重庆网站设计公司排行,最好茶叶网站建设,兰州seo外包公司,站长素材网站官网yml文件配置是否可以上传及上传附件大小 servlet:multipart:# 允许文件上传enabled: true# 单个文件大小max-file-size: 20MB# 设置总上传的文件大小max-request-size: 50MB
/*** param files* param request* Description 上传文件* Throws* Return java.util.List* Date 202…yml文件配置是否可以上传及上传附件大小 servlet:multipart:# 允许文件上传enabled: true# 单个文件大小max-file-size: 20MB# 设置总上传的文件大小max-request-size: 50MB
/*** param files* param request* Description 上传文件* Throws* Return java.util.List* Date 2023-08-02 12:11:02* Author WangKun*/PostMapping(/upload)public ListJSONObject upload(RequestParam(uploadFiles) MultipartFile[] files, HttpServletRequest request) {ListJSONObject list new ArrayList();for (MultipartFile file : files) { //循环保存文件JSONObject result new JSONObject();String msg ;//判断上传文件格式String fileType file.getContentType();// 要上传的目标文件存放的绝对路径String path ClassUtils.getDefaultClassLoader().getResource().getPath() imags;//文件名String fileOldName file.getOriginalFilename();if (StringUtils.isNotBlank(fileOldName) StringUtils.isNotEmpty(fileOldName) StringUtils.isNotBlank(fileType) StringUtils.isNotEmpty(fileType)) {//获取文件后缀名String suffixName fileOldName.substring(fileOldName.lastIndexOf(.));//重新生成文件名String fileNewName UUID.randomUUID() suffixName;// 上传if (FileUtils.upload(file, path, fileNewName)) {// 保存数据库信息String id addAnnex(fileNewName, fileOldName, path, fileType, file.getSize());if (StringUtils.isNotBlank(id) StringUtils.isNotEmpty(id)) {result.put(fileName, fileNewName);result.put(id, id);msg 文件上传成功;}} else {msg 文件上传失败;}}else{msg 文件名或文件类型为空;}result.put(msg, msg);list.add(result);}return list;}
文件上传到了\target\classes\imags中 下载 /*** param id* param response* Description 文件下载* Throws* Return java.util.Listcom.alibaba.fastjson2.JSONObject* Date 2023-08-02 13:24:41* Author WangKun*/GetMapping(/download)public void download(RequestParam(id) String id, HttpServletRequest request, HttpServletResponse response) {Annex annex annexService.selectAnnex(id);String fileName annex.getFileNewName();String charsetCode String.valueOf(StandardCharsets.UTF_8);try {File file new File(annex.getFilePath() File.separator fileName);//中文乱码解决String type request.getHeader(User-Agent).toLowerCase();// 字符编码格式if (type.indexOf(firefox) 0 || type.indexOf(chrome) 0) {//谷歌或火狐fileName new String(fileName.getBytes(charsetCode), iso8859-1);} else {//IEfileName URLEncoder.encode(fileName, charsetCode);}// 设置响应的头部信息response.setHeader(content-disposition, attachment;filename fileName);// 设置响应内容的类型response.setContentType(FileUtils.fileContentType(fileName) ; charset charsetCode);// 设置响应内容的长度response.setContentLength((int) file.length());// 输出FileUtils.outStream(Files.newInputStream(file.toPath()), response.getOutputStream());} catch (Exception e) {log.error(文件下载异常{}, e.getMessage());}} 文件工具类
/*** Description 文件上传工具* Author WangKun* Date 2023/8/2 10:28* Version*/
Slf4j
public class FileUtils {/*** param file* param path* param fileName* Description 保存文件* Throws* Return boolean* Date 2023-08-02 12:10:39* Author WangKun*/public static boolean upload(MultipartFile file, String path, String fileName) {String realPath path \\ fileName;File dest new File(realPath);//判断文件父目录是否存在if (!dest.getParentFile().exists()) {dest.getParentFile().mkdir();}try {//保存文件file.transferTo(dest);return true;} catch (IllegalStateException | IOException e) {log.error(文件上传{} 异常, e.getMessage(),e);e.printStackTrace();return false;}}/*** param name* Description 设置响应头部信息* Throws* Return java.lang.String* Date 2023-08-02 13:39:15* Author WangKun*/public static String fileContentType(String name) {String result ;String fileType name.toLowerCase();if (fileType.endsWith(.png)) {result image/png;} else if (fileType.endsWith(.gif)) {result image/gif;} else if (fileType.endsWith(.jpg) || fileType.endsWith(.jpeg)) {result image/jpeg;} else if (fileType.endsWith(.svg)) {result image/svgxml;} else if (fileType.endsWith(.doc)) {result application/msword;} else if (fileType.endsWith(.xls)) {result application/x-excel;} else if (fileType.endsWith(.zip)) {result application/zip;} else if (fileType.endsWith(.pdf)) {result application/pdf;} else if (fileType.endsWith(.mpeg)) { //MP3result audio/mpeg;} else if (fileType.endsWith(.mp4)) {result video/mp4;} else if (fileType.endsWith(.plain)) {result text/plain;} else if (fileType.endsWith(.html)) {result text/html;} else if (fileType.endsWith(.json)) {result application/json;} else{result application/octet-stream;}return result;}/*** param is* param os* Description 文件下载输出* Throws* Return void* Date 2023-08-02 13:40:47* Author WangKun*/public static void outStream(InputStream is, OutputStream os) {try {byte[] buffer new byte[10240];int length -1;while ((length is.read(buffer)) ! -1) {os.write(buffer, 0, length);os.flush();}} catch (Exception e) {log.error(文件下载{} 异常, e.getMessage(),e);} finally {try {os.close();is.close();} catch (IOException e) {log.error(关闭流{} 异常, e.getMessage(),e);e.printStackTrace();}}}}
