Java Report download code excel

    /*** Summary Report data download **/        PrivateModelandview Exportsummarydatadown (httpservletrequest request, httpservletresponse response, List<InterfaceCost> interfacecostlistnew)throwsException {//Save to diskString time = qdatetime.datetostring (NewDate (), "Yyyy-mm-dd HH:mi:ss"); time= Time.replaceall ("-", "" "); time=time.replace (":", "" "); time=time.replace ("", "" "); time= Time.substring (2); String file_name= time + ". xls"; String Uploaddir= Request.getrealpath ("/resources") + "\\Interfaceparameter\\"; OutputStream out=NULL; Try{File Dirpath=NewFile (Uploaddir); if(!dirpath.exists ())              {Dirpath.mkdirs (); } out=NewFileOutputStream (uploaddir+file_name); //Set the first row (format of the table header)Jxl.write.WritableFont WFC =NewJxl.write.WritableFont (Writablefont.createfont ("Arial"), One, Writablefont.bold,false, Underlinestyle.no_underline, Jxl.format.Colour.BLACK); Jxl.write.WritableCellFormat WCFFC=NewJxl.write.WritableCellFormat (WFC);//Table StyleWcffc.setalignment (Jxl.format.Alignment.CENTRE);//Center HorizontallyWcffc.setverticalalignment (Jxl.format.VerticalAlignment.CENTRE);//Center VerticallyWcffc.setborder (Border.all, Borderlinestyle.thin);//LinesWritableworkbook WB = Workbook.createworkbook (out);//in the Write streamWritablesheet ws = Wb.createsheet ("Sheet1", 1); int[] GeSHi = {30,20,20};//Get column width             for(inti = 0; i < geshi.length; i++) {Ws.setcolumnview (I, geshi[i]); }                  //int ionor = 0;//Order column record value identification//Total DataJxl.write.Label name =NewJxl.write.Label (0, 0, "Interface name"), WCFFC);            Ws.addcell (name); Jxl.write.Label Count=NewJxl.write.Label (1, 0, "usage count", WCFFC);            Ws.addcell (count); Jxl.write.Label Amount=NewJxl.write.Label (2, 0, "consumption points", WCFFC);                            Ws.addcell (amount); //Show data after the second row//format data after the second rowWFC =NewJxl.write.WritableFont (Writablefont.arial, ten, Writablefont.no_bold,false, Underlinestyle.no_underline, Colour.black); WCFFC=NewWritablecellformat (WFC); Wcffc.setalignment (Jxl.format.Alignment.CENTRE);//Center HorizontallyWcffc.setverticalalignment (Jxl.format.VerticalAlignment.CENTRE);//Center VerticallyWcffc.setborder (Border.all, Borderlinestyle.thin);//Lines                        intIonor = 0;//Order column record value identificationInteger addupto = 0;  for(Interfacecost interfacecost:interfacecostlistnew) {Jxl.write.Label Opttype=NewJxl.write.Label (0, Ionor + 1, Interfacecost.getinterfacename (), WCFFC);                                Ws.addcell (Opttype); Jxl.write.Number Totlecount=NewJxl.write.Number (1, Ionor + 1, Interfacecost.gettotlecount (), WCFFC);                                Ws.addcell (Totlecount); Jxl.write.Number Totle=NewJxl.write.Number (2, Ionor + 1, Interfacecost.gettotlecost (), WCFFC);                                Ws.addcell (Totle); Addupto+=Interfacecost.gettotlecost (); Ionor++; //ws.mergecells (0, Ionor, 1, ionor);//Merge Cells} Ionor=ionor+1; Jxl.write.Label Numbername=NewJxl.write.Label (0, Ionor, "Total consumption" +addupto.tostring () + "points", WCFFC);                        Ws.addcell (Numbername); Ws.mergecells (0, Ionor, 2, Ionor);//Merge CellsWb.write (); Wb.close ();//out.close ();                    } Catch(Exception ex) {ex.printstacktrace (); }finally{            if(out!=NULL) {out.close (); }        }            //read from diskInputStream instream =NULL; OutputStream Outs=NULL; Try{Response.setcontenttype ("Application/vnd.ms-excel"); Response.AddHeader ("Content-disposition", "attachment; Filename= "+ file_name +" "); Instream=NewFileInputStream (uploaddir+file_name);//String linetxt = null;Outs =Response.getoutputstream (); byte[] buf =New byte[4096]; intreadlength;  while(((Readlength = Instream.read (BUF))! =-1) {outs.write (buf,0, readlength); }//instream.close ();Outs.flush ();//outs.close ();}Catch(Exception e) {log.error ("Error reading file contents");         E.printstacktrace (); }finally{             if(out!=NULL) {out.close (); }             if(instream!=NULL) {instream.close (); }         }                return NULL; }

Java Report download code excel