public string upfile(byte[] filebyte,java.lang.string filename ){
  try{
   system.out.println("fdjkj");
  file f=new file(filename);
   dataoutputstream fileout=new dataoutputstream(new fileoutputstream(f));
     
   fileinputstream fi=new fileinputstream(f);
   int li=fi.read(filebyte,0,filebyte.length-1);
   fileout.write(filebyte,0,filebyte.length-1);//这两句不能颠倒，上面依据是表示开始向fileinputstream中读入数据，这一句才是把byte[]中的数据读入到流中
   system.out.println("fdjkj");
   string dname="com.microsoft.jdbc.sqlserver.sqlserverdriver";
   string conurl="jdbc:microsoft:sqlserver://159.164.176.116:1038;databasename=digital lab";
 //  file f1=new file(""+fds.get("fileid") );
      connection con=null;
         statement stm=null;
   resultset rs=null;
   preparedstatement ps=null;
        
         class.forname(dname).newinstance();system.out.println("fdjkj");
   con=drivermanager.getconnection(conurl,"gaolong1","831001");system.out.println("fdjkj");
   string sql="insert into testejbfile values('"+filename+"',?,"+(filebyte.length-1)+")";
   //string sel="select * from  xinxi where changhao=215;";
   //string sel="select * from  custom where yuming='212';";
         ps=con.preparestatement(sql);system.out.println("fdsssssjkj");
         ps.setbinarystream(1,fi,(int)filebyte.length-1);
       //  ps.setbytes(1,b);
            ps.executeupdate();system.out.println("fdjkj");
               ps.close();
  return "ok";
  }catch(exception e){
   e.printstacktrace();
   return "false";
  }
 }
}