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  • 【转载】用java压缩文件夹/文件

    压缩文件夹代码:
    import java.io.File;
    import org.apache.tools.zip.ZipOutputStream; //这个包在ant.jar里,要到官方网下载
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.util.zip.ZipInputStream;
    import java.util.zip.ZipEntry;
    
    public class CompressBook {
    
    /**//*
    * inputFileName 输入一个文件夹
    * zipFileName 输出一个压缩文件夹
    */
    public void zip(String inputFileName) throws Exception {
        String zipFileName = "C:\\temp\\"; //打包后文件名字
        if(com.turbocms.tools.Config.Debug.equals("true"))System.out.println(zipFileName);
        zip(zipFileName, new File(inputFileName));
    }
    public void zipOfName(String inputFileName,String zipFileName) throws Exception {
        zip(zipFileName, new File(inputFileName));
    }
    
    private void zip(String zipFileName, File inputFile) throws Exception {
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
        zip(out, inputFile, "");
        if(com.turbocms.tools.Config.Debug.equals("true"))System.out.println("zip done");
        out.close();
    }
    
    private void zip(ZipOutputStream out, File f, String base) throws Exception {
        if (f.isDirectory()) {
           File[] fl = f.listFiles();
           out.putNextEntry(new org.apache.tools.zip.ZipEntry(base + "/"));
           base = base.length() == 0 ? "" : base + "/";
           for (int i = 0; i < fl.length; i++) {
           zip(out, fl[i], base + fl[i].getName());
         }
        }else {
           out.putNextEntry(new org.apache.tools.zip.ZipEntry(base));
           FileInputStream in = new FileInputStream(f);
           int b;
           if(com.turbocms.tools.Config.Debug.equals("true"))System.out.println(base);
           while ( (b = in.read()) != -1) {
            out.write(b);
         }
         in.close();
       }
    }
    
    public static void main(String [] temp){
        CompressBook book = new CompressBook();
        try {
          // book.zip("E:\\temp\\pes\\temp\\115411B78AF6F2CDD513393FB8F0A8C6");//你要压缩的文件夹
        }catch (Exception ex) {
           ex.printStackTrace();
       }
    }
    }
    

    文件压缩

     

    import java.io.*;
    import java.util.zip.*;//ZipOutputStream这个流在这里
    import java.util.*;
    
    public class ZipOutputStreamTest
    {
         public static void main(String[] args) throws Exception
         {
           File f = new File("a.jpg");
           FileInputStream fis = new FileInputStream(f);
           BufferedInputStream bis = new BufferedInputStream(fis);
           byte[] buf = new byte[1024];
           int len;
           FileOutputStream fos = new FileOutputStream(f.getName()+".zip");
           BufferedOutputStream bos = new BufferedOutputStream(fos);
           ZipOutputStream zos = new ZipOutputStream(bos);//压缩包
           ZipEntry ze = new ZipEntry(f.getName());//这是压缩包名里的文件名
           zos.putNextEntry(ze);//写入新的 ZIP 文件条目并将流定位到条目数据的开始处
    
           while((len=bis.read(buf))!=-1)
           {
              zos.write(buf,0,len);
              zos.flush();
           }
           bis.close();
           zos.close(); 
         }
    }
    
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  • 原文地址:https://www.cnblogs.com/lan0725/p/1980097.html
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