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package com.cuit.util; import java.io.File; import java.io.IOException; import java.sql.Timestamp; import java.text.DecimalFormat; import java.util.Arrays; import java.util.Iterator; import java.util.Random; import javax.servlet.http.HttpServletRequest; import org.springframework.web.multipart.MultipartFile; import com.cuit.domain.FileEntity; public class FileUploadTool { TransfMediaTool transfMediaTool = new TransfMediaTool(); // 文件最大500M private static long upload_maxsize = 800 * 1024 * 1024; // 文件允许格式 private static String[] allowFiles = { ".rar", ".doc", ".docx", ".zip", ".pdf", ".txt", ".swf", ".xlsx", ".gif", ".png", ".jpg", ".jpeg", ".bmp", ".xls", ".mp4", ".flv", ".ppt", ".avi", ".mpg", ".wmv", ".3gp", ".mov", ".asf", ".asx", ".vob", ".wmv9", ".rm", ".rmvb" }; // 允许转码的视频格式（ffmpeg） private static String[] allowFLV = { ".avi", ".mpg", ".wmv", ".3gp", ".mov", ".asf", ".asx", ".vob" }; // 允许的视频转码格式(mencoder) private static String[] allowAVI = { ".wmv9", ".rm", ".rmvb" }; public FileEntity createFile(MultipartFile multipartFile, HttpServletRequest request) { FileEntity entity = new FileEntity(); boolean bflag = false; String fileName = multipartFile.getOriginalFilename().toString(); // 判断文件不为空 if (multipartFile.getSize() != 0 && !multipartFile.isEmpty()) { bflag = true; // 判断文件大小 if (multipartFile.getSize() <= upload_maxsize) { bflag = true; // 文件类型判断 if (this.checkFileType(fileName)) { bflag = true; } else { bflag = false; System.out.println("文件类型不允许"); } } else { bflag = false; System.out.println("文件大小超范围"); } } else { bflag = false; System.out.println("文件为空"); } if (bflag) { String logoPathDir = "/video/"; String logoRealPathDir = request.getServletContext().getRealPath(logoPathDir); // 上传到本地磁盘 // String logoRealPathDir = "E:/upload"; File logoSaveFile = new File(logoRealPathDir); if (!logoSaveFile.exists()) { logoSaveFile.mkdirs(); } String name = fileName.substring(0, fileName.lastIndexOf(".")); System.out.println("文件名称：" + name); // 新的文件名 String newFileName = this.getName(fileName); // 文件扩展名 String fileEnd = this.getFileExt(fileName); // 绝对路径 String fileNamedirs = logoRealPathDir + File.separator + newFileName + fileEnd; System.out.println("保存的绝对路径：" + fileNamedirs); File filedirs = new File(fileNamedirs); // 转入文件 try { multipartFile.transferTo(filedirs); } catch (IllegalStateException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } // 相对路径 entity.setType(fileEnd); String fileDir = logoPathDir + newFileName + fileEnd; StringBuilder builder = new StringBuilder(fileDir); String finalFileDir = builder.substring(1); // size存储为String String size = this.getSize(filedirs); // 源文件保存路径 String aviPath = filedirs.getAbsolutePath(); // 转码Avi boolean flag = false; if (this.checkAVIType(fileEnd)) { // 设置转换为AVI格式后文件的保存路径 String codcAviPath = logoRealPathDir + File.separator + newFileName + ".avi"; // 获取配置的转换工具（mencoder.exe）的存放路径 String mencoderPath = request.getServletContext().getRealPath("/tools/mencoder.exe"); aviPath = transfMediaTool.processAVI(mencoderPath, filedirs.getAbsolutePath(), codcAviPath); fileEnd = this.getFileExt(codcAviPath); } if (aviPath != null) { // 转码Flv if (this.checkMediaType(fileEnd)) { try { // 设置转换为flv格式后文件的保存路径 String codcFilePath = logoRealPathDir + File.separator + newFileName + ".flv"; // 获取配置的转换工具（ffmpeg.exe）的存放路径 String ffmpegPath = request.getServletContext().getRealPath("/tools/ffmpeg.exe"); transfMediaTool.processFLV(ffmpegPath, aviPath, codcFilePath); fileDir = logoPathDir + newFileName + ".flv"; builder = new StringBuilder(fileDir); finalFileDir = builder.substring(1); } catch (Exception e) { e.printStackTrace(); } } entity.setSize(size); entity.setPath(finalFileDir); entity.setTitleOrig(name); entity.setTitleAlter(newFileName); Timestamp timestamp = new Timestamp(System.currentTimeMillis()); entity.setUploadTime(timestamp); return entity; } else { return null; } } else { return null; } } /** * 文件类型判断 * * @param fileName * @return */ private boolean checkFileType(String fileName) { Iterator<String> type = Arrays.asList(allowFiles).iterator(); while (type.hasNext()) { String ext = type.next(); if (fileName.toLowerCase().endsWith(ext)) { return true; } } return false; } /** * 视频类型判断(flv) * * @param fileName * @return */ private boolean checkMediaType(String fileEnd) { Iterator<String> type = Arrays.asList(allowFLV).iterator(); while (type.hasNext()) { String ext = type.next(); if (fileEnd.equals(ext)) { return true; } } return false; } /** * 视频类型判断(AVI) * * @param fileName * @return */ private boolean checkAVIType(String fileEnd) { Iterator<String> type = Arrays.asList(allowAVI).iterator(); while (type.hasNext()) { String ext = type.next(); if (fileEnd.equals(ext)) { return true; } } return false; } /** * 获取文件扩展名 * * @return string */ private String getFileExt(String fileName) { return fileName.substring(fileName.lastIndexOf(".")); } /** * 依据原始文件名生成新文件名 * * @return */ private String getName(String fileName) { Random random = new Random(); return "" + random.nextInt(10000) + System.currentTimeMillis(); } /** * 文件大小，返回kb.mb * * @return */ private String getSize(File file) { String size = ""; long fileLength = file.length(); DecimalFormat df = new DecimalFormat("#.00"); if (fileLength < 1024) { size = df.format((double) fileLength) + "BT"; } else if (fileLength < 1048576) { size = df.format((double) fileLength / 1024) + "KB"; } else if (fileLength < 1073741824) { size = df.format((double) fileLength / 1048576) + "MB"; } else { size = df.format((double) fileLength / 1073741824) + "GB"; } return size; } }