如何基于java实现解压ZIP TAR等文件

　　java实现对常用.ZIP ， .TAR， .TAR.BZ2， .BZ2 ，.TAR.GZ ，.GZ格式文件的解压。

　　首先需要引入maven依赖，这里使用的是Apache的压缩工具包common-compress，改工具包支持解压、压缩，此代码中我列举出一个zip的压缩示例，其他格式的只需切换改格式对应的流即可。

对于RAR格式文件的解压，目前该工具包还不支持，希望大家做过的可以多多交流。

  org.apache.commons
  commons-compress
  1.19

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
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.bzip2.BZip2CompressorInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.apache.commons.compress.utils.IOUtils;
import java.io.*;


public class CompressionFileUtil {
  
  public static boolean zipUnCompress(String filePath, String unzipPath) throws IOException {

    System.out.println("开始解压ZIP..........");
    FileInputStream fis = null;
    ZipArchiveInputStream zis = null;
    try {
      File file = new File(filePath);
      fis = new FileInputStream(file);
      zis = new ZipArchiveInputStream(fis);
      ZipArchiveEntry nze = null;
      while ((nze = zis.getNextZipEntry()) != null) {
 FileOutputStream os = null;
 BufferedOutputStream bos = null;
 try {
   System.out.println("正在解压....." + nze.getName());
   //自动添加File.separator文件路径的分隔符，根据系统判断是\还是/
   String dir = unzipPath + File.separator + nze.getName(); //解压全路径
   System.out.println("dir---" + dir);
   File file1 = null;
   if (nze.isDirectory()) {
     file1 = new File(dir);
     file1.mkdirs();
   } else {
     file1 = new File(dir);
     os = new FileOutputStream(file1);
     bos = new BufferedOutputStream(os);
      
     IOUtils.copy(zis, bos); //作用与上面注释代码一样
   }
   System.out.println("解压完成......");
 } catch (FileNotFoundException e) {
   e.printStackTrace();
   return false;
 } finally {
   if (bos != null) {
     bos.close();
   }
   if (os != null) {
     os.close();
   }
 }
      }
    } catch (Exception e) {
      e.printStackTrace();
      return false;
    } finally {
      if (zis != null) {
 zis.close();
      }
      if (fis != null) {
 fis.close();
      }
    }
    return true;
  }

  
  public static boolean zipCompression(String[] filesPathArray, String zipFilePath) throws Exception {
    System.out.println("开始压缩ZIP文件");
    ZipArchiveOutputStream zos = null;
    FileOutputStream fos = null;
    try {
      fos = new FileOutputStream(new File(zipFilePath));
      zos = new ZipArchiveOutputStream(fos);
      for (String filePath : filesPathArray) {
 FileInputStream fis = null;
 BufferedInputStream bis = null;
 try {
   File file = new File(filePath);
   // 第二个参数如果是文件全路径名,那么压缩时也会将路径文件夹也缩进去;
   // 我们只压缩目标文件,而不压缩该文件所处位置的相关文件夹,所以这里我们用file.getName()
   System.out.println("开始压缩..." + file.getName());
   ZipArchiveEntry zae = new ZipArchiveEntry(file, file.getName());
   zos.putArchiveEntry(zae);
   fis = new FileInputStream(file);
   bis = new BufferedInputStream(fis);
   int count;
   byte[] bt = new byte[1024];
   while ((count = bis.read(bt, 0, 1024)) != -1) {
     zos.write(bt, 0, count);
   }
 } finally {
   zos.closeArchiveEntry();
   if (bis != null)
     bis.close();
   if (fis != null)
     fis.close();
 }
      }
    } finally {
      if (zos != null)
 zos.close();
      if (fos != null)
 fos.close();
    }
    System.out.println("压缩完成......");
    return true;
  }

  
  public static void unTar(InputStream inputStream, String unTarPath) throws IOException {

    FileInputStream fis = null;
    TarArchiveInputStream tis = null;
    try {
      tis = new TarArchiveInputStream(inputStream);
      TarArchiveEntry nte = null;
      System.out.println("开始解压......");
      while ((nte = tis.getNextTarEntry()) != null) {
 String dir = unTarPath + File.separator + nte.getName();
 System.out.println("正在解压......" + dir);
 FileOutputStream fos = null;
 BufferedOutputStream bos = null;
 try {
   if (nte.isDirectory()) {
     File file1 = new File(dir);
     file1.mkdirs();
   } else {
     File file2 = new File(dir);
     fos = new FileOutputStream(file2);
     bos = new BufferedOutputStream(fos);
     IOUtils.copy(tis, bos);
   }
 } catch (Exception e) {
   e.printStackTrace();
 } finally {
   if (bos != null) {
     bos.close();
   }
   if (fos != null) {
     fos.close();
   }
 }
      }
      System.out.println("解压完成......");
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      if (tis != null) {
 tis.close();
      }
      if (fis != null) {
 fis.close();
      }
    }
  }

  public static boolean unCompress(String filePath,String unCompressPath) throws Exception {
    String fileType = filePath.toUpperCase();
    if(fileType.endsWith(".TAR")){
      System.out.println("解压的.TAR包");
      //.TAR包用一般的FileInputStream流读取
      unTar(new FileInputStream(filePath),unCompressPath);
    }
    else if(fileType.endsWith(".TAR.GZ")){
      System.out.println("解压的.TAR.GZ包");
      //.TAR.GZ包要用GzipCompressorInputStream读取
      unTar(new GzipCompressorInputStream(new FileInputStream(filePath)),unCompressPath);
    }
    else if(fileType.endsWith(".TAR.BZ2")){
      System.out.println("解压的.TAR.BZ2包");
      unTar(new BZip2CompressorInputStream(new FileInputStream(filePath)),unCompressPath);
    }
    else if(fileType.endsWith(".ZIP")){
      System.out.println("解压的.ZIP包");
      zipUnCompress(filePath,unCompressPath);
    }
    else{
      System.out.println("暂不支持该种格式文件的解压");
    }
    return true;
  }

  public static void main(String[] args) throws Exception {

    unCompress("D:\test\zip\nginx-1.18.0.rar","D:\test\zip");

  }

}

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