Java压缩和解压文件工具类ZipUtil

来源：互联网发布：招聘网络总监编辑：程序博客网时间：2024/05/17 00:13

用于服务器端打包文件的，将压缩后的文件写入到response输出流即可实现在服务器端打包下载，支持多级目录嵌套。
测试时可以先用ZipUtil.zip压缩某个文件夹test，得到压缩文件test.zip，然后将文件夹test删除，用ZipUtil.unzip解压test.zip即可还原。

PS：需要解决中文乱码的朋友可以参考此处 http://log-cd.iteye.com/blog/585647

1. [文件] ZipUtil.java

package com.utility.zip; import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;import java.util.zip.ZipOutputStream; import com.utility.io.IOUtil; /** * 通过Java的Zip输入输出流实现压缩和解压文件 *  * @author liujiduo *  */public final class ZipUtil {     private ZipUtil() {        // empty    }     /**     * 压缩文件     *      * @param filePath     *            待压缩的文件路径     * @return 压缩后的文件     */    public static File zip(String filePath) {        File target = null;        File source = new File(filePath);        if (source.exists()) {            // 压缩文件名=源文件名.zip            String zipName = source.getName() + ".zip";            target = new File(source.getParent(), zipName);            if (target.exists()) {                target.delete(); // 删除旧的文件            }            FileOutputStream fos = null;            ZipOutputStream zos = null;            try {                fos = new FileOutputStream(target);                zos = new ZipOutputStream(new BufferedOutputStream(fos));                // 添加对应的文件Entry                addEntry("/", source, zos);            } catch (IOException e) {                throw new RuntimeException(e);            } finally {                IOUtil.closeQuietly(zos, fos);            }        }        return target;    }     /**     * 扫描添加文件Entry     *      * @param base     *            基路径     *      * @param source     *            源文件     * @param zos     *            Zip文件输出流     * @throws IOException     */    private static void addEntry(String base, File source, ZipOutputStream zos)            throws IOException {        // 按目录分级，形如：/aaa/bbb.txt        String entry = base + source.getName();        if (source.isDirectory()) {            for (File file : source.listFiles()) {                // 递归列出目录下的所有文件，添加文件Entry                addEntry(entry + "/", file, zos);            }        } else {            FileInputStream fis = null;            BufferedInputStream bis = null;            try {                byte[] buffer = new byte[1024 * 10];                fis = new FileInputStream(source);                bis = new BufferedInputStream(fis, buffer.length);                int read = 0;                zos.putNextEntry(new ZipEntry(entry));                while ((read = bis.read(buffer, 0, buffer.length)) != -1) {                    zos.write(buffer, 0, read);                }                zos.closeEntry();            } finally {                IOUtil.closeQuietly(bis, fis);            }        }    }     /**     * 解压文件     *      * @param filePath     *            压缩文件路径     */    public static void unzip(String filePath) {        File source = new File(filePath);        if (source.exists()) {            ZipInputStream zis = null;            BufferedOutputStream bos = null;            try {                zis = new ZipInputStream(new FileInputStream(source));                ZipEntry entry = null;                while ((entry = zis.getNextEntry()) != null                        && !entry.isDirectory()) {                    File target = new File(source.getParent(), entry.getName());                    if (!target.getParentFile().exists()) {                        // 创建文件父目录                        target.getParentFile().mkdirs();                    }                    // 写入文件                    bos = new BufferedOutputStream(new FileOutputStream(target));                    int read = 0;                    byte[] buffer = new byte[1024 * 10];                    while ((read = zis.read(buffer, 0, buffer.length)) != -1) {                        bos.write(buffer, 0, read);                    }                    bos.flush();                }                zis.closeEntry();            } catch (IOException e) {                throw new RuntimeException(e);            } finally {                IOUtil.closeQuietly(zis, bos);            }        }    }     public static void main(String[] args) {        String targetPath = "E:\\Win7壁纸";        File file = ZipUtil.zip(targetPath);        System.out.println(file);        ZipUtil.unzip("F:\\Win7壁纸.zip");    }}

2. [文件] IOUtil.java ~ 815B 下载(228)

package com.utility.io; import java.io.Closeable;import java.io.IOException; /** * IO流工具类 *  * @author liujiduo *  */public class IOUtil {    /**     * 关闭一个或多个流对象     *      * @param closeables     *            可关闭的流对象列表     * @throws IOException     */    public static void close(Closeable... closeables) throws IOException {        if (closeables != null) {            for (Closeable closeable : closeables) {                if (closeable != null) {                    closeable.close();                }            }        }    }     /**     * 关闭一个或多个流对象     *      * @param closeables     *            可关闭的流对象列表     */    public static void closeQuietly(Closeable... closeables) {        try {            close(closeables);        } catch (IOException e) {            // do nothing        }    } }

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