package com.fdkanfang.common.util; import lombok.extern.log4j.Log4j2; import org.springframework.util.ResourceUtils; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.net.URLDecoder; import java.net.URLEncoder; import java.nio.charset.Charset; import java.text.SimpleDateFormat; import java.util.Base64; import java.util.Date; import java.util.Enumeration; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; /** * Created by Owen on 2019/10/25 0025 14:20 */ @Log4j2 public class FileUtils { /** * web 文件下载 * @param response * @param path 源文件路径 * @param path 源文件名 * @return * @throws Exception */ public static void fileDownload(HttpServletResponse response, String path) throws Exception { String fileName = path.substring(path.lastIndexOf(File.separator)+1); // 当文件名不是英文名的时候，最好使用url解码器去编码一下， fileName= URLEncoder.encode(fileName,"UTF-8"); // 获取response的输出流，用来输出文件 // ServletOutputStream out = response.getOutputStream(); OutputStream out = response.getOutputStream(); // 将响应的类型 response.setContentType("APPLICATION/OCTET-STREAM"); response.setHeader("Content-Disposition","attachment; filename="+fileName); // 以输入流的形式读取文件 // log.info("zipPath: " + path); FileInputStream in = new FileInputStream(path); //可以自己 指定缓冲区的大小 byte[] buffer = new byte[1024]; int len = 0; while ((len = in.read(buffer)) != -1) { out.write(buffer, 0, len); out.flush(); } //关闭输入输出流 out.close(); in.close(); } /** * 获取类路径 */ public static String getResource(){ String path = ""; try { path = ResourceUtils.getURL("classpath:").getPath(); path = URLDecoder.decode(path,"utf-8"); log.info("classpath path :"+path); } catch (Exception e) { log.error(" classpath Error" + e.getMessage(), e); } return path; } /** * 创建文件夹 * destDirName：文件夹名称 */ public static void createDir(String destDirName) { File dir = new File(destDirName); // 创建目录 if (!dir.exists()) { dir.mkdirs(); } } /** * 大文件读写 * * 1.先将文件中的内容读入到缓冲输入流中 * 2.将输入流中的数据通过缓冲输出流写入到目标文件中 * 3.关闭输入流和输出流 * * in: 输入流 * path： 保持位置 */ public static int downloanAndGetResolutionRate(InputStream in, String fileFullPath, boolean needCheckResolutin) throws IOException { // 输入缓冲流 File file = new File(fileFullPath); if(file.exists()){ deleteFile(fileFullPath); file = new File(fileFullPath); } BufferedInputStream inputBuff = new BufferedInputStream(in); // 输出缓冲流 BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream(file)); int len = 0; byte[] buffer = new byte[1024]; while ((len = inputBuff.read(buffer)) != -1) { stream.write(buffer, 0, len); } stream.flush(); stream.close(); inputBuff.close(); int totalResolutinRate = -1; if(needCheckResolutin){ SimpleImageInfo simpleImageInfo = new SimpleImageInfo(file); if(null != simpleImageInfo){ totalResolutinRate = simpleImageInfo.getWidth()*simpleImageInfo.getHeight(); } } return totalResolutinRate; } /** * 删除单个文件 * * @param fileName 要删除的文件的文件名 * @return 单个文件删除成功返回true，否则返回false */ public static boolean deleteFile(String fileName) { File file = new File(fileName); if (file.exists() && file.isFile()) { if (file.delete()) { return true; } else { return false; } } else { return false; } } /** * * @param content base64内容 * @param path 输出文件路径，需要后缀名 * @return */ public static boolean base64ToFileWriter(String content, String path) { if (content == null) { return false; } try { byte[] b = Base64.getDecoder().decode(content); // processing data for (int i = 0; i < b.length; ++i) { if (b[i] < 0) { b[i] += 256; } } OutputStream out = new FileOutputStream(path); out.write(b); out.flush(); out.close(); return true; } catch (Exception e) { return false; } } /** * 读取文件方法 * @param Path 文件路径 * @return 返回内容 */ public static String readFile(String Path){ BufferedReader reader = null; String laststr = ""; try{ FileInputStream fileInputStream = new FileInputStream(Path); InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8"); reader = new BufferedReader(inputStreamReader); String tempString = null; while((tempString = reader.readLine()) != null){ laststr += tempString; } reader.close(); }catch(IOException e){ e.printStackTrace(); }finally{ if(reader != null){ try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } return laststr; } /** * 生成文件 * @param