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Detailed explanation of the power node of Java compression and decompression zip technology (picture)

黄舟
黄舟Original
2017-05-21 10:23:381904browse

Java解压缩zip - 多个文件(包括文件夹),对多个文件和文件夹进行压缩,对复杂的文件目录进行解压。压缩方法使用的是可变参数,可以压缩1到多个文件

Java解压缩zip - 多个文件(包括文件夹),对多个文件和文件夹进行压缩,对复杂的文件目录进行解压。压缩方法使用的是可变参数,可以压缩1到多个文件..可以写数组的方式或者一个个写到参数列表里面...

 ZipFiles(zip,"abc",new File("d:/English"),new File("d:/发放数据.xls"));

测试文件目录结构: 

Detailed explanation of the power node of Java compression and decompression zip technology (picture)

测试的压缩内容:English文件夹和同级的两个excel文件

 File[] files = new File[]{new File("d:/English"),new File("d:/发放数据.xls"),new File("d:/中文名称.xls")};

下面是压缩的代码:

 /** 
  * 压缩文件-由于out要在递归调用外,所以封装一个方法用来 
  * 调用ZipFiles(ZipOutputStream out,String path,File... srcFiles) 
  * @param zip 
  * @param path 
  * @param srcFiles 
  * @throws IOException 
  * 
  */ 
  public static void ZipFiles(File zip,String path,File... srcFiles) throws IOException{ 
   ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zip)); 
   ZipTest.ZipFiles(out,path,srcFiles); 
   out.close(); 
   System.out.println("*****************压缩完毕*******************"); 
  } 
  /** 
  * 压缩文件-File 
  * @param zipFile zip文件 
  * @param srcFiles 被压缩源文件 
  * 
  */ 
  public static void ZipFiles(ZipOutputStream out,String path,File... srcFiles){ 
   path = path.replaceAll("\\*", "/"); 
   if(!path.endsWith("/")){ 
    path+="/"; 
   } 
   byte[] buf = new byte[1024]; 
   try { 
    for(int i=0;i<srcFiles.length;i++){ 
     if(srcFiles[i].isDirectory()){ 
      File[] files = srcFiles[i].listFiles(); 
      String srcPath = srcFiles[i].getName(); 
      srcPath = srcPath.replaceAll("\\*", "/"); 
      if(!srcPath.endsWith("/")){ 
       srcPath+="/"; 
      } 
      out.putNextEntry(new ZipEntry(path+srcPath)); 
     ZipFiles(out,path+srcPath,files); 
     } 
     else{ 
      FileInputStream in = new FileInputStream(srcFiles[i]); 
      System.out.println(path + srcFiles[i].getName()); 
      out.putNextEntry(new ZipEntry(path + srcFiles[i].getName())); 
      int len; 
      while((len=in.read(buf))>0){ 
       out.write(buf,0,len); 
      } 
      out.closeEntry(); 
      in.close(); 
     } 
   } 
   } catch (Exception e) { 
    e.printStackTrace(); 
   } 
 }

在压缩的时候,针对文件夹进行判断,然后递归压缩文件。

然后是解压:

/** 
  * 解压到指定目录 
  * @param zipPath 
  * @param descDir 
  * 
  */ 
  public static void unZipFiles(String zipPath,String descDir)throws IOException{ 
   unZipFiles(new File(zipPath), descDir); 
  } 
  /** 
  * 解压文件到指定目录 
  * @param zipFile 
  * @param descDir 
  * 
  */ 
  @SuppressWarnings("rawtypes") 
  public static void unZipFiles(File zipFile,String descDir)throws IOException{ 
   File pathFile = new File(descDir); 
   if(!pathFile.exists()){ 
    pathFile.mkdirs(); 
   } 
  ZipFile zip = new ZipFile(zipFile); 
   for(Enumeration entries = zip.getEntries();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(&#39;/&#39;))); 
    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********************"); 
  }

解压的时候,针对文件夹判断创建不存在的文件夹,对文件夹只创建,不进行解压..因为解压是针对文件的,不是文件夹,文件夹需要自己创建。

测试方法:

 public static void main(String[] args) throws IOException { 
   /** 
   * 压缩文件 
   */ 
   File[] files = new File[]{new File("d:/English"),new File("d:/发放数据.xls"),new File("d:/中文名称.xls")}; 
   File zip = new File("d:/压缩.zip"); 
   ZipFiles(zip,"abc",files); 
   
   /** 
   * 解压文件 
   */ 
   File zipFile = new File("d:/压缩.zip"); 
   String path = "d:/zipfile/"; 
   unZipFiles(zipFile, path); 
  }

测试方法并没有对异常做任何处理,这是不对的,请不要模仿。

输出结果:

 abc/English/templete.xls 
 abc/English/中文/bjpowernode/isea/533/abc/templete.xls 
 abc/English/中文/bjpowernode/isea/533/abc/zipfile2/templete.xls 
 abc/English/中文/bjpowernode/isea/533/abc/zipfile2/zipfile/abc/templete.xls 
 abc/English/中文/bjpowernode/isea/533/abc/zipfile2/zipfile/abc/zipfile2/templete.xls 
 abc/English/中文/bjpowernode/isea/533/abc/zipfile2/zipfile/abc/zipfile2/领卡清单.xls 
 abc/English/中文/bjpowernode/isea/533/abc/zipfile2/领卡清单.xls 
 abc/English/中文/bjpowernode/isea/templete.xls 
 abc/English/中文/bjpowernode/isea/领卡清单.xls 
 abc/English/中文/bjpowernode/templete.xls 
 abc/English/领卡清单.xls 
 abc/发放数据.xls 
 abc/中文名称.xls 
 *****************压缩完毕******************* 
 d:/zipfile/abc/中文名称.xls 
 d:/zipfile/abc/发放数据.xls 
 d:/zipfile/abc/English/领卡清单.xls 
 d:/zipfile/abc/English/中文/bjpowernode/templete.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/领卡清单.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/templete.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/533/abc/templete.xls 
 d:/zipfile/abc/English/templete.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/533/abc/zipfile2/templete.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/533/abc/zipfile2/zipfile/abc/templete.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/533/abc/zipfile2/zipfile/abc/zipfile2/templete.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/533/abc/zipfile2/zipfile/abc/zipfile2/领卡清单.xls 
 d:/zipfile/abc/English/中文/bjpowernode/isea/533/abc/zipfile2/领卡清单.xls 
 ******************解压完毕********************

Detailed explanation of the power node of Java compression and decompression zip technology (picture)

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