¶Ô±ÈÐÂÎļþ |
| | |
| | | package com.lf.server.helper; |
| | | |
| | | import com.lf.server.entity.data.MetaFileEntity; |
| | | import org.apache.commons.codec.digest.DigestUtils; |
| | | import org.apache.commons.logging.Log; |
| | | import org.apache.commons.logging.LogFactory; |
| | | |
| | | import java.io.File; |
| | | import java.io.FileInputStream; |
| | | import java.io.IOException; |
| | | import java.text.DecimalFormat; |
| | | import java.util.List; |
| | | |
| | | /** |
| | | * æä»¶å¸®å©ç±» |
| | | * @author WWW |
| | | */ |
| | | public class FileHelper { |
| | | private final static String POINT = "."; |
| | | |
| | | public static final double D1024 = 1024.0; |
| | | |
| | | public static final double D1050 = 1050.0; |
| | | |
| | | private final static Log log = LogFactory.getLog(FileHelper.class); |
| | | |
| | | /** |
| | | * è·åæä»¶å |
| | | * |
| | | * @param file |
| | | * @return |
| | | */ |
| | | public static String getFileName(String file) { |
| | | int idx = file.lastIndexOf(File.separator); |
| | | if (idx > -1) { |
| | | return file.substring(idx + 1); |
| | | } |
| | | |
| | | return ""; |
| | | } |
| | | |
| | | /** |
| | | * è·åæä»¶æ©å±å |
| | | */ |
| | | public static String getExtension(File file) { |
| | | if (file == null) { |
| | | return null; |
| | | } |
| | | |
| | | String fileName = file.getName().toLowerCase(); |
| | | |
| | | int idx = fileName.lastIndexOf(POINT); |
| | | if (idx == -1) { |
| | | return ""; |
| | | } |
| | | |
| | | return fileName.substring(idx); |
| | | } |
| | | |
| | | /** |
| | | * è·åæä»¶æ©å±å |
| | | */ |
| | | 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(); |
| | | } |
| | | |
| | | /** |
| | | * è·åå¤ç¨éäºèç½é®ä»¶æ©å±ç±»å |
| | | * |
| | | * @param ext æä»¶æ©å±å |
| | | * @return |
| | | */ |
| | | public static String getMime(String ext) { |
| | | switch (ext) { |
| | | // å¾ç |
| | | 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"; |
| | | // é³/è§é¢ |
| | | 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"; |
| | | // ç½é¡µ |
| | | 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"; |
| | | // æä»¶ |
| | | 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"; |
| | | // é»è®¤ |
| | | default: |
| | | return "application/octet-stream"; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * åèå使¢ç® |
| | | */ |
| | | 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); |
| | | } |
| | | |
| | | /** |
| | | * byte转MB |
| | | */ |
| | | public static double sizeToMb(long size) { |
| | | if (size < D1050) { |
| | | return 0.001; |
| | | } |
| | | |
| | | String str = String.format("%.3f", size / D1024 / D1024); |
| | | |
| | | return Double.parseDouble(str); |
| | | } |
| | | |
| | | /** |
| | | * è·åæä»¶ MD5 ç |
| | | */ |
| | | public static String getFileMd5(String filePath) throws IOException { |
| | | FileInputStream fileStream = new FileInputStream(filePath); |
| | | String md5 = DigestUtils.md5Hex(fileStream); |
| | | fileStream.close(); |
| | | |
| | | return md5; |
| | | } |
| | | |
| | | /** |
| | | * å 餿件 |
| | | */ |
| | | public static void deleteFiles(List<MetaFileEntity> list) { |
| | | try { |
| | | for (MetaFileEntity mf : list) { |
| | | File f = new File(mf.getPath()); |
| | | if (f.exists()) { |
| | | f.delete(); |
| | | } |
| | | } |
| | | } catch (Exception ex) { |
| | | log.error(ex.getMessage(), ex); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * å 餿件夹 |
| | | * |
| | | * @param dir æä»¶å¤¹ |
| | | */ |
| | | public static void deleteDir(String dir) { |
| | | File file = new File(dir); |
| | | |
| | | deleteFiles(file); |
| | | } |
| | | |
| | | /** |
| | | * 级èå 餿件 |
| | | * |
| | | * @param file æä»¶ |
| | | */ |
| | | public static void deleteFiles(File file) { |
| | | if (file == null || !file.exists()) { |
| | | return; |
| | | } |
| | | |
| | | if (file.isDirectory()) { |
| | | File[] files = file.listFiles(); |
| | | for (File f : files) { |
| | | if (f.isDirectory()) { |
| | | deleteFiles(f); |
| | | } else { |
| | | f.delete(); |
| | | } |
| | | } |
| | | } |
| | | |
| | | file.delete(); |
| | | } |
| | | |
| | | /** |
| | | * è·åç¸å¯¹è·¯å¾ |
| | | * |
| | | * @param file æä»¶ |
| | | * @return ç¸å¯¹è·¯å¾ |
| | | */ |
| | | 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); |
| | | } |
| | | |
| | | /** |
| | | * è·åè·¯å¾ |
| | | * |
| | | * @param file æä»¶ |
| | | * @return æä»¶è·¯å¾ |
| | | */ |
| | | public static String getPath(String file) { |
| | | if (StringHelper.isEmpty(file)) { |
| | | return null; |
| | | } |
| | | |
| | | int end = file.lastIndexOf(File.separator); |
| | | |
| | | return file.substring(0, end); |
| | | } |
| | | } |