package org.yeshi.utils;
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import java.io.*;
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import javax.servlet.http.HttpServletRequest;
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import org.apache.commons.codec.digest.DigestUtils;
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import org.apache.commons.io.IOUtils;
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public class FileUtil {
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@SuppressWarnings("deprecation")
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public static String getRealPath(HttpServletRequest request, String folderName) {
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String f = request.getRealPath(folderName);
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if (!new File(f).exists())
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new File(f).mkdirs();
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return f;
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}
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public static String getFileMD5(File file) throws IOException {
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FileInputStream fis = new FileInputStream(file);
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String md5 = DigestUtils.md5Hex(IOUtils.toByteArray(fis));
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IOUtils.closeQuietly(fis);
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return md5;
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}
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public static void deleteFileDir(File path) {
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if (!path.exists())
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return;
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if (path.isFile()) {
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path.delete();
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return;
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}
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File[] files = path.listFiles();
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for (int i = 0; i < files.length; i++) {
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deleteFileDir(files[i]);
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}
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path.delete();
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}
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/**
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* 将输入流存为本地文件
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*
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* @param inputStream
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* @param path
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* @return
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* @throws IOException
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*/
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public static String saveAsFile(InputStream inputStream, String path) throws IOException {
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if (!new File(path).exists()) {
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new File(path).createNewFile();
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}
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FileOutputStream fileOut = new FileOutputStream(new File(path));
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byte[] buf = new byte[1024 * 8];
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while (true) {
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int read = 0;
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if (inputStream != null) {
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read = inputStream.read(buf);
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}
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if (read == -1) {
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break;
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}
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fileOut.write(buf, 0, read);
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}
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fileOut.close();
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return path;
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}
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/**
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* 获取缓存文件夹目录
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*
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* @return
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*/
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public static String getCacheDir() {
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String os = System.getProperty("os.name");
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if (os.toLowerCase().startsWith("win")) {
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File f = new File("D:/cache");
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if (!f.exists())
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f.mkdirs();
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return f.getPath();
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} else {
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File f = new File("/usr/local/cache");
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if (!f.exists())
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f.mkdirs();
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return f.getPath();
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}
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}
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/**
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* 将输入流存为本地文件
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*
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* @param b
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* @param path
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* @return
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* @throws IOException
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*/
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public static String saveAsFileByte(byte[] b, String path) throws IOException {
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if (!new File(path).exists()) {
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new File(path).createNewFile();
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}
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FileOutputStream fileOut = new FileOutputStream(path);
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fileOut.write(b);
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fileOut.flush();
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fileOut.close();
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return path;
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}
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/**
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* 复制inputStream
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* @param input
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* @return
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*/
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public static ByteArrayOutputStream cloneInputStream(InputStream input) {
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try {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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byte[] buffer = new byte[1024];
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int len;
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while ((len = input.read(buffer)) > -1) {
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baos.write(buffer, 0, len);
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}
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baos.flush();
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return baos;
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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}
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}
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