Java打成各种压缩包的方法详细汇总
作者:程序员阿诚
1.将指定目录下的文件打包成 .zip
代码示例:
import java.io.*;
import java.util.zip.*;
public class ZipFiles {
public static void main(String[] args) {
// 要压缩的文件或文件夹
String sourceFile = "path/to/your/source/file_or_folder";
// 压缩后的ZIP文件名
String zipFileName = "output.zip";
// 创建一个输出流将数据写入ZIP文件
try (FileOutputStream fos = new FileOutputStream(zipFileName);
ZipOutputStream zos = new ZipOutputStream(fos)) {
// 调用递归方法压缩文件或文件夹
addToZipFile(sourceFile, sourceFile, zos);
System.out.println("文件已成功打包成 " + zipFileName);
} catch (IOException e) {
e.printStackTrace();
}
}
private static void addToZipFile(String path, String sourceFile, ZipOutputStream zos) throws IOException {
File file = new File(sourceFile);
// 如果是文件夹,则获取其内容并递归调用此方法
if (file.isDirectory()) {
String[] fileList = file.list();
if (fileList != null) {
for (String fileName : fileList) {
addToZipFile(path, sourceFile + File.separator + fileName, zos);
}
}
return;
}
// 如果是文件,则将其添加到ZIP文件中
try (FileInputStream fis = new FileInputStream(sourceFile)) {
String entryName = sourceFile.substring(path.length() + 1); // 获取ZIP中的条目名称
ZipEntry zipEntry = new ZipEntry(entryName);
zos.putNextEntry(zipEntry);
byte[] bytes = new byte[1024];
int length;
while ((length = fis.read(bytes)) >= 0) {
zos.write(bytes, 0, length);
}
}
}
}
将 path/to/your/source/file_or_folder 替换为要打包的文件或文件夹的路径,然后运行该代码。它将创建一个名为 output.zip 的ZIP文件,其中包含指定路径下的文件或文件夹。
2.将指定目录下的文件打包成 .tar.gz
可以使用 Java 中的 java.util.zip 包来创建 .tar.gz 文件。尽管 Java 的标准库没有直接提供对 .tar 格式的支持,但你可以使用 TarArchiveOutputStream 以及 GzipCompressorOutputStream 来创建 tar.gz 归档文件。以下是一个示例:
import org.apache.commons.compress.archivers.tar.*;
import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
import java.io.*;
public class TarGzFiles {
public static void main(String[] args) {
// 要压缩的文件或文件夹
String sourceFile = "path/to/your/source/file_or_folder";
// 压缩后的tar.gz文件名
String tarGzFileName = "output.tar.gz";
try {
FileOutputStream fos = new FileOutputStream(tarGzFileName);
BufferedOutputStream bos = new BufferedOutputStream(fos);
GzipCompressorOutputStream gzos = new GzipCompressorOutputStream(bos);
TarArchiveOutputStream tarArchive = new TarArchiveOutputStream(gzos);
File file = new File(sourceFile);
addToTarArchive(file, tarArchive);
tarArchive.finish();
tarArchive.close();
System.out.println("文件已成功打包成 " + tarGzFileName);
} catch (IOException e) {
e.printStackTrace();
}
}
private static void addToTarArchive(File file, TarArchiveOutputStream tarArchive) throws IOException {
String entryName = file.getName();
TarArchiveEntry tarEntry = new TarArchiveEntry(file, entryName);
tarArchive.putArchiveEntry(tarEntry);
if (file.isFile()) {
try (FileInputStream fis = new FileInputStream(file)) {
byte[] buffer = new byte[1024];
int len;
while ((len = fis.read(buffer)) != -1) {
tarArchive.write(buffer, 0, len);
}
tarArchive.closeArchiveEntry();
}
} else if (file.isDirectory()) {
tarArchive.closeArchiveEntry();
File[] children = file.listFiles();
if (children != null) {
for (File child : children) {
addToTarArchive(child, tarArchive);
}
}
}
}
}
在此示例中,使用了 Apache Commons Compress 库,你可以在 Maven =添加以下依赖:
Maven:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.21</version> <!-- 或者更高的版本 -->
</dependency>
确保将 path/to/your/source/file_or_folder 替换为要打包的文件或文件夹的实际路径,然后运行代码以创建 output.tar.gz 文件。
3.将指定目录下的文件打包成 .tar
Java的标准库中并没有直接支持创建.tar格式文件的类,但你可以使用Apache Commons Compress库来完成这个任务。下面是一个示例代码:
首先,确保你在项目中包含了Apache Commons Compress库。如果使用Maven,可以在pom.xml文件中添加以下依赖项:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-compress</artifactId>
<version>1.21</version> <!-- 或者更高的版本 -->
</dependency>
然后,使用以下代码将文件打包成.tar文件:
import org.apache.commons.compress.archivers.tar.*;
import org.apache.commons.compress.utils.IOUtils;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
public class TarFiles {
public static void main(String[] args) {
