These days inadvertently turn their old code to do a development in this note-taking
File Upload:
Front-end using file upload component layui
springboot frame background use
The front page code:
html:
<button type="button" class="layui-btn" id="test1"><i class="layui-icon"></i>上传图片</button>
js:
// Common Image Upload var uploadInst = upload.render ({ elem: '# test1' , URL: '/ the uploadFile / the uploadFile' , Data: { filetype: ". 1" } , size: 0 , before: function (obj) { / * // local file read-ahead example, does not support IE8 obj.preview (function (index, file, the Result) { $ ( '# demo1') attr ( 'src', the Result);. // picture link (base64) }); * / } , DONE: function (RES) { //If the upload has failed IF (res.code> 0 ) { return layer.msg ( 'failed to upload' ); } the else IF (res.code === 0) { // successfully uploaded zuo.department.image = res.fileid; zuo.department.imageurl = res.fileurl; } } , error: function () { // presentation failed state, and to achieve a retransmission var demoText = $ ( '# demoText' ); demoText.html ('<span style="color: #FF5722;">上传失败</span> <a class="layui-btn layui-btn-xs demo-reload">重试</a>'); demoText.find('.demo-reload').on('click', function(){ uploadInst.upload(); }); } });
Background java code:
Application.java added
/ ** * Configuration File Upload * @return * / @Bean public MultipartConfigElement multipartConfigElement () { MultipartConfigFactory Factory = new new MultipartConfigFactory (); // a maximum single file factory.setMaxFileSize ( "10240KB"); // KB, MB // / The total size of the data set uploads factory.setMaxRequestSize ( "102400KB" ); return factory.createMultipartConfig (); }
External constants:
/ ** * file upload address (pc) home folder (default) * / Private String Folder = "C: //" ; / ** * file upload address (pc) folder (default) * / Private String pcfile = "the Upload / pcfiles /" ; / ** * = 1 image filename filetype * / Private String Image = "Image" ; / ** * documentation = 2 filetype * / Private String = Office "Office" ; / ** * video 3 = filetype * / Private String Video = "Video" ; / ** * = 4 seed filetype * / Private String bt = "bt" ; / ** * 音乐 filetype=5 */ private String misic = "misic"; /** * 其他 filetype=6 */ private String other = "other";
Main methods:
/ ** * * Upload a single file (normal file upload) * js can be directly transferred to this method, but also can be a tool interface * synchronization method * @param File * @param file specified by fileurl memory address: there are with, if any, use the default * @ param filetype (1: picture 2: document 3: video, 4: seed 5: Music, 6: other) * @return * sUCCESS success / failure * msg prompt content * fileid file the above mentioned id * file specified by fileurl access to the file url * / @ RequestMapping ( "/ uploadFile" ) @ResponseBody public the synchronized the Map <String, Object>uploadFilex (a MultipartFile File, fileurl String, String filetype, the HttpServletRequest Request, the HttpServletResponse Response) { / ** * Method main block * / the Map <String, Object> = Result new new the HashMap <String, Object> (); the HttpSession the session = Request. the getSession (); the try { / ** * this person * / the User User = (the User) session.getAttribute ( "the USER" ); / ** * here path (customize) * / String filePath = "" ; / ** * picture access address * / URL String = "" ; / ** * not pass type (automatic determination) * / IF (filetype == null ) { the InputStream INPUT = file.getInputStream (); / ** * determines the type of file * / Integer T = FileTypeJudge .isFileType ( FileTypeJudge.getType (INPUT)); filetype = t.toString (); } / ** * stored in different folders of different file * / IF (fileurl == null || fileurl.equals ( "" )) { filePath=folder+pcfile; url = pcfile; if(filetype.equals("1")){//图片 filePath +=this.image; url +=this.image; }else if(filetype.equals("2")){//文档 filePath +=this.office; url +=this.office; }else if(filetype.equals("3")){//视频 filePath +=this.video; url +=this.video; }else if(filetype.equals("4")){//种子 filePath +=this.bt; url +=this.bt; }else if(filetype.equals("5")){//音乐 filePath +=this.misic; url +=this.misic; }else{//其他 + = filePath the this .OTHER; URL + = the this .OTHER; } } the else { filePath = fileurl; } / ** * Get the file path of the uploaded image * / File picFile = new new File (filePath); / ** * Analyzing file folder exists, if it does not exist create * / IF (! picFile.isDirectory ()) { picFile.mkdirs (); // mkdir to create a single-folder; mkdirs create multiple folders } / ** * Need to return the file name * / String OriginalFilename = null ; / ** * filename prefix * / String prefix = file.getOriginalFilename () substring (0, file.getOriginalFilename () lastIndexOf (.. "." )); / ** * file extension * / String suffix . = file.getOriginalFilename () substring (. "." file.getOriginalFilename () lastIndexOf ( ), file.getOriginalFilename () length ().); Long size = file.getSize () ; / * * processing size * / String filesize= getPrintSize(size); /** * Stored in the database (default =. 1 isdel) * / WcFile wcFile = new new WcFile (); wcFile.setFilename (prefix); wcFile.setFiletype (filetype); wcFile.setFileformat (suffix); wcFile.setFilesize (filesize); wcFile. setCreatetime ( new new a Date ()); wcFile.setCreateperson (user.getId () + "" ); wcFile.setUpdatetime ( new new a Date ()); wcFile.setUpdateperson (user.getId () + "" ); wcFile.setIsdel ( "1"); // before the file did not upload, delete default wcFile.setStatus ( "0"); // not upload wcFileService.insert (wcFile); // warehousing, returns to the above mentioned id int the above mentioned id = wcFile.getId (); / ** * generate a new file name (UUID added + _ + file id) to avoid conflicts * / String uuid = UUID.randomUUID () toString () replaceAll ( "-", ".". ); OriginalFilename = uuid + "_" + the above mentioned id + suffix; / ** * do not have to deal with here IO streams closed issue because FileUtils.copyInputStreamToFile () internal method will automatically be used to turn off the flow of IO * here you can also use MultipartFile.transferTo (file dest) method Spring provides file upload * / file.transferTo ( new newFile (filePath, OriginalFilename)); / ** * FileUtils.copyInputStreamToFile (myfile.getInputStream (), new new * File (filePath, OriginalFilename)); * Image Compression * * / / ** * After a successful upload (updates the corresponding data file ) * / url = url + "/" + OriginalFilename; wcFile.setFileurl (url); // stored in the file address wcFile.setIsdel ( "0"); // display wcFile.setStatus ( "1"); // uploaded successfully wcFileService.updateByPrimaryKey (wcFile); / ** * rich text picture package feedback url (http://localhost:8080/upload/test.html) */ String url2=request.getScheme()+"://"+ request.getServerName()+":"+request.getLocalPort(); Map<String, Object> result2 = new HashMap<String, Object>(); result2.put("src",url2+"/"+url); result.put("code", 0);//layui 识别成功 result.put("SUCCESS", true); result.put("msg", "上传成功"); result.put("data", result2); result.put("fileid", wcFile.getId()); result.put("fileurl", url);//访问地址；如：upload/pcfiles/xxxx.xx return result; } catch (Exception e) { e.printStackTrace(); result.put("SUCCESS", false); result.put("msg", "上传失败"); return result; } }
Wherein the file format is determined automatically added portion
See blog post: the Java file upload, automatically determine the file type
Part of which database operations, the need to modify for their own projects related operations
Reproduced in: https: //www.cnblogs.com/zktww/p/11016697.html