Using JSP to write file upload program

js| Program | upload

If you have used VB to write the components of the file upload, then the Java file Upload JavaBean is very easy. The following example is just a simple version Package yuanyifileup; Import java.io.*; Import java.util.*; Import javax.servlet.*; Import javax.servlet.http.*; Import Javax.servlet.jsp.PageContext; public class Yuanyifileup { private ServletRequest request; Private Servletresponse response; Private ServletConfig config; ServletInputStream DATA; int formsize; File F1; FileOutputStream OS; DataInputStream is; String filename; Byte[] B; BYTE T; Boolean flag=false; Public Yuanyifileup () { } public void Initialize (ServletConfig config,httpservletrequest request,httpservletresponse response) throws IOException { This.request=request; This.response=response; This.config=config; DATA = Request.getinputstream (); Formsize=request.getcontentlength (); } public void Initialize (PageContext pagecontext) throws IOException { Request=pagecontext.getrequest (); Response=pagecontext.getresponse (); Config=pagecontext.getservletconfig (); DATA = Request.getinputstream (); Formsize=request.getcontentlength (); } public Boolean setfilename (String s) { Try { File F1=new file (s); Os=new FileOutputStream (F1); } catch (IOException E) {return (false);} return (true); } public void GetByte () { int i=0; Try { Is=new DataInputStream (DATA); B=new Byte[formsize]; while (true) { Try { T=is.readbyte (); b[i]=t; i++; } catch (Eofexception e) {break;} } Is.close ();} catch (IOException E) {} } public Boolean Save () { int i=0,start1=0,start2=0; String temp=\ "\"; if (!flag) { GetByte (); Flag=true; } Try { Temp=new String (b,\ "iso8859_1\"); } catch (Unsupportedencodingexception e) {return (false);} Start1=temp.indexof (\ "image/\"); Temp=temp.substring (START1); Start1=temp.indexof (\ "\\r\\n\\r\\n\"); Temp=temp.substring (START1+4); Start2=temp.indexof (\ "; \\r\\n\"); if (start2!=-1) { Temp=temp.substring (0,START2); } Try { Byte[] Img=temp.getbytes ("iso8859_1\"); for (i=0;i{os.write (img[i]);} Os.close (); } catch (IOException E) {return (false);} return (true); } If there is not clear to the forum to express their views }