从jsp页面读取值后发生异常

Question

I am inserting values into database but I am getting UIException here is my code sample,

public void createTeacherInfo(HttpServletRequest request) {
            try{

                TeacherInfo teacherInfo= new TeacherInfo();
                request.getParameter("flowName");
                DateFormat df = new SimpleDateFormat("dd-mm-yyyy");

                String tId= request.getParameter("teacherId");
                teacherInfo.setTeahcerId(Integer.parseInt(tId));

                //teacherInfo.setTeahcerId(Integer.parseInt(request.getParameter("teacherId")));
                teacherInfo.setTeacherName(request.getParameter("teacherName"));
                /*teacherInfo.setDob(df.parse(request.getParameter("dob")));
                teacherInfo.setDoj(df.parse(request.getParameter("doj")));*/
                teacherInfo.setTeacherEducation(request.getParameter("education"));
                teacherInfo.setPreviousEmployeDetails(request.getParameter("prevdetails"));
                //teacherInfo.setYearOfExper(Integer.parseInt(request.getParameter("experience")));
                teacherInfo.setTeahcherPhoto(request.getParameter("photo"));
                teacherInfo.setTeacherEmail(request.getParameter("email"));
                System.out.println(tId);
                System.out.println("TeacherId");
                pupilInfoManagementBusinessService.createTeacherInfo(teacherInfo);

                }catch (BusinessException e) {
                    webLayerLogger.error(CommonUtils.getStackTrace(e));
                    throw new UIException(e,UIMessageHelper.getLocalValue("exception while Inserting data"));
                }
}

In this method after reading all values it will go to service method , Here is service class method,

@Override
public void createTeacherInfo(TeacherInfo teacherInfo) throws BusinessException {
    try {
         pupilInfoManagementDataService.createTeacherInfo(teacherInfo);
    }catch (Exception e) {
        businessServiceLogger.error(CommonUtils.getStackTrace(e));
        throw new BusinessException(this.getClass(), e, e.getMessage());
    }

}

My problem is values are reading but not inserting to database. Please help me in this .

Answer 1

I'll bet the html form for this includes a file upload for the photo. When a form includes a file upload, then request.getParameter will not work any longer (the values will always be null ). When you do a file upload you have to use Apache Commons File Upload library to retrieve the parameters from the request, or you can use request.getPart (if you are on the latest version of your servlet container).