// 要打包的文件或文件夹
String sourceFile = "path/to/your/source/file_or_folder";
// 打包后的tar文件名
String tarFileName = "output.tar";
try {
FileOutputStream fos = new FileOutputStream(tarFileName);
BufferedOutputStream bos = new BufferedOutputStream(fos);
TarArchiveOutputStream tarArchive = new TarArchiveOutputStream(bos);
addToTarArchive(sourceFile, tarArchive);
tarArchive.finish();
tarArchive.close();
System.out.println("文件已成功打包成 " + tarFileName);
} catch (IOException e) {
e.printStackTrace();
}
}
private static void addToTarArchive(String filePath, TarArchiveOutputStream tarArchive) throws IOException {
Path sourcePath = Paths.get(filePath);
String baseDir = sourcePath.getFileName().toString();
Files.walk(sourcePath)
.filter(path -> !Files.isDirectory(path))
.forEach(path -> {
try {
String entryName = baseDir + File.separator + sourcePath.relativize(path).toString();
TarArchiveEntry tarEntry = new TarArchiveEntry(path.toFile(), entryName);
tarArchive.putArchiveEntry(tarEntry);
FileInputStream fis = new FileInputStream(path.toFile());
IOUtils.copy(fis, tarArchive);
fis.close();
tarArchive.closeArchiveEntry();
} catch (IOException e) {
e.printStackTrace();
}
});
}
}
在这个示例中,我们使用了Apache Commons Compress库来创建.tar文件。确保将path/to/your/source/file_or_folder替换为你要打包的实际文件或文件夹的路径,并运行代码来创建output.tar文件。
4.将指定目录下的文件打包成 .rar
在Java中,压缩成RAR格式的操作稍微有些复杂,因为RAR格式是一种专有格式,并没有Java标准库提供直接支持。为了压缩文件为RAR格式,你可以使用第三方库,比如通过调用WinRAR或其他命令行工具来实现。
一种方法是使用Java的ProcessBuilder来运行命令行来执行WinRAR或其他RAR压缩工具的命令。以下是一个简单的示例,假设你已经安装了WinRAR并将其路径添加到了系统的环境变量中:
import java.io.*;
public class RARFiles {
public static void main(String[] args) {
// 要压缩的文件或文件夹
String sourceFile = "path/to/your/source/file_or_folder";
// 压缩后的RAR文件名
String rarFileName = "output.rar";
try {
// 构建命令行
String[] command = {"cmd", "/c", "rar", "a", "-r", rarFileName, sourceFile};
// 创建进程并执行命令
ProcessBuilder processBuilder = new ProcessBuilder(command);
Process process = processBuilder.start();
// 读取进程输出(可选)
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
// 等待进程执行结束
int exitCode = process.waitFor();
if (exitCode == 0) {
System.out.println("文件已成功打包成 " + rarFileName);
} else {
System.out.println("打包过程中出现错误");
}
} catch (IOException | InterruptedException e) {
e.printStackTrace();
}
}
}
请替换 path/to/your/source/file_or_folder 为你要压缩的文件或文件夹的路径,并确保系统中已经正确安装和配置了WinRAR。
记住,这种方法需要系统中安装有WinRAR并且路径被正确添加到系统的环境变量中,且这个示例中的代码并没有对WinRAR命令返回的错误进行详细处理。
5.生成若干个txt并打包到zip中
代码示例:
import java.io.*;
import java.util.zip.*;
public class GenerateTxtFilesAndZip {
public static void main(String[] args) {
String basePath = "path/to/your/directory"; // 更换为你想要保存文件的文件夹路径
int fileCount = 10; // 要生成的文件数量
try {
// 创建文件夹(如果不存在)
File directory = new File(basePath);
if (!directory.exists()) {
directory.mkdirs();
}
// 生成txt文件并写入内容
for (int i = 1; i <= fileCount; i++) {
String fileName = "file" + i + ".txt";
String filePath = basePath + File.separator + fileName;
String fileContent = "This is the content of " + fileName;
try (BufferedWriter writer = new BufferedWriter(new FileWriter(filePath))) {
writer.write(fileContent);
} catch (IOException e) {
e.printStackTrace();
}
}
// 打包成zip文件
String zipFileName = "output.zip";
byte[] buffer = new byte[1024];
FileOutputStream fos = new FileOutputStream(zipFileName);
ZipOutputStream zos = new ZipOutputStream(fos);
File dir = new File(basePath);
File[] files = dir.listFiles();
if (files != null) {
for (File file : files) {
if (file.getName().endsWith(".txt")) {
FileInputStream fis = new FileInputStream(file);
zos.putNextEntry(new ZipEntry(file.getName()));
int length;
while ((length = fis.read(buffer)) > 0) {
zos.write(buffer, 0, length);
}
zos.closeEntry();
fis.close();
}
}
}
zos.close();
System.out.println("文件已成功打包成 " + zipFileName);
} catch (IOException e) {
e.printStackTrace();
}
}
}
