java 把文件和目录文件夹压缩成 zip 格式的-优快云博客

本文介绍了使用Java实现文件和目录的压缩操作，包括文件压缩为zip文件和目录压缩为zip文件的过程，提供了完整的代码实现。

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package text;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

//=====================目录压缩=========================

public class ZipFile {

/*
* inputFileName 输入一个文件夹 zipFileName 输出一个压缩文件夹
*/
public static void zip(String inputFileName) throws Exception {
  String zipFileName = "E:\\test.zip"; // 打包后文件名字
  //System.out.println(zipFileName);
  zip(zipFileName, new File(inputFileName));

}

private static void zip(String zipFileName, File inputFile) throws Exception {
  ZipOutputStream out = new ZipOutputStream(new FileOutputStream(
    zipFileName));
  zip(out, inputFile, "");
  //System.out.println("zip done");
  out.close();
}

private static void zip(ZipOutputStream out, File f, String base) throws Exception {
  if (f.isDirectory()) {
   File[] fl = f.listFiles();
   out.putNextEntry(new 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 ZipEntry(base));
   FileInputStream in = new FileInputStream(f);
   int b;
   //System.out.println(base);
   while ((b = in.read()) != -1) {
    out.write(b);
   }
   in.close();
  }
}

public static void main(String [] temp){
   try {
    zip("E:\\ftl");//你要压缩的文件夹
    }catch (Exception ex) {
     ex.printStackTrace();
    }
   }
}

//=====================目录压缩=========================

//=====================文件压缩=========================
/*//把文件压缩成zip
File zipFile = new File("E:/demo.zip");
//定义输入文件流
InputStream input = new FileInputStream(file);
//定义压缩输出流
ZipOutputStream zipOut = null;
//实例化压缩输出流,并制定压缩文件的输出路径就是E盘下,名字叫 demo.zip
zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
zipOut.putNextEntry(new ZipEntry(file.getName()));
//设置注释
zipOut.setComment("www.demo.com");
int temp = 0;
while((temp = input.read()) != -1) {
zipOut.write(temp);
}
input.close();
zipOut.close();*/
//==============================================

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