Servlet3.0 Uploading Files

1  PackageCom.itheima.upload;2 3 ImportJava.io.File;4 ImportJava.io.FileOutputStream;5 Importjava.io.IOException;6 ImportJava.io.InputStream;7 ImportJava.io.OutputStream;8 9 Importjavax.servlet.ServletException;Ten ImportJavax.servlet.annotation.MultipartConfig; One ImportJavax.servlet.annotation.WebServlet; A ImportJavax.servlet.http.HttpServlet; - Importjavax.servlet.http.HttpServletRequest; - ImportJavax.servlet.http.HttpServletResponse; the ImportJavax.servlet.http.Part; -  - Importcom.itheima.utils.UUIDUtils; - Importcom.itheima.utils.UploadUtils; + /** - * File Upload servlet + * Form items: Divided into two categories is the File Table item category is non-file table items (normal form items, do not have to set enctype= "Mutipart/form-data") A  */ at @MultipartConfig -@WebServlet ("/uploadservlet") -  Public classUploadservletextendsHttpServlet { -     Private Static Final LongSerialversionuid = 1L; -     protected voidDoget (HttpServletRequest request, httpservletresponse response)throwsservletexception, IOException { -         //Accept normal data non-file form items that are normal form items do not have to set enctype= "Multipart/form-data" inRequest.setcharacterencoding ("UTF-8"); -String Filedesc = Request.getparameter ("Filedesc"); toSYSTEM.OUT.PRINTLN ("File Description:" +filedesc); +         //The Accept File file form item must meet the three-factor post form enctype= "Multipart/form-data" -         //get the part object directly from the Name property of the form file control (<input type= "file" name= "upload" >) thePart part = Request.getpart ("Upload"); *         //Get File Size $         LongSize =part.getsize ();Panax NotoginsengSYSTEM.OUT.PRINTLN ("File size:" +size); -String name =part.getname (); theSystem.out.println (the value of the file upload form's Name property is: "+name); +         //Get header information AString Header = Part.getheader ("Content-disposition"); the System.out.println (header); +         //get file name \ "For Escape -         intLastIndexOf = Header.lastindexof ("filename=\" "); $String filename = header.substring (lastindexof+10, Header.length ()-1); $System.out.println ("File name:" +filename); -         //Get file Content -InputStream ips =Part.getinputstream (); the         //get the folder path to upload -String Realpath = This. Getservletcontext (). Getrealpath ("/upload");Wuyi System.out.println (realpath); the         //get a unique file name -String Uniname =uuidutils.getuuidfilename (filename); Wu         //get a new upload path -String Fenglipath = Realpath +Uploadutils.getpath (uniname); About System.out.println (fenglipath); $         //create file object for upload path -File File =NewFile (fenglipath); -         //if the upload path does not exist, create -         if(!file.exists ()) { A file.mkdirs (); +         } the         //Create a byte output stream with the parameter "path + file name" -OutputStream Ops =NewFileOutputStream (fenglipath+ "/" +uniname); $         //IO Stream read/write the         byte[] bytes =New byte[1024]; the         intLen; the          while((Len=ips.read (bytes))!=-1){ theOps.write (Bytes, 0, Len); -         } in         //off-Stream the ips.close (); the ops.close (); About          the          the     } the     protected voidDoPost (HttpServletRequest request, httpservletresponse response)throwsservletexception, IOException { + doget (request, response); -     } the Bayi}

Servlet3.0 Uploading Files