请替换path/to/your/directory为你想要保存生成文件的实际文件夹路径。这段代码会在指定路径下生成10个.txt文件,并将它们打包成一个名为output.zip的ZIP文件。
附:Java实现zip、tar、tar.gz 打包压缩解压
package com.bj.drj;
import cn.hutool.core.lang.Console;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
import org.apache.commons.io.IOUtils;
import java.io.*;
/**
* @ClassName PackAndCompressionUtils
* @Description: 解压压缩文件
* @Author drj
* @Date 2021/9/18
* @Version V1.0
**/
public class PackAndCompressionUtils {
private PackAndCompressionUtils() {
}
/**
* 这个方法主要针对文件实现打包tar 也可以生成tar.gz 但是失去了gz 压缩功能 只是现实了打包。
*
* @param filesPathArray 需要打包的文件
* @param targetDirPath 生成tar 目录
* @return
* @throws Exception
*/
public static boolean tarPack(String[] filesPathArray, String targetDirPath) throws Exception {
try (FileOutputStream fileOutputStream = new FileOutputStream(new File(targetDirPath));
BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream);
TarArchiveOutputStream tarArchiveOutputStream = new TarArchiveOutputStream(bufferedOutputStream)) {
for (String filePath : filesPathArray) {
try (FileInputStream fileInputStream = new FileInputStream(new File(filePath))) {
File file = new File(filePath);
TarArchiveEntry tae = new TarArchiveEntry(file, file.getName());
tarArchiveOutputStream.putArchiveEntry(tae);
IOUtils.copy(fileInputStream, tarArchiveOutputStream);
tarArchiveOutputStream.closeArchiveEntry();
} catch (Exception e) {
Console.error(e, "异常信息:{}", filePath);
}
}
} catch (Exception e) {
Console.error(e, "异常信息:{}", filesPathArray);
}
return true;
}
/**
* 解压打包文件
*
* @param unPackFilePath
* @param targetDirPath
* @return
* @throws Exception
*/
public static boolean tarUnpack(String unPackFilePath, String targetDirPath) throws Exception {
try (FileInputStream fileInputStream = new FileInputStream(new File(unPackFilePath));
TarArchiveInputStream tarArchiveInputStream = new TarArchiveInputStream(fileInputStream)) {
TarArchiveEntry tae = null;
while ((tae = tarArchiveInputStream.getNextTarEntry()) != null) {
String dir = targetDirPath + File.separator + tae.getName();
try (FileOutputStream fileOutputStream = new FileOutputStream(new File(dir));
BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream)) {
IOUtils.copy(tarArchiveInputStream, bufferedOutputStream);
} catch (Exception ex) {
Console.error(ex, "异常文件:{}", dir);
}
}
} catch (Exception ex) {
Console.error(ex, "异常文件:{}", unPackFilePath);
}
return true;
}
/**
* gzip压缩文件 后缀是.gz
*
* @param filesPathArray
* @param targetDirPath
* @return
* @throws IOException
*/
public static boolean gzipCompress(String[] filesPathArray, String targetDirPath) throws IOException {
try (OutputStream outputStream = new FileOutputStream(new File(targetDirPath));
GzipCompressorOutputStream gzipCompressorOutputStream = new GzipCompressorOutputStream(outputStream)) {
for (String filePath : filesPathArray) {
try (InputStream inputStream = new FileInputStream(new File(filePath));) {
TarArchiveOutputStream tarArchiveOutputStream = new TarArchiveOutputStream(gzipCompressorOutputStream);
File file = new File(filePath);
TarArchiveEntry archiveEntry = new TarArchiveEntry(file, file.getName());
tarArchiveOutputStream.putArchiveEntry(archiveEntry);
IOUtils.copy(inputStream, tarArchiveOutputStream);
tarArchiveOutputStream.closeArchiveEntry();
} catch (Exception ex) {
Console.error(ex, "异常文件:{}", filePath);
}
}
} catch (Exception ex) {
Console.error(ex, "异常文件:{}", filesPathArray);
}
return true;
}
/**
* 针对gz包 进行解压
*
* @param sourceDir
* @param targetDirPath
*/
public static boolean gzipDeCompress(String sourceDir, String targetDirPath) {
try (
FileInputStream fileInputStream = new FileInputStream(sourceDir);
GzipCompressorInputStream gzipCompressorInputStream = new GzipCompressorInputStream(fileInputStream);
TarArchiveInputStream tarArchiveInputStream = new TarArchiveInputStream(gzipCompressorInputStream);
) {
TarArchiveEntry tarArchiveEntry = null;
