Java解压工具类

迈不过友情╰ 2022-05-15 03:48 300阅读 0赞

### 常用的压缩文件解压 ###

> Tar、tarBzip2、Bzip2、Gz、TarGz、Zip、Rar

#### jar包准备 ####

> commons-compress-1.17.jar  
> commons-io-2.6.jar  
> commons-lang3-3.7.jar  
> commons-logging-1.2.jar  
> java-unrar-0.3.jar

#### CompressUtils ####

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.compressors.bzip2.BZip2CompressorInputStream;
    import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
    import org.apache.commons.compress.utils.IOUtils;
    import org.apache.commons.io.FilenameUtils;
    import org.apache.commons.lang3.StringUtils;
    
    import java.io.*;
    import java.util.ArrayList;
    import java.util.List;
    
    /** * 解压工具类 */
    public class CompressUtils { 
    
        private static final int BUFFER_SIZE = 2048;
    
        private static List<String> unTar(InputStream inputStream, String destDir) throws Exception {
            List<String> fileNames = new ArrayList<String>();
            TarArchiveInputStream tarIn = new TarArchiveInputStream(inputStream, BUFFER_SIZE);
            TarArchiveEntry entry = null;
            try {
                while ((entry = tarIn.getNextTarEntry()) != null) {
                    fileNames.add(entry.getName());
                    if (entry.isDirectory()) {
       //是目录
                        createDirectory(destDir, entry.getName());//创建空目录
                    } else {
       //是文件
                        File tmpFile = new File(destDir + File.separator + entry.getName());
                        createDirectory(tmpFile.getParent() + File.separator, null);//创建输出目录
                        OutputStream out = null;
                        try {
                            out = new FileOutputStream(tmpFile);
                            int length = 0;
                            byte[] b = new byte[2048];
                            while ((length = tarIn.read(b)) != -1) {
                                out.write(b, 0, length);
                            }
                        } finally {
                            IOUtils.closeQuietly(out);
                        }
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
                throw e;
            } finally {
                IOUtils.closeQuietly(tarIn);
            }
    
            return fileNames;
        }
    
        public static List<String> unTar(String tarFile, String destDir) throws Exception {
            File file = new File(tarFile);
            return unTar(file, destDir);
        }
    
        public static List<String> unTar(File tarFile, String destDir) throws Exception {
            if (StringUtils.isBlank(destDir)) {
                destDir = tarFile.getParent();
            }
            destDir = destDir.endsWith(File.separator) ? destDir : destDir + File.separator;
            return unTar(new FileInputStream(tarFile), destDir);
        }
    
        public static List<String> unTarBZip2(File tarFile, String destDir) throws Exception {
            if (StringUtils.isBlank(destDir)) {
                destDir = tarFile.getParent();
            }
            destDir = destDir.endsWith(File.separator) ? destDir : destDir + File.separator;
            return unTar(new BZip2CompressorInputStream(new FileInputStream(tarFile)), destDir);
        }
    
        public static List<String> unTarBZip2(String file, String destDir) throws Exception {
            File tarFile = new File(file);
            return unTarBZip2(tarFile, destDir);
        }
    
        public static List<String> unBZip2(String bzip2File, String destDir) throws IOException {
            File file = new File(bzip2File);
            return unBZip2(file, destDir);
        }
    
        public static List<String> unBZip2(File srcFile, String destDir) throws IOException {
            if (StringUtils.isBlank(destDir)) {
                destDir = srcFile.getParent();
            }
            destDir = destDir.endsWith(File.separator) ? destDir : destDir + File.separator;
            List<String> fileNames = new ArrayList<String>();
            InputStream is = null;
            OutputStream os = null;
            try {
                File destFile = new File(destDir, FilenameUtils.getBaseName(srcFile.toString()));
                fileNames.add(FilenameUtils.getBaseName(srcFile.toString()));
                is = new BZip2CompressorInputStream(new BufferedInputStream(new FileInputStream(srcFile), BUFFER_SIZE));
                os = new BufferedOutputStream(new FileOutputStream(destFile), BUFFER_SIZE);
                IOUtils.copy(is, os);
            } finally {
                IOUtils.closeQuietly(os);
                IOUtils.closeQuietly(is);
            }
            return fileNames;
        }
    
        public static List<String> unGZ(String gzFile, String destDir) throws IOException {
            File file = new File(gzFile);
            return unGZ(file, destDir);
        }
    
