文件压缩工具类

package com.sinotrans.filesystem.util;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;import java.util.zip.ZipOutputStream;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;public class CustomizationZipUtil {protected static final Log log = LogFactory.getLog(CustomizationZipUtil.class);/** * @描述 压缩文件 * @param srcFiles *            压缩路径 * @param zipPath *            目标全路径 */public static void zipFileWithTier(String srcFiles, String zipPath) {try {FileOutputStream zipFile = new FileOutputStream(zipPath);BufferedOutputStream buffer = new BufferedOutputStream(zipFile);ZipOutputStream out = new ZipOutputStream(buffer);zipFiles(srcFiles, out, "");out.close();} catch (IOException e) {// TODO Auto-generated catch blocklog.error("", e);}}public static void zipFiles(String filePath, ZipOutputStream out,String prefix) throws IOException {File file = new File(filePath);if (file.isDirectory()) {if (file.listFiles().length == 0) {ZipEntry zipEntry = new ZipEntry(prefix + file.getName() + "/");out.putNextEntry(zipEntry);out.closeEntry();} else {prefix += file.getName() + File.separator;for (File f : file.listFiles())zipFiles(f.getAbsolutePath(), out, prefix);}} else {FileInputStream in = new FileInputStream(file);ZipEntry zipEntry = new ZipEntry(prefix + file.getName());out.putNextEntry(zipEntry);byte[] buf = new byte[1024];int len;while ((len = in.read(buf)) > 0) {out.write(buf, 0, len);}out.closeEntry();in.close();}}/** * @描述 解压缩文件 * @param zipFilePath *            待解压文件路径 * @param prefix *            目标路径 * @throws IOException */public static void unzipFilesWithTier(String zipFilePath, String prefix)throws IOException {byte[] bytes = readFileByte(zipFilePath);prefix = prefix + File.separator;InputStream bais = new ByteArrayInputStream(bytes);ZipInputStream zin = new ZipInputStream(bais);ZipEntry ze;while ((ze = zin.getNextEntry()) != null) {if (ze.isDirectory()) {File file = new File(prefix + ze.getName());if (!file.exists())file.mkdirs();continue;}File file = new File(prefix + ze.getName());if (!file.getParentFile().exists())file.getParentFile().mkdirs();ByteArrayOutputStream toScan = new ByteArrayOutputStream();byte[] buf = new byte[1024];int len;while ((len = zin.read(buf)) > 0) {toScan.write(buf, 0, len);}byte[] fileOut = toScan.toByteArray();toScan.close();writeByteFile(fileOut, new File(prefix + ze.getName()));}zin.close();bais.close();}@SuppressWarnings("resource")public static byte[] readFileByte(String filename) throws IOException {if (filename == null || filename.equals("")) {throw new NullPointerException("File is not exist!");}File file = new File(filename);long len = file.length();byte[] bytes = new byte[(int) len];BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream(file));int r = bufferedInputStream.read(bytes);if (r != len)throw new IOException("Read file failure!");bufferedInputStream.close();return bytes;}public static String writeByteFile(byte[] bytes, File file) {FileOutputStream fos = null;try {fos = new FileOutputStream(file);fos.write(bytes);} catch (FileNotFoundException e) {log.error("", e);} catch (IOException e) {log.error("", e);} finally {if (fos != null) {try {fos.close();} catch (IOException e) {log.error("", e);}}}return "success";}}