file = new File(rootPath + destDirPath, entry.getName());
if (!file.exists()) {
new File(file.getParent()).mkdirs();//創建此文件的上級目錄
}
OutputStream out = new FileOutputStream(file);
BufferedOutputStream bos = new BufferedOutputStream(out);
int len = -1;
byte[] buf = new byte[1024];
while ((len = zIn.read(buf)) != -1) {
bos.write(buf, 0, len);
}
// 關流順序，先打開的後關閉
bos.close();
out.close();
}
}
} catch (Exception e) {
log.error("un7z is error", e);
return e.getMessage();
}
return "";
}
5、解壓統一入口封裝
public static Map<String,Object> unFile(String rootPath, String sourcePath, String destDirPath, String passWord) {
Map<String,Object> resultMap = new HashMap<String, Object>();
String result = "";
if (sourcePath.toLowerCase().endsWith(".zip")) {
//Wrong password!
result = unZip(rootPath, sourcePath, destDirPath, passWord);
} else if (sourcePath.toLowerCase().endsWith(".rar")) {
//java.security.InvalidAlgorithmParameterException: password should be specified
result = unRar(rootPath, sourcePath, destDirPath, passWord);
System.out.println(result);
} else if (sourcePath.toLowerCase().endsWith(".7z")) {
//PasswordRequiredException: Cannot read encrypted content from G:\ziptest\11111111.7z without a password
result = un7z(rootPath, sourcePath, destDirPath, passWord);
}
resultMap.put("resultMsg", 1);
if (StringUtils.isNotBlank(result)) {
if (result.contains("password")) resultMap.put("resultMsg", 2);
if (!result.contains("password")) resultMap.put("resultMsg", 3);
}
resultMap.put("files", null);
//System.out.println(result + "==============");
return resultMap;
}
6、測試代碼
Long start = System.currentTimeMillis();
unFile("D:/rarfetch0628/","apache-tomcat-8.5.69.zip","apache-tomcat-zip","222");
long end = System.currentTimeMillis();
System.out.println("zip解壓耗時==" + (end - start) + "毫秒");
System.out.println("============================================================");
Long rar4start = System.currentTimeMillis();
unFile("D:/rarfetch0628/","apache-tomcat-8.5.69-4.rar","apache-tomcat-rar4","222");
long rar4end = System.currentTimeMillis();
System.out.println("rar4解壓耗時==" + (rar4end - rar4start)+ "毫秒");
System.out.println("============================================================");
Long rar5start = System.currentTimeMillis();
unFile("D:/rarfetch0628/","apache-tomcat-8.5.69-5.rar","apache-tomcat-rar5","222");
long rar5end = System.currentTimeMillis();
System.out.println("rar5解壓耗時==" + (rar5end - rar5start)+ "毫秒");
System.out.println("============================================================");
Long zstart = System.currentTimeMillis();
unFile("D:/rarfetch0628/","apache-tomcat-8.5.69.7z","apache-tomcat-7z","222");
long zend = System.currentTimeMillis();
System.out.println("7z解壓耗時==" + (zend - zstart)+ "毫秒");
System.out.println("============================================================");
在控制臺中可以看到以下結果：
總結：本文采用java語言實現瞭對zip和rar、7z文件的解壓統一算法。並對比瞭相應的解壓速度，支持傳入密碼進行在線解壓。
本文參考代碼在補充內容裡，不過代碼直接運行有問題，這裡進行瞭調整，主要優化的點如下：
1、pom.xml 遺漏瞭slf4j、commons-lang3、xdocreport等依賴
2、zip路徑優化
3、去掉一些無用信息
4、優化異常信息
補充
1.maven引用
<dependency>
<groupId>net.lingala.zip4j</groupId>
<artifactId>zip4j</artifactId>
<version>2.9.0</version>
</dependency>
<dependency>
<groupId>net.sf.sevenzipjbinding</groupId>
<artifactId>sevenzipjbinding</artifactId>
<version>16.02-2.01</version>
</dependency>
<dependency>
<groupId>net.sf.sevenzipjbinding</groupId>
<artifactId>sevenzipjbinding-all-platforms</artifactId>
<version>16.02-2.01</version>
</dependency>
<dependency>
<groupId>org.tukaani</groupId>
<artifactId>xz</artifactId>
<version>1.9</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.21</version>
</dependency>
2.實現代碼如下
import fr.opensagres.xdocreport.core.io.IOUtils;
import net.lingala.zip4j.ZipFile;
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.commons.compress.archivers.sevenz.SevenZArchiveEntry;
import org.apache.commons.compress.archivers.sevenz.SevenZFile;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.util.*;
public class ZipAndRarTools {
private static final Logger log = LoggerFactory.getLogger(ZipAndRarTools.class);
/*
解壓zip
*/
private static String unZip(String rootPath, String sourceRarPath, String destDirPath, String passWord) {
ZipFile zipFile = null;
try {
if (StringUtils.isNotBlank(passWord)) {
zipFile = new ZipFile(filePath, passWord.toCharArray());
} else {
zipFile = new ZipFile(filePath);
}
zipFile.extractAll(rootPath + destDirPath);
} catch (Exception e) {
