Zip压缩工具类--Java免费学习网

最新推荐文章于 2018-10-26 12:28:54 发布

转载最新推荐文章于 2018-10-26 12:28:54 发布 · 261 阅读

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本文介绍了一个用于Java的文件压缩工具类实现，通过Apache工具包进行文件夹及其中内容的压缩处理，生成指定路径下的ZIP文件。

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package com.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.tools.zip.ZipOutputStream;

public class ZipFileUtil {

private static ZipFileUtil instance = new ZipFileUtil();

public ZipFileUtil() {
}

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public static ZipFileUtil getInstance(){
return instance;
}

/**//*
   * 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:\\test.zip"; // 打包后文件名字
  System.out.println(zipFileName);
  zip(zipFileName, new File(inputFileName));
}

public void zip(String inputFileName, String zipPath, String zipName) throws Exception {
  //String zipFileName = "c:\\test.zip"; // 打包后文件名字
  String zipFileName = zipPath + zipName;
  System.out.println(zipFileName);
  zip(zipFileName.trim(), new File(inputFileName));
}

private 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();
}

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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;
   System.out.println(base);
   while ((b = in.read()) != -1) {
    out.write(b);
   }
   in.close();
  }
}

public static void main(String[] temp) {
  ZipFileUtil book = new ZipFileUtil();
  try {
   book.zip("f:\\zip\\1");// 你要压缩的文件夹
  } catch (Exception ex) {
   ex.printStackTrace();
  }
}

}

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