content 内容 * @param path 生成路径 * @throws IOException */ public static void fileWriter(String content, String path) throws IOException { FileWriter writer = new FileWriter(path); writer.write(content); writer.flush(); writer.close(); } public static void writeFile(String filePath,String str) throws IOException { File fout = new File(filePath); if(!fout.getParentFile().exists()){ fout.getParentFile().mkdirs(); } if(!fout.exists()){ fout.createNewFile(); } FileOutputStream fos = new FileOutputStream(fout); BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fos)); bw.write(str); bw.close(); } // 获取时间戳 public static String timeMillisStr() { SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd"); String format = df.format(new Date()); long timeMillis = System.currentTimeMillis(); return format + "_" + timeMillis + "_"; } //返回年月日时分秒 public static String dateStr() { SimpleDateFormat df = new SimpleDateFormat("yyyyMMddhhmmss"); String format = df.format(new Date()); return format + "_"; } /** * 删除指定文件夹下所有文件 * @param path 文件夹完整绝对路径 * @return */ public static boolean delAllFile(String path) { boolean flag = false; File file = new File(path); if (!file.exists()) { return flag; } if (!file.isDirectory()) { return flag; } String[] tempList = file.list(); File temp = null; for (int i = 0; i < tempList.length; i++) { if (path.endsWith(File.separator)) { temp = new File(path + tempList[i]); } else { temp = new File(path + File.separator + tempList[i]); } if (temp.isFile()) { temp.delete(); } if (temp.isDirectory()) { delAllFile(path + "/" + tempList[i]);//先删除文件夹里面的文件 delFolder(path + "/" + tempList[i]);//再删除空文件夹 // delAllFile(path + tempList[i]);//先删除文件夹里面的文件 // delFolder(path + tempList[i]);//再删除空文件夹 flag = true; } } return flag; } /** * 删除文件夹或删除文件 * @param folderPath 文件夹完整绝对路径 */ public static void delFolder(String folderPath) { try { // File file = new File(folderPath); // if (file.exists()){ //删除完里面所有内容 delAllFile(folderPath); String filePath = folderPath; filePath = filePath.toString(); File myFilePath = new File(filePath); //删除空文件夹 myFilePath.delete(); // } } catch (Exception e) { e.printStackTrace(); } } /** * zip解压 * @param zipFileName zip源文件 * @param destDirPath 解压后的目标文件夹 * @throws RuntimeException 解压失败会抛出运行时异常 */ public static boolean unzip(String zipFileName, String destDirPath) throws RuntimeException { File srcFile = new File(zipFileName); long start = System.currentTimeMillis(); // 判断源文件是否存在 if (!srcFile.exists()) { throw new RuntimeException(srcFile.getPath() + "所指文件不存在"); } // 开始解压 ZipFile zipFile = null; try { zipFile = new ZipFile(srcFile, Charset.forName("gbk")); Enumeration entries = zipFile.entries(); while (entries.hasMoreElements()) { ZipEntry entry = (ZipEntry) entries.nextElement(); // log.info("解压: " + entry.getName()); // 如果是文件夹，就创建个文件夹 if (entry.isDirectory()) { String dirPath = destDirPath + "/" + entry.getName(); File dir = new File(dirPath); dir.mkdirs(); } else { // 如果是文件，就先创建一个文件，然后用io流把内容copy过去 File targetFile = new File(destDirPath + "/" + entry.getName()); // 保证这个文件的父文件夹必须要存在 if(!targetFile.getParentFile().exists()){ targetFile.getParentFile().mkdirs(); } targetFile.createNewFile(); // 将压缩文件内容写入到这个文件中 InputStream is = zipFile.getInputStream(entry); FileOutputStream fos = new FileOutputStream(targetFile); int len; byte[] buf = new byte[1024]; while ((len = is.read(buf)) != -1) { fos.write(buf, 0, len); } // 关流顺序，先打开的后关闭 fos.close(); is.close(); } } long end = System.currentTimeMillis(); log.info("解压完成，耗时：" + (end - start) +" ms"); } catch (Exception e) { throw new RuntimeException("unzip error from ZipUtils", e); } finally { if(zipFile != null){ try { zipFile.close(); } catch (IOException e) { e.printStackTrace(); } } } return true; } /** * 读取json 文件, Linux版 */ public static String readJsonLinux(String path){ String param = FileUtils.readFile(path); return param; } public static void main(String[] args) { // unzip("F:\\test\\a1_shp2.zip", "F:\\test\\"); // 这个是可以的，没有目录结构 // unzip("F:\\test\\cesium\\clip.zip", "F:\\test\\cesium\\"); // 这个有目录的，会失败 // File file = new File("F:\\test\\clip.zip"); unzip("F:\\test\\clip.zip", "F:\\test\\"); } }