From a6fe405947004d6571806edabd8f14357e144cfa Mon Sep 17 00:00:00 2001 From: 13693261870 <252740454@qq.com> Date: 星期一, 14 十月 2024 17:31:31 +0800 Subject: [PATCH] 1 --- src/main/java/com/se/simu/helper/FileHelper.java | 444 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 444 insertions(+), 0 deletions(-) diff --git a/src/main/java/com/se/simu/helper/FileHelper.java b/src/main/java/com/se/simu/helper/FileHelper.java new file mode 100644 index 0000000..a2357e3 --- /dev/null +++ b/src/main/java/com/se/simu/helper/FileHelper.java @@ -0,0 +1,444 @@ +package com.se.simu.helper; + +import com.twmacinta.util.MD5; +import lombok.extern.slf4j.Slf4j; +import org.apache.commons.codec.digest.DigestUtils; + +import java.io.*; +import java.nio.ByteBuffer; +import java.nio.channels.FileChannel; +import java.nio.charset.StandardCharsets; +import java.security.MessageDigest; +import java.text.DecimalFormat; +import java.util.List; + +/** + * 鏂囦欢甯姪绫� + * + * @author WWW + * @date 2024-09-12 + */ +@Slf4j +public class FileHelper { + public final static String POINT = "."; + + public final static int I16 = 16; + + public static final double D1024 = 1024.0; + + public static final double D1050 = 1050.0; + + public final static int I1000000 = 1000000; + + public static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; + + /** + * 鑾峰彇鏂囦欢鍚� + */ + public static String getFileName(String file) { + int idx = file.lastIndexOf(File.separator); + if (idx > -1) { + return file.substring(idx + 1); + } + + return ""; + } + + /** + * 鑾峰彇鏂囦欢鍚嶇О + */ + public static String getName(String file) { + String fileName = getFileName(file); + int idx = fileName.lastIndexOf("."); + if (idx > -1) { + return fileName.substring(0, idx); + } + + return fileName; + } + + /** + * 鑾峰彇鏂囦欢鎵╁睍鍚� + */ + public static String getExtension(File file) { + if (file == null) { + return null; + } + + String fileName = file.getName().toLowerCase(); + + int idx = fileName.indexOf(POINT); + if (idx == -1) { + return ""; + } + + return fileName.substring(idx); + } + + /** + * 鑾峰彇鏂囦欢鎵╁睍鍚� + */ + public static String getExtension(String fileName) { + if (StringHelper.isEmpty(fileName)) { + return ""; + } + + int idx = fileName.lastIndexOf(POINT); + if (idx == -1) { + return ""; + } + + return fileName.substring(idx).toLowerCase(); + } + + /** + * 鑾峰彇澶氱敤閫斾簰鑱旂綉閭欢鎵╁睍绫诲瀷 + */ + public static String getMime(String ext) { + switch (ext) { + // 鍥剧墖 + case ".tif": + case ".tiff": + return "image/tiff"; + case ".img": + return "application/x-img"; + case ".gif": + return "image/gif"; + case ".jpg": + case ".jpeg": + return "image/jpeg"; + case ".png": + return "image/png"; + // 闊�/瑙嗛 + case ".mp3": + return "audio/mp3"; + case ".mp4": + return "video/mpeg4"; + case ".avi": + return "video/avi"; + case ".mpg": + case ".mpeg": + return "video/mpg"; + case ".wav": + return "audio/wav"; + case ".wma": + return "audio/x-ms-wma"; + case ".swf": + return "application/x-shockwave-flash"; + case ".wmv": + return "video/x-ms-wmv"; + case ".rm": + return "application/vnd.rn-realmedia"; + case ".rmvb": + return "application/vnd.rn-realmedia-vbr"; + // 缃戦〉 + case ".js": + return "application/x-javascript"; + case ".css": + return "text/css"; + case ".asp": + return "text/asp"; + case ".mht": + return "message/rfc822"; + case ".jsp": + case ".htm": + case ".html": + case ".xhtml": + return "text/html"; + case ".xml": + case ".svg": + return "text/xml"; + // 鏂囦欢 + case ".txt": + return "text/plain"; + case ".dbf": + return "application/x-dbf"; + case ".mdb": + return "application/msaccess"; + case ".pdf": + return "application/pdf"; + case ".ppt": + case ".pptx": + return "application/x-ppt"; + case ".doc": + case ".docx": + return "application/msword"; + case ".xls": + case ".xlsx": + return "application/vnd.ms-excel"; + case ".dgn": + return "application/x-dgn"; + case ".dwg": + return "application/x-dwg"; + case ".ext": + return "application/x-msdownload"; + // 榛樿 + default: + return "application/octet-stream"; + } + } + + /** + * 瀛楄妭鍗曚綅鎹㈢畻 + */ + public static String formatByte(long byteNumber) { + double kbNumber = byteNumber / D1024; + if (kbNumber < D1024) { + return new DecimalFormat("#.##KB").format(kbNumber); + } + double mbNumber = kbNumber / D1024; + if (mbNumber < D1024) { + return new DecimalFormat("#.##MB").format(mbNumber); + } + double gbNumber = mbNumber / D1024; + if (gbNumber < D1024) { + return new DecimalFormat("#.##GB").format(gbNumber); + } + double tbNumber = gbNumber / D1024; + + return new DecimalFormat("#.##TB").format(tbNumber); + } + + /** + * 鑾峰彇骞虫柟绫� + */ + public static String getSquareMeter(double num) { + if (num < I1000000) { + return new DecimalFormat("#.##骞虫柟绫�").format(num); + } + + double knum = num / I1000000; + + return new DecimalFormat("#.##骞虫柟鍗冪背").format(knum); + } + + /** + * byte杞琈B + */ + public static double sizeToMb(long size) { + if (size < D1050) { + return 0.001; + } + + String str = String.format("%.3f", size / D1024 / D1024); + + return Double.parseDouble(str); + } + + /** + * 3.鑾峰彇鏂囦欢MD5鐮侊紙JDK锛� + */ + public static String getMd5ByJdk(String filePath) throws IOException { + FileInputStream fileStream = new FileInputStream(filePath); + String md5 = DigestUtils.md5Hex(fileStream); + fileStream.close(); + + return md5; + } + + /** + * 2.鑾峰彇蹇�� MD5 鐮� + */ + public static String getFastMd5(String filePath) throws IOException { + String hash = MD5.asHex(MD5.getHash(new File(filePath))); + + MD5 md5 = new MD5(); + md5.Update(hash, null); + + return md5.asHex(); + } + + /** + * 鍒犻櫎鏂囦欢澶� + * + * @param dir 鏂囦欢澶� + */ + public static void deleteDir(String dir) { + File file = new File(dir); + + deleteFiles(file); + } + + /** + * 绾ц仈鍒犻櫎鏂囦欢 + * + * @param file 鏂囦欢 + */ + public static void deleteFiles(File file) { + if (null == file || !file.exists()) { + return; + } + + if (file.isDirectory()) { + File[] files = file.listFiles(); + if (null != files && files.length > 0) { + for (File f : files) { + if (f.isDirectory()) { + deleteFiles(f); + } else { + f.delete(); + } + } + } + } + + file.delete(); + } + + /** + * 鑾峰彇鐩稿璺緞 + * + * @param file 鏂囦欢 + * @return 鐩稿璺緞 + */ + public static String getRelativePath(String