Java 导入zip，并进行解压

场景一：上传zip包，后台进行解压，提取里面的文件，进行上传。

    public static void inputStreamToFile(InputStream ins, File file) {try {OutputStream os = new FileOutputStream(file);int bytesRead = 0;byte[] buffer = new byte[8192];while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {os.write(buffer, 0, bytesRead);}os.flush();os.close();ins.close();} catch (Exception e) {e.printStackTrace();}}

    @ResponseBody@RequestMapping(value = "updPlScpjcjd", method = RequestMethod.POST)public ReturnT updPlScpjcjd(KtbgPage page, @RequestParam(value = "file", required = false) MultipartFile file, @AuthenticationPrincipal UserManagerEntity user, HttpServletRequest request, HttpServletResponse response) throws Exception {Map map = new HashMap();ReturnT re = new ReturnT(map);String webSocketUrl = "/updPlScpjcjd-" + page.getP_pycc();File zipFile = null;if (file.equals("") || file.getSize() <= 0) {file = null;} else {InputStream ins = null;try {ins = file.getInputStream();zipFile = new File(file.getOriginalFilename());inputStreamToFile(ins, zipFile);ZipFile zip = new ZipFile(zipFile, Charset.forName("GBK"));int ypxhrs = 0;for (Enumeration enumeration = zip.entries(); enumeration.hasMoreElements(); ) {ZipEntry entry = (ZipEntry) enumeration.nextElement();ypxhrs++;// 创建一个数值格式化对象NumberFormat numberFormat = NumberFormat.getInstance();// 设置精确到小数点后2位numberFormat.setMaximumFractionDigits(2);String result = numberFormat.format((float) ypxhrs / (float) zip.size() * 100);messagingTemplate.convertAndSendToUser(user.getId(), webSocketUrl, result); //用户id，路径，消息if (entry.isDirectory()) {continue;}//文件的String filename = entry.getName();System.out.println(filename);int lastIndex = filename.lastIndexOf(".");System.out.println(lastIndex);String xh = filename.substring(0, lastIndex);System.out.println(xh);//将zipEntry转成输入流InputStream inputStream = zip.getInputStream(entry);//将inputstream转换成mulipartFileMultipartFile multipartFile = new MockMultipartFile(filename, filename, "text/plain", inputStream);//文件名就是学号page.setP_xh(xh);//调用上传接口ktbgService.updPlScpjcjd(request, response, page, multipartFile, map);}} catch (IOException e) {e.printStackTrace();re.setCode(500);} finally {if (ins != null) {ins.close();}}}return re;}

场景二：上传zip，后台进行解压，提取zip包中“文件夹”以及该“文件夹”下的文件后，再进行压缩上传。

    public static void putNextEntry(InputStream inputStream,String name,ZipOutputStream zipOut) throws IOException {//读取相关的文件InputStream input = inputStream;//zipOut.putNextEntry(new ZipEntry(name));// 设置注释//zipOut.setComment("hello");int temp = 0;//读取相关的文件while((temp = input.read()) != -1){//写入输出流中zipOut.write(temp);}//关闭流input.close();}

    public static void inputStreamToFile(InputStream ins, File file) {try {OutputStream os = new FileOutputStream(file);int bytesRead = 0;byte[] buffer = new byte[8192];while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {os.write(buffer, 0, bytesRead);}os.flush();os.close();ins.close();} catch (Exception e) {e.printStackTrace();}}

    @ResponseBody@RequestMapping(value = "updateScPybByNkd", method = RequestMethod.POST)public ReturnT updateScPybByNkd(LwdbPage page, @RequestParam(value = "file", required = false) MultipartFile file, @AuthenticationPrincipal UserManagerEntity user, HttpServletRequest request, HttpServletResponse response) throws Exception {Map map = new HashMap();ReturnT re = new ReturnT(map);String webSocketUrl = "/updPlScpjcjd-" + page.getP_pycc();File zipFile = null;if (file.equals("") || file.getSize() <= 0) {file = null;} else {InputStream ins = null;try {ins = file.getInputStream();zipFile = new File(file.getOriginalFilename());inputStreamToFile(ins, zipFile);ZipFile zip = new ZipFile(zipFile, Charset.forName("GBK"));int ypxhrs = 0;for (Enumeration enumeration = zip.entries(); enumeration.hasMoreElements(); ) {ZipEntry entry = (ZipEntry) enumeration.nextElement();ypxhrs++;// 创建一个数值格式化对象NumberFormat numberFormat = NumberFormat.getInstance();// 设置精确到小数点后2位numberFormat.setMaximumFractionDigits(2);String result = numberFormat.format((float) ypxhrs / (float) zip.size() * 100);messagingTemplate.convertAndSendToUser(user.getId(), webSocketUrl, result); //用户id，路径，消息if (entry.isDirectory()) {String directoryName = entry.getName();//设置输出流ByteArrayOutputStream out = new ByteArrayOutputStream();ZipOutputStream zipOut = new ZipOutputStream(out);for (Enumeration enumeration2 = zip.entries(); enumeration2.hasMoreElements(); ) {ZipEntry entry2 = (ZipEntry) enumeration2.nextElement();String fileName = entry2.getName();if (!entry2.isDirectory() && fileName.contains(directoryName)) {//將文件添加到包中putNextEntry(zip.getInputStream(entry2),fileName,zipOut);}}zipOut.close();String fileName = directoryName.replaceAll("/","")+".zip";MultipartFile multipartFile = new MockMultipartFile( fileName, fileName, "text/plain", new ByteArrayInputStream(out.toByteArray()));//解析學號int lastIndex = directoryName.lastIndexOf("_");String xh = directoryName.substring(lastIndex+1, directoryName.length());//文件名就是学号page.setP_xh(xh.replaceAll("/",""));//调用上传接口lwdbService.updPyjlcjfjidByXh(request, response,multipartFile, page);continue;}}} catch (IOException e) {e.printStackTrace();re.setCode(500);} finally {if (ins != null) {ins.close();}}}return re;}

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Java 导入zip，并进行解压

场景一：上传zip包，后台进行解压，提取里面的文件，进行上传。

场景二：上传zip，后台进行解压，提取zip包中“文件夹”以及该“文件夹”下的文件后，再进行压缩上传。

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