com.zb.app.common.file.FileUtils.java Source code

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Here is the source code for com.zb.app.common.file.FileUtils.java

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/*
 * Copyright 2011-2016 ZuoBian.com All right reserved. This software is the confidential and proprietary information of
 * ZuoBian.com ("Confidential Information"). You shall not disclose such Confidential Information and shall use it only
 * in accordance with the terms of the license agreement you entered into with ZuoBian.com.
 */
package com.zb.app.common.file;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

import org.apache.commons.io.IOUtils;

/**
 * @author zxc Sep 4, 2014 4:33:49 PM
 */
public class FileUtils {

    public static File stream2file(InputStream in) throws IOException {
        final File tempFile = File.createTempFile("stream2file", ".tmp");
        tempFile.deleteOnExit();

        try (FileOutputStream out = new FileOutputStream(tempFile)) {
            IOUtils.copy(in, out);
        }
        return tempFile;
    }

    // jartoDir
    public static void unJar(File jarFile, File toDir) throws IOException {
        JarFile jar = new JarFile(jarFile);
        try {
            Enumeration<JarEntry> entries = jar.entries();
            while (entries.hasMoreElements()) {
                JarEntry entry = (JarEntry) entries.nextElement();
                if (!entry.isDirectory()) {
                    InputStream in = jar.getInputStream(entry);
                    try {
                        File file = new File(toDir, entry.getName());
                        if (!file.getParentFile().mkdirs()) {
                            if (!file.getParentFile().isDirectory()) {
                                throw new IOException("Mkdirs failed to create " + file.getParentFile().toString());
                            }
                        }
                        OutputStream out = new FileOutputStream(file);
                        try {
                            byte[] buffer = new byte[8192];
                            int i;
                            while ((i = in.read(buffer)) != -1) {
                                out.write(buffer, 0, i);
                            }
                        } finally {
                            out.close();
                        }
                    } finally {
                        in.close();
                    }
                }
            }
        } finally {
            jar.close();
        }
    }
}