java - how to store image or any type of document in database using mvc -

i have 1 pojo class setter , getter method , 1 servlet class in getting values jsp page , calling function of dataaccess class employeebean , passing parameter problem coming not getting inserted databse because blob , datatype probelm please me here...

public class employee  {  private int empid; private string iname; private string photo; private string contenttype; private int contentlength; private inputstream inputstream;  public inputstream getinputstream() {     return inputstream; } public void setinputstream(inputstream inputstream) {     this.inputstream = inputstream; }  public string getcontenttype() {     return contenttype; } public void setcontenttype(string contenttype) {     this.contenttype = contenttype; }   public int getcontentlength() {     return contentlength; } public void setcontentlength(int contentlength) {     this.contentlength = contentlength; } public string getiname() {     return iname; } public void setiname(string iname) {     this.iname = iname; }  }    @multipartconfig(maxfilesize = 18177215)     @webservlet(name = "fileuploadservlet", urlpatterns = {"/fileuploadservlet"}) public class fileuploadservlet extends httpservlet   {   protected void processrequest(httpservletrequest request,      httpservletresponse response)         throws servletexception, ioexception {  httpsession session = request.getsession(true);  inputstream inputstream = null;  employee emp1 = (employee)session.getattribute("emp1"); int n = emp1.getempid();    emp1.setempid(emp1.getempid()); emp1.setiname(request.getparameter("iname"));  part filepart = request.getpart("photo"); if (filepart != null) {     emp1.setcontenttype(filepart.getcontenttype());     emp1.setcontentlength((int) filepart.getsize());     inputstream = filepart.getinputstream();     emp1.setinputstream(inputstream);     employeebean eb = new employeebean();         emp1 = eb.addimage(emp1);        session.setattribute("emp1",emp1);         response.sendredirect("employeedetail.jsp");    }  }  }    @override   protected void doget(httpservletrequest request, httpservletresponse response)           throws servletexception, ioexception {       processrequest(request, response);   }       @override   protected void dopost(httpservletrequest request, httpservletresponse response)           throws servletexception, ioexception {       processrequest(request, response);   }     @override   public string getservletinfo() {       return "short description";   } }      public employee addimage(employee emp1) {   connection con = null;   statement stmt = null;   preparedstatement pstmt = null;   resultset rs = null;  try {       con = connectionmanager.getconnection();       stmt = con.createstatement();       pstmt = con.preparestatement("insert upload_documents(name, contenttype,     contentlength, empid, photo) values(?,?,?,?,?)");        pstmt.setstring(1, emp1.getiname());       pstmt.setstring(2, emp1.getcontenttype());       pstmt.setint(3, emp1.getcontentlength());       pstmt.setint(4, emp1.getempid());     pstmt.setblob(5,emp1.getinputstream());       pstmt.execute();         } catch (sqlexception  ex) {    } {       try {           if (stmt != null) {               stmt.close();           }           if (con != null) {               con.close();           }       } catch (sqlexception ex) {           logger.getlogger(employeebean.class.getname()).log(level.severe, null, ex);       }   }   return emp1;  } 

public class employee  { .... private byte[] filebytes; ..... }  @multipartconfig(maxfilesize = 18177215)     @webservlet(name = "fileuploadservlet", urlpatterns = {"/fileuploadservlet"}) public class fileuploadservlet extends httpservlet   {   protected void processrequest(httpservletrequest request,      httpservletresponse response)         throws servletexception, ioexception {     ....     inputstream = filepart.getinputstream()     emp1.setfilebytes(ioutils.tobytearray(is))     } ...... }  public employee addimage(employee emp1) {   connection con = null;   statement stmt = null;   ....    pstmt.setbytes(5,emp1.getfilebytes());   .... }