java 文件压缩

package com.hwj.utils;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.apache.commons.io.FileUtils;
public class Test {

	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
//		File file = new File("F:\\tmp\\image\\1564474497092");
		crteateZip("F:\\tmp\\image\\1564474497092");
	}

	public static void crteateZip(String src) throws IOException {
		ByteArrayOutputStream byteArrayOutputStream=new ByteArrayOutputStream();
//		FileOutputStream fos = new FileOutputStream("F:\\tmp\\image\\test.zip");
		ZipOutputStream zipOutputStream=new ZipOutputStream(byteArrayOutputStream);
		File file=new File(src);
		a(zipOutputStream, file, "");
		//压缩的路径
		FileOutputStream fileOutputStream=new FileOutputStream(new File("F:\\tmp\\image\\test.zip"));
		fileOutputStream.write(byteArrayOutputStream.toByteArray());
	}
	public static void a(ZipOutputStream zipOutputStream,File file,String dir) throws IOException {
		//如果不是文件，遍历文件夹目录
		if(file.isDirectory()) {
			File[] files=file.listFiles();
			//会在压缩文件中建立名字为 dir的文件夹
			zipOutputStream.putNextEntry(new ZipEntry(dir+"/"));
			dir=dir.length()==0 ? "" :  dir+"/";
			for(int i=0;i<files.length;i++) {
				a(zipOutputStream,files[i],dir+files[i].getName());
			}
		}else {
			//如果是文件将文件进行压缩
			//dir字符串的格式为 x/y
			//会在压缩文件中建立名字为x的文件夹中建立文件y文件
			ZipEntry zipEntry=new ZipEntry(dir);
			zipOutputStream.putNextEntry(zipEntry);
			//压缩内容写入zipOutputStream流
			zipOutputStream.write(FileUtils.readFileToByteArray(file));
			zipOutputStream.flush();
			zipOutputStream.closeEntry();
		}
	}

}