解压.zip,.tar.gz文件到指定目录，重命名文件

1.解压文件到指定目录

/**
     * 解压文件到指定目录
     * zipFile:要解压的文件
     * descDir：解压到哪个文件
     *
     */
    @SuppressWarnings("rawtypes")
    public static void unZipFiles(File zipFile,String descDir)throws IOException
    {
      File pathFile = new File(descDir);
      if(!pathFile.exists())
      {
        pathFile.mkdirs();
      }
      //解决zip文件中有中文目录或者中文文件
      ZipFile zip = new ZipFile(zipFile, Charset.forName("GBK"));
      for(Enumeration entries = zip.entries(); entries.hasMoreElements();)
      {
        ZipEntry entry = (ZipEntry)entries.nextElement();
        String zipEntryName = entry.getName();
        InputStream in = zip.getInputStream(entry);
        String outPath = (descDir+zipEntryName).replaceAll("\\*", "/");;
        //判断路径是否存在,不存在则创建文件路径
        File file = new File(outPath.substring(0, outPath.lastIndexOf('/')));
        if(!file.exists())
        {
          file.mkdirs();
        }
        //判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压
        if(new File(outPath).isDirectory())
        {
          continue;
        }
        //输出文件路径信息
        System.out.println(outPath);
        OutputStream out = new FileOutputStream(outPath);
        byte[] buf1 = new byte[1024];
        int len;
        while((len=in.read(buf1))>0)
        {
          out.write(buf1,0,len);
        }
        in.close();
        out.close();
      }
      System.out.println("******************解压完毕********************");
    }

解压tar.gz 文件

package com.hou;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;

import org.apache.tools.tar.TarEntry;
import org.apache.tools.tar.TarInputStream;

/**
 * 解压tar.gz 文件
 * ClassName: Test01
 * @Description: TODO
 * @author HJJ
 * @date 2018年10月17日
 */
public class Test01 {

    public static void main(String[] args) {
        File file=new File("D:/home/app/data/tiantai/new/pred_2018-10-15.tar.gz");
        String str="D:/home/app/data/tiantai/new/";
        try {
            unTarGz(file,str);
            System.out.println("解压成功");
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

  //------------------------------------------------------------------------------------------------------
    /**
     * 解压tar.gz 文件
     * @param file 要解压的tar.gz文件对象
     * @param outputDir 要解压到某个指定的目录下
     * @throws IOException
     */
    public static void unTarGz(File file,String outputDir) throws IOException{
        TarInputStream tarIn = null;
        try{
            tarIn = new TarInputStream(new GZIPInputStream(
                    new BufferedInputStream(new FileInputStream(file))),
                    1024 * 2);  

            createDirectory(outputDir,null);//创建输出目录  

            TarEntry entry = null;
            while( (entry = tarIn.getNextEntry()) != null ){  

                if(entry.isDirectory()){//是目录
                    entry.getName();
                    createDirectory(outputDir,entry.getName());//创建空目录
                }else{//是文件
                    File tmpFile = new File(outputDir + "/" + entry.getName());
                    createDirectory(tmpFile.getParent() + "/",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);
                        }  

                    }catch(IOException ex){
                        throw ex;
                    }finally{  

                        if(out!=null)
                            out.close();
                    }
                }
            }
        }catch(IOException ex){
            throw new IOException("解压归档文件出现异常",ex);
        } finally{
            try{
                if(tarIn != null){
                    tarIn.close();
                }
            }catch(IOException ex){
                throw new IOException("关闭tarFile出现异常",ex);
            }
        }
    }

    /**
     * 构建目录
     * @param outputDir
     * @param subDir
     */
    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 + "/" + subDir);
        }
        if(!file.exists()){
              if(!file.getParentFile().exists())
                  file.getParentFile().mkdirs();
            file.mkdirs();
        }
    }

}

3.解压指定目录下的zip文件

/**
     * 解压指定目录下的zip文件
     * @param checkPath 检测目录，先从缓存中取，如果缓存中不存在，再从配置文件中提取
     * @param fileName 待解压的zip文件
     * @throws Exception
     */
    private static void unzip(String checkPath,String fileName) throws Exception {

        if (checkPath.startsWith("~")) {
            checkPath = System.getProperty("user.home")+ checkPath.substring(1);
        }

//        final String currentPath = checkPath;
        final String currentPath = "D:/home/app/data/tiantai/new/";

//        String fileRoot = checkPath + File.separator +  fileName;  //zip文件路径
        String fileRoot = "D:/home/app/data/tiantai/new/QUNAR_ONE_COMMON_PRYPAY_1539141468602.zip";  //zip文件路径
        //System.out.println("解压的zip文件 fileRoot:" + fileRoot);
        System.out.println("解压的zip文件 fileRoot:" + fileRoot);

        FileSystem fs = FileSystems.newFileSystem(Paths.get(fileRoot),null);

