test

package com.file.gZip;

import java.io.*; import java.util.ArrayList; import java.util.List; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream;

public class ZipUtils { private static final int BUFFER_SIZE = 2 * 1024;

public static void toZip(String srcDir, OutputStream out, boolean KeepDirStructure)
        throws RuntimeException{

    long start = System.currentTimeMillis();
    ZipOutputStream zos = null ;
    try {
        zos = new ZipOutputStream(out);
        File sourceFile = new File(srcDir);
        compress(sourceFile,zos,sourceFile.getName(),KeepDirStructure);
        long end = System.currentTimeMillis();
        System.out.println("完成，耗时：" + (end - start) +" ms");
    } catch (Exception e) {
        throw new RuntimeException("zip error from ZipUtils",e);
    }finally{
        if(zos != null){
            try {
                zos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

}


public static void toZip(List<File> srcFiles , OutputStream out)throws RuntimeException {
    long start = System.currentTimeMillis();
    ZipOutputStream zos = null ;
    try {
        zos = new ZipOutputStream(out);
        for (File srcFile : srcFiles) {
            byte[] buf = new byte[BUFFER_SIZE];
            zos.putNextEntry(new ZipEntry(srcFile.getName()));
            int len;
            FileInputStream in = new FileInputStream(srcFile);
            while ((len = in.read(buf)) != -1){
                zos.write(buf, 0, len);
            }
            zos.closeEntry();
            in.close();
        }
        long end = System.currentTimeMillis();
        System.out.println("完成，耗时：" + (end - start) +" ms");
    } catch (Exception e) {
        throw new RuntimeException("zip error from ZipUtils",e);
    }finally{
        if(zos != null){
            try {
                zos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}



private static void compress(File sourceFile, ZipOutputStream zos, String name,
                             boolean KeepDirStructure) throws Exception{
    byte[] buf = new byte[BUFFER_SIZE];
    if(sourceFile.isFile()){
        zos.putNextEntry(new ZipEntry(name));
        int len;
        FileInputStream in = new FileInputStream(sourceFile);
        while ((len = in.read(buf)) != -1){
            zos.write(buf, 0, len);
        }
        zos.closeEntry();
        in.close();
    } else {
        File[] listFiles = sourceFile.listFiles();
        if(listFiles == null || listFiles.length == 0){
            if(KeepDirStructure){
                zos.putNextEntry(new ZipEntry(name + "/"));
                zos.closeEntry();
            }

        }else {
            for (File file : listFiles) {
                if (KeepDirStructure) {
                    compress(file, zos, name + "/" + file.getName(),KeepDirStructure);
                } else {
                    compress(file, zos, file.getName(),KeepDirStructure);
                }

            }
        }
    }
}

public static void main(String[] args) throws Exception {
    FileOutputStream fos1= new FileOutputStream(new File("G:/a/test.txt"));
    ZipUtils.toZip("G:/a/b", fos1,true);
}

}