file) { + if (StringHelper.isEmpty(file)) { + return null; + } + + int idx = file.lastIndexOf(File.separator); + int start = file.lastIndexOf(File.separator, idx - 1); + + return file.substring(start + 1); + } + + /** + * 鑾峰彇璺緞 + * + * @param file 鏂囦欢 + * @return 鏂囦欢璺緞 + */ + public static String getPath(String file) { + if (StringHelper.isEmpty(file)) { + return null; + } + + int end = file.lastIndexOf(File.separator); + + return file.substring(0, end); + } + + /** + * 1.鑾峰彇鏂囦欢鐨凪D5 + */ + @SuppressWarnings("unused") + public static String getFileMd5(String filePath) { + FileInputStream fis = null; + try { + MessageDigest md = MessageDigest.getInstance("MD5"); + + fis = new FileInputStream(new File(filePath)); + FileChannel fChannel = fis.getChannel(); + ByteBuffer buffer = ByteBuffer.allocateDirect(1024 * 1024); + + while (fChannel.read(buffer) != -1) { + buffer.flip(); + md.update(buffer); + buffer.compact(); + } + byte[] b = md.digest(); + + return byteToHexString(b); + } catch (Exception ex) { + ex.printStackTrace(); + return null; + } finally { + try { + if (null != fis) { + fis.close(); + } + } catch (IOException ex) { + ex.printStackTrace(); + } + } + } + + /** + * 瀛楄妭鐮佽浆16杩涘埗 + */ + public static String byteToHexString(byte[] tmp) { + // 姣忎釜瀛楄妭鐢� 16 杩涘埗琛ㄧず鐨勮瘽锛屼娇鐢ㄤ袱涓瓧绗︼紝 + char[] str = new char[16 * 2]; + + // 鎵�浠ヨ〃绀烘垚 16 杩涘埗闇�瑕� 32 涓瓧绗︼紝琛ㄧず杞崲缁撴灉涓搴旂殑瀛楃浣嶇疆 + int k = 0; + // 浠庣涓�涓瓧鑺傚紑濮嬶紝瀵� MD5 鐨勬瘡涓�涓瓧鑺� + for (int i = 0; i < I16; i++) { + // 杞崲鎴� 16 杩涘埗瀛楃鐨勮浆鎹� + byte byte0 = tmp[i]; + // 鍙栧瓧鑺備腑楂� 4 浣嶇殑鏁板瓧杞崲 + str[k++] = HEX_DIGITS[byte0 >>> 4 & 0xf]; + // >>> 涓洪�昏緫鍙崇Щ锛屽皢绗﹀彿浣嶄竴璧峰彸绉伙紝 鍙栧瓧鑺備腑浣� 4 浣嶇殑鏁板瓧杞崲 + str[k++] = HEX_DIGITS[byte0 & 0xf]; + } + // 鎹㈠悗鐨勭粨鏋滆浆鎹负瀛楃涓� + return new String(str); + } + + /** + * 鑾峰彇瀛楃涓茬殑MD5鐮� + */ + public static String getStringMd5(String text) { + StringBuilder builder = new StringBuilder(); + try { + MessageDigest md5 = MessageDigest.getInstance("MD5"); + + byte[] bytes = md5.digest(text.getBytes(StandardCharsets.UTF_8)); + for (byte aByte : bytes) { + builder.append(Integer.toHexString((0x000000FF & aByte) | 0xFFFFFF00).substring(6)); + } + } catch (Exception ex) { + log.error(ex.getMessage(), ex); + } + + return builder.toString(); + } + + /** + * 鏍规嵁璺緞鑾峰彇鏂囦欢 + */ + public static void getFilesByPath(List<String> list, String path) { + File file = new File(path); + if (file.isDirectory()) { + File[] files = file.listFiles(); + if (null == files) { + return; + } + + for (File f : files) { + if (f.isDirectory()) { + getFilesByPath(list, f.getPath()); + } else { + list.add(f.getPath()); + } + } + } else { + list.add(file.getPath()); + } + } + + /** + * 澶嶅埗鏂囦欢 + * + * @param src 婧愭枃浠� + * @param dest 鐩綍鏂囦欢 + */ + public static void copyFile(File src, File dest) throws IOException { + InputStream is = null; + OutputStream os = null; + try { + is = new FileInputStream(src); + os = new FileOutputStream(dest); + + byte[] buffer = new byte[1024]; + + int length; + while ((length = is.read(buffer)) > 0) { + os.write(buffer, 0, length); + } + } finally { + os.close(); + is.close(); + } + } +} -- Gitblit v1.9.3