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這篇文章主要講解了“Java怎么對(duì)zip,rar,7z文件帶密碼解壓”，文中的講解內(nèi)容簡(jiǎn)單清晰，易于學(xué)習(xí)與理解，下面請(qǐng)大家跟著小編的思路慢慢深入，一起來(lái)研究和學(xué)習(xí)“Java怎么對(duì)zip,rar,7z文件帶密碼解壓”吧！
在一些日常業(yè)務(wù)中，會(huì)遇到一些瑣碎文件需要統(tǒng)一打包到一個(gè)壓縮包中上傳，業(yè)務(wù)方在后臺(tái)接收到壓縮包后自行解壓，然后解析相應(yīng)文件。而且可能涉及安全保密，因此會(huì)在壓縮時(shí)帶上密碼，要求后臺(tái)業(yè)務(wù)可以指定密碼進(jìn)行解壓。
應(yīng)用環(huán)境說明：jdk1.8，maven3.x,需要基于java語(yǔ)言實(shí)現(xiàn)對(duì)zip、rar、7z等常見壓縮包的解壓工作。
首先關(guān)于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(gè)數(shù)據(jù)對(duì)比，使用上述三種不同的壓縮算法，采用默認(rèn)的壓縮方式，看到壓縮的文件大小如下：
轉(zhuǎn)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(diǎn)。單純從壓縮率看，7z>rar4>rar5>zip。
下面具體說明在java中如何進(jìn)行相應(yīng)解壓：
<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。
@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;
}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(gè)參數(shù)是需要解壓的壓縮包路徑，第二個(gè)參數(shù)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(cuò)誤或者其他錯(cuò)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 "";
} private static String un7z(String rootPath, String sourceRarPath, String destDirPath, String passWord) {
try {
File srcFile = new File(rootPath + sourceRarPath);//獲取當(dāng)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(chuàng)建此文件的上級(jí)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(guān)流順序，先打開的后關(guān)閉
bos.close();
out.close();
}
}
} catch (Exception e) {
log.error("un7z is error", e);
return e.getMessage();
}
return "";
}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;
}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(shí)==" + (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(shí)==" + (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(shí)==" + (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(shí)==" + (zend - zstart)+ "毫秒");
System.out.println("============================================================");在控制臺(tái)中可以看到以下結(jié)果：
總結(jié)：本文采用java語(yǔ)言實(shí)現(xiàn)了對(duì)zip和rar、7z文件的解壓統(tǒng)一算法。并對(duì)比了相應(yīng)的解壓速度，支持傳入密碼進(jìn)行在線解壓。
本文參考代碼在補(bǔ)充內(nèi)容里，不過代碼直接運(yùn)行有問題，這里進(jìn)行了調(diào)整，主要優(yōu)化的點(diǎn)如下：
1、pom.xml 遺漏了slf4j、commons-lang3、xdocreport等依賴
2、zip路徑優(yōu)化
3、去掉一些無(wú)用信息
4、優(yōu)化異常信息
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(shí)現(xiàn)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(gè)參數(shù)是需要解壓的壓縮包路徑，第二個(gè)參數(shù)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(cuò)誤或者其他錯(cuò)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(dāng)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(chuàng)建此文件的上級(jí)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(guān)流順序，先打開的后關(guān)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(cè)試.zip", "test3333", "密碼");
}
}感謝各位的閱讀，以上就是“Java怎么對(duì)zip,rar,7z文件帶密碼解壓”的內(nèi)容了，經(jīng)過本文的學(xué)習(xí)后，相信大家對(duì)Java怎么對(duì)zip,rar,7z文件帶密碼解壓這一問題有了更深刻的體會(huì)，具體使用情況還需要大家實(shí)踐驗(yàn)證。這里是億速云，小編將為大家推送更多相關(guān)知識(shí)點(diǎn)的文章，歡迎關(guān)注！
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