FileUtils.java

package com.antfortune.freeline.util;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

/**
 * Created by huangyong on 16/7/30.
 */
public class FileUtils {

    public static void rm(File f) {
        if (f.isDirectory()) {
            for (File ff : f.listFiles()) {
                rm(ff);
            }
            f.delete();
        } else if (f.isFile()) {
            f.delete();
        }
    }

    public static void unzip(File zipFile, File targetDirectory) throws IOException {
        ZipInputStream zis = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFile)));
        try {
            ZipEntry ze;
            int count;
            byte[] buffer = new byte[8192];
            while ((ze = zis.getNextEntry()) != null) {
                File file = new File(targetDirectory, ze.getName());
                File dir = ze.isDirectory() ? file : file.getParentFile();
                if (!dir.isDirectory() && !dir.mkdirs())
                    throw new FileNotFoundException("Failed to ensure directory: " + dir.getAbsolutePath());
                if (ze.isDirectory())
                    continue;
                FileOutputStream fout = new FileOutputStream(file);
                try {
                    while ((count = zis.read(buffer)) != -1)
                        fout.write(buffer, 0, count);
                } finally {
                    fout.close();
                }
            }
        } finally {
            zis.close();
        }
    }

}