File Upload Stream Processing commons-fileupload

1. Get Multipartfile from the request

    @RequestMapping (value= "/upload", method=requestmethod.post)    public  @ResponseBody String Handlefileupload (             @RequestParam ("file") multipartfile file            throws ioexception{

2. File Stream Processing

ImportJava.io.File;ImportJava.io.FileOutputStream;Importjava.io.IOException;ImportJava.io.InputStream;ImportOrg.apache.commons.fileupload.util.Streams;Importorg.apache.commons.io.IOUtils;ImportOrg.springframework.web.multipart.MultipartFile; Public classUploadfileutil {/*** Use the same name *@paramfile *@paramFilePath *@return     */     Public StaticString handlefileupload (multipartfile file,string filePath) {Try {            if(!File.isempty ()) {String name=File.getoriginalfilename (); InputStream Inpustream=File.getinputstream (); FileOutputStream Fos=NewFileOutputStream (filepath+file.separator+name); Streams.copy (Inpustream, FOS,true); }Else{                return"Can not upload the file,because it is empty!"; }        } Catch(IOException e) {return"Failed to upload this file,because Stream interrupt unexpectedly"; }        return"Upload file sucess"; }        /*** Rename file with suffix *@paramfile *@paramFilePath *@paramFileName *@return     */     Public StaticString handlefileupload (multipartfile file,string filepath,string fileName) {Try {            if(!File.isempty ()) {InputStream Inpustream=File.getinputstream (); FileOutputStream Fos=NewFileOutputStream (filepath+file.separator+fileName); Streams.copy (Inpustream, FOS,true); }Else{                return"Can not upload the file,because it is empty!"; }        } Catch(IOException e) {return"Failed to upload this file,because Stream interrupt unexpectedly"; }        return"Upload file sucess"; }        /***copy bytes from a large (over 2GB), file with same filename *@paramfile *@paramFilePath *@paramFileName *@return     */         Public StaticString handlelargefileupload (multipartfile file,string filePath) {Try {            if(!File.isempty ()) {String name=File.getoriginalfilename (); InputStream Inpustream=File.getinputstream (); FileOutputStream Fos=NewFileOutputStream (filepath+file.separator+name);                    Ioutils.copylarge (Inpustream, FOS); if(inpustream!=NULL) {inpustream.close (); }                if(fos!=NULL) {fos.close (); }            }Else{                return"Can not upload the file,because it is empty!"; }        } Catch(IOException e) {return"Failed to upload this file,because Stream interrupt unexpectedly"; }        return"Upload file sucess"; }        /***copy bytes from a large (over 2GB), file with rename file *@paramfile *@paramFilePath *@paramFileName *@return     */         Public StaticString handlelargefileupload (multipartfile file,string filepath,string fileName) {Try {            if(!File.isempty ()) {InputStream Inpustream=File.getinputstream (); FileOutputStream Fos=NewFileOutputStream (filepath+file.separator+fileName);                    Ioutils.copylarge (Inpustream, FOS); if(inpustream!=NULL) {inpustream.close (); }                if(fos!=NULL) {fos.close (); }            }Else{                return"Can not upload the file,because it is empty!"; }        } Catch(IOException e) {return"Failed to upload this file,because Stream interrupt unexpectedly"; }        return"Upload file sucess"; }}

File Upload Stream Processing commons-fileupload