Java如何实现ZIP压缩与解压

Java如何实现ZIP压缩与解压，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

程序实现了ZIP压缩。共分为2部分 ： 压缩（compression）与解压（decompression）

大致功能包括用了多态，递归等JAVA核心技术，可以对单个文件和任意级联文件夹进行压缩和解压。 需在代码中自定义源输入路径和目标输出路径。

package com.han;  import java.io.*;  import java.util.zip.*;    public class CopyOfMyZipCompressing {      private int k=1;   //定义递归次数变量      public CopyOfMyZipCompressing() {          // TODO Auto-generated constructor stub      }       public static void main(String[] args) {          // TODO Auto-generated method stub          long startTime=System.currentTimeMillis();          CopyOfMyZipCompressing book=new CopyOfMyZipCompressing();          try {              book.zip("C:\\Users\\HAN\\Desktop\\stock\\SpectreCompressed.zip", //自定义的zip输出路径                      new File("C:\\Users\\HAN\\Desktop\\CombinedSpectres.txt")); //自定义的源输入路径，即要压缩的文件或文件夹          } catch (Exception e) {              // TODO Auto-generated catch block              e.printStackTrace();          }          long endTime=System.currentTimeMillis();          System.out.println("耗费时间： "+(endTime-startTime)+" ms");      }       private void zip(String zipFileName, File inputFile) throws Exception{          System.out.println("压缩中...");          ZipOutputStream out=new ZipOutputStream(new FileOutputStream(zipFileName));          BufferedOutputStream bo=new BufferedOutputStream(out);          zip(out,inputFile, "/"+inputFile.getName(),bo);          bo.close();          out.close();  //输出流关闭          System.out.println("压缩完成");      }      private void zip(ZipOutputStream out, File f, String base, BufferedOutputStream bo)      throws Exception{ //方法重载          if (f.isDirectory()){              File[] fl=f.listFiles();              for(int i=0;i<fl.length;i++){                  zip(out, fl[i],base+"/"+fl[i].getName(),bo);    //递归遍历子文件夹              }              System.out.println("第"+k+"次递归");              k++;          }else{              out.putNextEntry(new ZipEntry(base)); // 创建zip压缩进入点base              System.out.println(base);              FileInputStream in=new FileInputStream(f);              BufferedInputStream bi=new BufferedInputStream(in);              int b;              while((b=bi.read())!=-1){                  bo.write(b); //将字节流写入当前zip目录              }              bi.close();              in.close(); //输入流关闭          }      }  }

package com.han;   import java.io.*;  import java.util.zip.*;   public class CopyOfMyzipDecompressing {            public static void main(String[] args) {          // TODO Auto-generated method stub          long startTime=System.currentTimeMillis();          try {              ZipInputStream Zin=new ZipInputStream(new FileInputStream(                      "C:\\Users\\HAN\\Desktop\\stock\\SpectreCompressed.zip"));//输入源zip路径              BufferedInputStream Bin=new BufferedInputStream(Zin);              String Parent="C:\\Users\\HAN\\Desktop"; //输出路径（文件夹目录）              File Fout=null;              ZipEntry entry;              try {                  while((entry = Zin.getNextEntry())!=null && !entry.isDirectory()){                      Fout=new File(Parent,entry.getName());                      if(!Fout.exists()){                          (new File(Fout.getParent())).mkdirs();                      }                      FileOutputStream out=new FileOutputStream(Fout);                      BufferedOutputStream Bout=new BufferedOutputStream(out);                      int b;                      while((b=Bin.read())!=-1){                          Bout.write(b);                      }                      Bout.close();                      out.close();                      System.out.println(Fout+"解压成功");                      }                  Bin.close();                  Zin.close();              } catch (IOException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              }          } catch (FileNotFoundException e) {              // TODO Auto-generated catch block              e.printStackTrace();          }          long endTime=System.currentTimeMillis();          System.out.println("耗费时间： "+(endTime-startTime)+" ms");      }   }

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