        public static List<String> unGZ(File srcFile, String destDir) throws IOException {
            if (StringUtils.isBlank(destDir)) {
                destDir = srcFile.getParent();
            }
            destDir = destDir.endsWith(File.separator) ? destDir : destDir + File.separator;
            List<String> fileNames = new ArrayList<String>();
            InputStream is = null;
            OutputStream os = null;
            try {
                File destFile = new File(destDir, FilenameUtils.getBaseName(srcFile.toString()));
                fileNames.add(FilenameUtils.getBaseName(srcFile.toString()));
                is = new GzipCompressorInputStream(new BufferedInputStream(new FileInputStream(srcFile), BUFFER_SIZE));
                os = new BufferedOutputStream(new FileOutputStream(destFile), BUFFER_SIZE);
                IOUtils.copy(is, os);
            } finally {
                IOUtils.closeQuietly(os);
                IOUtils.closeQuietly(is);
            }
            return fileNames;
        }
    
        public static List<String> unTarGZ(File tarFile, String destDir) throws Exception {
            if (StringUtils.isBlank(destDir)) {
                destDir = tarFile.getParent();
            }
            destDir = destDir.endsWith(File.separator) ? destDir : destDir + File.separator;
            return unTar(new GzipCompressorInputStream(new FileInputStream(tarFile)), destDir);
        }
    
        public static List<String> unTarGZ(String file, String destDir) throws Exception {
            File tarFile = new File(file);
            return unTarGZ(tarFile, destDir);
        }
    
        public static void createDirectory(String outputDir, String subDir) {
            File file = new File(outputDir);
            if (!(subDir == null || subDir.trim().equals(""))) {
       //子目录不为空
                file = new File(outputDir + File.separator + subDir);
            }
            if (!file.exists()) {
                file.mkdirs();
            }
        }
    
        public static List<String> unZip(File zipfile, String destDir) throws Exception {
            if (StringUtils.isBlank(destDir)) {
                destDir = zipfile.getParent();
            }
            destDir = destDir.endsWith(File.separator) ? destDir : destDir + File.separator;
            ZipArchiveInputStream is = null;
            List<String> fileNames = new ArrayList<String>();
    
            try {
                is = new ZipArchiveInputStream(new BufferedInputStream(new FileInputStream(zipfile), BUFFER_SIZE));
                ZipArchiveEntry entry = null;
                while ((entry = is.getNextZipEntry()) != null) {
                    fileNames.add(entry.getName());
                    if (entry.isDirectory()) {
                        File directory = new File(destDir, entry.getName());
                        directory.mkdirs();
                    } else {
                        OutputStream os = null;
                        try {
                            os = new BufferedOutputStream(new FileOutputStream(new File(destDir, entry.getName())), BUFFER_SIZE);
                            IOUtils.copy(is, os);
                        } finally {
                            IOUtils.closeQuietly(os);
                        }
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
                throw e;
            } finally {
                IOUtils.closeQuietly(is);
            }
    
            return fileNames;
        }
    
        public static List<String> unZip(String zipfile, String destDir) throws Exception {
            File zipFile = new File(zipfile);
            return unZip(zipFile, destDir);
        }
    
        public static List<String> unRar(String rarfile, String destDir) throws Exception {
            List<String> fileNames = new ArrayList<String>();
            try {
                // 系统安装winrar的路径
                String cmd = "C:\\Program Files\\WinRAR\\WinRAR.exe";
                String unrarCmd = cmd + " x -r -p- -o+ " + rarfile + " " + destDir;
                Runtime rt = Runtime.getRuntime();
                Process pre = rt.exec(unrarCmd);
                InputStreamReader isr = new InputStreamReader(pre.getInputStream());
                BufferedReader bf = new BufferedReader(isr);
                String line = null;
                while ((line = bf.readLine()) != null) {
                    line = line.trim();
                    if ("".equals(line)) {
                        continue;
                    }
                    System.out.println(line);
                }
                bf.close();
                fileNames.add("成功");
            } catch (Exception e) {
                System.out.println("解压发生异常");
            }
            return fileNames;
    
        }
        /** * 解压方法 * @param compressFile 解压文件 * @param destDir 解压到的文件夹 * @return * @throws Exception */
        public static List<String> unCompress(String compressFile, String destDir) throws Exception {
            String upperName = compressFile.toUpperCase();
            List<String> ret = null;
            if (upperName.endsWith(".ZIP")) {
                ret = unZip(compressFile, destDir);
            } else if (upperName.endsWith(".TAR")) {
                ret = unTar(compressFile, destDir);
            } else if (upperName.endsWith(".TAR.BZ2")) {
                ret = unTarBZip2(compressFile, destDir);
            } else if (upperName.endsWith(".BZ2")) {
                ret = unBZip2(compressFile, destDir);
            } else if (upperName.endsWith(".TAR.GZ")) {
                ret = unTarGZ(compressFile, destDir);
            } else if (upperName.endsWith(".GZ")) {
                ret = unGZ(compressFile, destDir);
            } else {
                ret = unRar(compressFile,destDir);
            }
            return ret;
        }
    }

#### 调用unCompress方法即可测试。需要jar包请在评论留言。 ####