package com.mm.util; import lombok.extern.slf4j.Slf4j; import org.apache.commons.lang3.StringUtils; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; import org.springframework.web.multipart.MultipartFile; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.math.BigDecimal; import java.nio.channels.FileChannel; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; @Slf4j @Component public class FileUtil { public static String changeFileFormatKb(String flow) { BigDecimal flows = new BigDecimal(flow); if (flows.compareTo(new BigDecimal(0)) > 0 && flows.compareTo(new BigDecimal(1024)) < 0) {//小于1M return flows.toString() + "B"; } else if(flows.compareTo(new BigDecimal(1024)) >= 0){ BigDecimal result = flows.divide(new BigDecimal(1024),2,BigDecimal.ROUND_HALF_UP); return result.toString() + "KB"; } else { return "0"; } } public static void copyFileBakZip(File file, File target) { target = new File(target, file.getName()); if (!target.exists()) { target.mkdirs(); } if (file.isDirectory()) { File[] files = file.listFiles(); for (File f : files) { if (f.isDirectory()) { copyFileBakZip(f, target); } else { copyFileDeleteZip(f, target); } } } else { copyFileDeleteZip(file, target); } } /** * * @param lastFile 文件路径 需要 * @param filePath 新路径 * @return */ public static boolean copyFile(String lastFile,String filePath,String bakFilePath) { //文件迁移删除 String absolutePathSend = lastFile; File abFile = new File(absolutePathSend); if (abFile.getParentFile().exists()) { /*File bak = new File(bakFilePath); if (!bak.getParentFile().exists()){ //文件夹不存在 生成 bak.getParentFile().mkdirs(); }*/ deleteFile(filePath); } if (!abFile.getParentFile().exists()){ //文件夹不存在 生成 return false; } FileChannel in = null; FileChannel out = null; try{ in = new FileInputStream(absolutePathSend).getChannel(); File file = new File(filePath); if (!file.getParentFile().exists()){ //文件夹不存在 生成 file.getParentFile().mkdirs(); } out = new FileOutputStream(filePath, true).getChannel(); out.transferFrom(in, 0, in.size()); in.close(); out.close(); return true; } catch (IOException e) { e.printStackTrace(); try { if (in != null) { in.close(); } if (out != null) { out.close(); } } catch (IOException e1) { e1.printStackTrace(); } return false; } finally { try { if (in != null) { in.close(); } if (out != null) { out.close(); } } catch (IOException e) { e.printStackTrace(); } } } public static boolean fileRecDelete(String lastFile) { String absolutePathSend = lastFile; Path path = Paths.get(lastFile); try { System.gc(); Files.delete(path); } catch (IOException e) { e.printStackTrace(); } try{ File file = new File(lastFile); file.delete(); return true; } catch (Exception e) { e.printStackTrace(); return false; } } public static Boolean deleteFile(File file) { //判断文件不为null或文件目录存在 if (file == null || !file.exists()) { System.out.println("文件删除失败,请检查文件是否存在以及文件路径是否正确"); return false; } //获取目录下子文件 File[] files = file.listFiles(); //遍历该目录下的文件对象 if(files != null && files.length>0) { for (File f : files) { //判断子目录是否存在子目录,如果是文件则删除 if (f.isDirectory()) { //递归删除目录下的文件 deleteFile(f); } else { //文件删除 f.delete(); //打印文件名 System.out.println("文件名：" + f.getName()); } } } //文件夹删除 file.delete(); System.out.println("目录名：" + file.getName()); return true; } /** * 删除文件 * * @param filePath * @return */ public static boolean deleteFile(String filePath) { boolean flag = false; File file = new File(filePath); if (!file.exists()) { return flag; } boolean b = file.delete(); if (!b) { try { System.gc(); Path path = Paths.get(filePath); Files.deleteIfExists(path); } catch (IOException e) { e.printStackTrace(); } } return true; } public static void compressFolder(File folder, String zipFilePath) throws IOException { ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFilePath)); compressFolder(folder, folder.getName(), zipOut); zipOut.close(); } private static void compressFolder(File folder, String parentFolder, ZipOutputStream zipOut) throws IOException { if (folder.isFile()) { String filePath = folder.getPath(); String entryPath = filePath.substring(parentFolder.length() + 1); ZipEntry zipEntry = new ZipEntry(entryPath); zipOut.putNextEntry(zipEntry); FileInputStream fileIn = new FileInputStream(filePath); byte[] buffer = new byte[1024]; int bytesRead; while ((bytesRead = fileIn.read(buffer)) != -1) { zipOut.write(buffer, 0, bytesRead); } fileIn.close(); zipOut.closeEntry(); } else { for (File file : folder.listFiles()) { compressFolder(file, parentFolder, zipOut); } } } public static void copyFileDeleteZip(File file, File directory) { try { FileInputStream input = new FileInputStream(file); FileOutputStream output = new FileOutputStream(new File(directory, file.getName())); byte[] buff = new byte[8192]; int len = -1; while ((len = input.read(buff)) > -1) { output.write(buff); } input.close(); output.close(); } catch (Exception e) { } } /** * 上传文件工具类 * @param multipartFile * @param path * @param fileNewName 新的文件名 * @return */ public static boolean uploadFile(MultipartFile multipartFile, String path, String fileNewName) { File targetFile = new File(path, fileNewName); if(!targetFile.getParentFile().exists()){ targetFile.getParentFile().mkdirs(); } try { multipartFile.transferTo(targetFile); return true; } catch (Exception e) { log.error(e.getMessage(), e.getStackTrace()); return false; } } /** /** * 获取文件后缀 无后缀文件返回NULL * @param fileName * @return */ public static String getFileSuffix(String fileName) { if (fileName.contains(".")) { String suffix = fileName.substring(fileName.lastIndexOf('.') + 1); return suffix; }else { return null; } } /** * 获取文件名 不带后缀和点号 * @param fileName * @return */ public static String getFilenameNonSuffix(String fileName) { if (fileName.contains(".")) { String filename = fileName.substring(0, fileName.lastIndexOf('.')); return filename; }else { return fileName; } } }