while ((tarArchiveEntry = tarArchiveInputStream.getNextTarEntry()) != null) {
String dir = targetDirPath + File.separator + tarArchiveEntry.getName();
try (FileOutputStream fileOutputStream = new FileOutputStream(new File(dir))) {
IOUtils.copy(tarArchiveInputStream, fileOutputStream);
} catch (Exception ex) {
Console.error(ex, "异常文件路径:{}", sourceDir);
}
}
} catch (Exception ex) {
Console.error(ex, "异常文件路径:{}", sourceDir);
}
return true;
}
/**
* 对文件进行zip打包处理
*
* @param filesPathArray
* @param targetDirPath
* @return
* @throws Exception
*/
public static boolean zipCompress(String[] filesPathArray, String targetDirPath) throws Exception {
try (FileOutputStream fileOutputStream = new FileOutputStream(new File(targetDirPath));
ZipArchiveOutputStream zipArchiveOutputStream = new ZipArchiveOutputStream(fileOutputStream)) {
for (String filePath : filesPathArray) {
try (FileInputStream fileInputStream = new FileInputStream(new File(filePath))) {
File file = new File(filePath);
ZipArchiveEntry zae = new ZipArchiveEntry(file, file.getName());
zipArchiveOutputStream.putArchiveEntry(zae);
IOUtils.copy(fileInputStream, zipArchiveOutputStream);
zipArchiveOutputStream.closeArchiveEntry();
} catch (Exception ex) {
Console.error(ex, "异常文件路径:{}", filePath);
}
}
} catch (Exception ex) {
Console.error(ex, "异常文件路径:{}", filesPathArray);
}
return true;
}
/**
* 解压zip 文件
*
* @param decompressFilePath
* @param targetDirPath
* @return
* @throws Exception
*/
public static boolean zipDecompress(String decompressFilePath, String targetDirPath) throws Exception {
try (FileInputStream fileInputStream = new FileInputStream(new File(decompressFilePath));
ZipArchiveInputStream zipArchiveInputStream = new ZipArchiveInputStream(fileInputStream)) {
ZipArchiveEntry zae = null;
while ((zae = zipArchiveInputStream.getNextZipEntry()) != null) {
String dir = targetDirPath + File.separator + zae.getName();
try (FileOutputStream fileOutputStream = new FileOutputStream(new File(dir))) {
IOUtils.copy(zipArchiveInputStream, fileOutputStream);
} catch (Exception ex) {
Console.error(ex, "异常文件路径:{}", dir);
}
}
} catch (Exception ex) {
Console.error(ex, "异常文件路径:{}", decompressFilePath);
}
return true;
}
}单元测试
String[] filesPathArray = new String[]{"D:\\core\\a.txt", "D:\\core\\b.txt"};
String[] fileTarPath = new String[]{"D:\\core\\tarcompress.tar"};
String compressTarTargetDirPath = "D:\\core\\tarcompress.tar.gz";
String compressZipTargetDirPath = "D:\\core\\tarcompress.zip";
String compressGzTargetDirPath = "D:\\core\\tarcompress3.gz";
String compressGzTargetDirPath4 = "D:\\core\\tarcompress4.gz";
String deCompressDirPath = "D:\\core";
@Test
public void testTarPack() throws Exception {
boolean b = PackAndCompressionUtils.tarPack(filesPathArray, compressTarTargetDirPath);
Assert.assertTrue(b);
}
@Test
public void testTarUnpack() throws Exception {
boolean b = PackAndCompressionUtils.tarUnpack(compressGzTargetDirPath, deCompressDirPath);
Assert.assertTrue(b);
}
@Test
public void testZipCompress() throws Exception {
boolean b = PackAndCompressionUtils.zipCompress(filesPathArray, compressZipTargetDirPath);
Assert.assertTrue(b);
}
@Test
public void testZipDeCompress() throws Exception {
boolean b = PackAndCompressionUtils.zipDecompress(compressZipTargetDirPath, deCompressDirPath);
Assert.assertTrue(b);
}
@Test
public void test() throws Exception {
MyUnTarGzUtil.unTarGz(compressGzTargetDirPath,deCompressDirPath);
}
@Test
public void testGzCompress() throws Exception {
boolean b = PackAndCompressionUtils.gzipCompress(filesPathArray, compressGzTargetDirPath4);
Assert.assertTrue(b);
}
@Test
public void testGzDeCompress() throws Exception {
boolean b = PackAndCompressionUtils.gzipDeCompress(compressTarTargetDirPath, deCompressDirPath);
Assert.assertTrue(b);
}
总结
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