Java压缩文件工具类ZipUtil使用方法代码示例

 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"); } }

 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 } } }