        Files.walkFileTree(fs.getPath("/"),new SimpleFileVisitor<Path>(){ //遍历文件系统时，可获取文件属性
            /**
             * Invoked for a file in a directory.
             * <p>
             * <p> Unless overridden, this method returns {@link FileVisitResult#CONTINUE
             * CONTINUE}.
             *
             * @param file
             * @param attrs
             */
            @Override
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                Path destPath = Paths.get(currentPath,file.toString());
                Files.deleteIfExists(destPath);//如果目标文件已经存在，则删除
                Files.createDirectories(destPath.getParent());//创建文件的父目录，不管是文件还是目录
                Files.move(file, destPath);

                return FileVisitResult.CONTINUE;
            }
        });

        fs.close();//关闭文件系统

        //文件解压成功后,删除zip文件
        File delZipFile = new File(fileRoot);
        if(delZipFile.exists() && delZipFile.isFile()){
            boolean d = delZipFile.delete();
            if(d){
               // System.out.println(fileRoot + " 文件已删除...");
                System.out.println((fileRoot + " 文件已删除..."));

            }

        }

    }

4.

public static void Decompressing2() throws IOException {
//        String path = "D:/home/app/data/tiantai/new/";
        String path = "D:/home/app/data/tiantai/new/";
        ZipEntry zipEntry = null;
        try {
            // ZipInputStream读取压缩文件
            FileInputStream file=new FileInputStream(new File(path+"QUNAR_ONE_COMMON_PRYPAY_1539679543536.zip"));
//            ZipFile zipFile = new ZipFile(new File(path+"QUNAR_ONE_COMMON_PRYPAY_1539141468602.zip"),Charset.forName("gbk")) ;
            ZipInputStream zipInputStream = new ZipInputStream(file);
            // 写入到缓冲流中
            BufferedInputStream bufferedInputStream = new BufferedInputStream(zipInputStream);
            File fileOut = null;
            // 读取压缩文件中的一个文件
//            zipEntry = zipInputStream.getNextEntry();
            while ((zipEntry = zipInputStream.getNextEntry()) != null) {
                // 若当前zipEntry是一个文件夹
                if (zipEntry.isDirectory()) {
                    fileOut = new File(path + "//" +zipEntry.getName());
                    // 在指定路径下创建文件夹
                    if (!fileOut.exists()) {
                        fileOut.mkdirs();
                    }
                //若是文件
                } else {
                    // 原文件名与指定路径创建File对象(解压后文件的对象)
                    fileOut = new File(path, zipEntry.getName());
                    try(
                            FileOutputStream fileOutputStream = new FileOutputStream(fileOut);
                            BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream);){
                        //将文件写入到指定file中
                        int b = 0;
                        while ((b = bufferedInputStream.read()) != -1) {
                            bufferedOutputStream.write(b);
                    }
                    }catch (Exception e) {
                        e.printStackTrace();
                    }
                }

            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

5

readByZipInputStream("D:/home/app/data/tiantai/new/QUNAR_ONE_COMMON_PRYPAY_1539065367654.zip", "d:/");

public static void readByZipInputStream(String archive, String decompressDir)
            throws FileNotFoundException, IOException {
        BufferedInputStream bi;  

        ZipFile zf = new ZipFile(archive, Charset.forName("gbk"));//支持中文  

        Enumeration e = zf.entries();
        while (e.hasMoreElements()) {
            ZipEntry ze2 = (ZipEntry) e.nextElement();
            String entryName = ze2.getName();
            String path = decompressDir + "/" + entryName;
            if (ze2.isDirectory()) {
                System.out.println("正在创建解压目录 - " + entryName);
                File decompressDirFile = new File(path);
                if (!decompressDirFile.exists()) {
                    decompressDirFile.mkdirs();
                }
            } else {
                System.out.println("正在创建解压文件 - " + entryName);
                String fileDir = path.substring(0, path.lastIndexOf("/"));
                File fileDirFile = new File(fileDir);
                if (!fileDirFile.exists()) {
                    fileDirFile.mkdirs();
                }
                BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(
                        decompressDir + "/" + entryName));  

                bi = new BufferedInputStream(zf.getInputStream(ze2));
                byte[] readContent = new byte[1024];
                int readCount = bi.read(readContent);
                while (readCount != -1) {
                    bos.write(readContent, 0, readCount);
                    readCount = bi.read(readContent);
                }
                bos.close();
            }
        }
        zf.close();
    }

6.修改文件名

/**
     * 通过文件路径直接修改文件名
     * @param filePath 需要修改的文件的完整路径
     * @param newFileName 需要修改的文件的名称
     * @return
     */
    public static String FixFileName(String filePath, String newFileName) {
        File f = new File(filePath);
        if (!f.exists()) { // 判断原文件是否存在
            return null;
        }

        newFileName = newFileName.trim();
        if ("".equals(newFileName) || newFileName == null) // 文件名不能为空
            return null;

        String newFilePath = null;
        if (f.isDirectory()) { // 判断是否为文件夹
            newFilePath = filePath.substring(0, filePath.lastIndexOf("/")) + "/" + newFileName;
        } else {
            newFilePath = filePath.substring(0, filePath.lastIndexOf("/"))+ "/"  + newFileName ;
        }
        File nf = new File(newFilePath);
        if (!f.exists()) { // 判断需要修改为的文件是否存在（防止文件名冲突）
            return null;
        }

        try {
            f.renameTo(nf); // 修改文件名
        } catch(Exception err) {
            err.printStackTrace();
            return null;
        }

        return newFilePath;
    }