log.error("unZip error", e);
return e.getMessage();
}
return "";
}
/*
解壓rar rar5
*/
private static String unRar(String rootPath, String sourceRarPath, String destDirPath, String passWord) {
/*final File rar = new File(rootPath + sourceRarPath);
final File destinationFolder = new File(rootPath + destDirPath);
destinationFolder.mkdir();
try {
Junrar.extract(rar, destinationFolder);
} catch (Exception e) {
log.error("unRar error", e);
return e.getMessage();
}*/
String rarDir = rootPath + sourceRarPath;
String outDir = rootPath + destDirPath + File.separator;
RandomAccessFile randomAccessFile = null;
IInArchive inArchive = null;
try {
// 第一個參數是需要解壓的壓縮包路徑，第二個參數參考JdkAPI文檔的RandomAccessFile
randomAccessFile = new RandomAccessFile(rarDir, "r");
if (StringUtils.isNotBlank(passWord))
inArchive = SevenZip.openInArchive(null, new RandomAccessFileInStream(randomAccessFile), passWord);
else
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];
File outFile = new File(outDir + item.getPath());
File parent = outFile.getParentFile();
if ((!parent.exists()) && (!parent.mkdirs())) {
continue;
}
if (StringUtils.isNotBlank(passWord)) {
result = item.extractSlow(data -> {
try {
IOUtils.write(data, new FileOutputStream(outFile, true));
} catch (Exception e) {
e.printStackTrace();
}
hash[0] ^= Arrays.hashCode(data); // Consume data
sizeArray[0] += data.length;
return data.length; // Return amount of consumed
}, passWord);
} else {
result = item.extractSlow(data -> {
try {
IOUtils.write(data, new FileOutputStream(outFile, true));
} catch (Exception e) {
e.printStackTrace();
}
hash[0] ^= Arrays.hashCode(data); // Consume data
sizeArray[0] += data.length;
return data.length; // Return amount of consumed
});
}
if (result == ExtractOperationResult.OK) {
log.error("解壓rar成功...." + String.format("%9X | %10s | %s", hash[0], sizeArray[0], item.getPath()));
} else if (StringUtils.isNotBlank(passWord)) {
log.error("解壓rar成功：密碼錯誤或者其他錯誤...." + result);
return "password";
} else {
return "rar error";
}
}
}
} catch (Exception e) {
log.error("unRar error", e);
return e.getMessage();
} finally {
try {
inArchive.close();
randomAccessFile.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return "";
}
/*
* 解壓7z
*/
private static String un7z(String rootPath, String sourceRarPath, String destDirPath, String passWord) {
try {
File srcFile = new File(rootPath + sourceRarPath);//獲取當前壓縮文件
// 判斷源文件是否存在
if (!srcFile.exists()) {
throw new Exception(srcFile.getPath() + "所指文件不存在");
}
//開始解壓
SevenZFile zIn = null;
if (StringUtils.isNotBlank(passWord))
new SevenZFile(srcFile, passWord.getBytes());
else
new SevenZFile(srcFile);
SevenZArchiveEntry entry = null;
File file = null;
while ((entry = zIn.getNextEntry()) != null) {
if (!entry.isDirectory()) {
file = new File(rootPath + destDirPath, entry.getName());
if (!file.exists()) {
new File(file.getParent()).mkdirs();//創建此文件的上級目錄
}
OutputStream out = new FileOutputStream(file);
BufferedOutputStream bos = new BufferedOutputStream(out);
int len = -1;
byte[] buf = new byte[1024];
while ((len = zIn.read(buf)) != -1) {
bos.write(buf, 0, len);
}
// 關流順序，先打開的後關閉
bos.close();
out.close();
}
}
} catch (Exception e) {
log.error("un7z is error", e);
return e.getMessage();
}
return "";
}
public static void unFile(String rootPath, String sourcePath, String destDirPath, String passWord) {
String result = "";
if (sourcePath.toLowerCase().endsWith(".zip")) {
//Wrong password!
result = unZip(rootPath, sourcePath, destDirPath, passWord);
} else if (sourcePath.toLowerCase().endsWith(".rar")) {
//java.security.InvalidAlgorithmParameterException: password should be specified
result = unRar(rootPath, sourcePath, destDirPath, passWord);
} else if (sourcePath.toLowerCase().endsWith(".7z")) {
//PasswordRequiredException: Cannot read encrypted content from G:\ziptest\11111111.7z without a password
result = un7z(rootPath, sourcePath, destDirPath, passWord);
}
resultMap.put("resultMsg", 1);
if (StringUtils.isNotBlank(result)) {
if (result.contains("password")) resultMap.put("resultMsg", 2);
if (!result.contains("password")) resultMap.put("resultMsg", 3);
}
resultMap.put("files", data);
// System.out.println(result + "==============");
return resultMap;
}
public static void main(String[] args) {
getFileList("G:\\ziptest\\", "測試.zip", "test3333", "密碼");
}
}
以上就是Java對zip,rar,7z文件帶密碼解壓實例詳解的詳細內容，更多關於Java文件帶密碼解壓的資料請關註WalkonNet其它相關文章！
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