Question

我正在使用Spring MVC和JPA。我正在验证表格。但是，在验证期间，数据会更新到数据库。我不明白为什么会这样。谁能告诉我为什么数据在验证期间会更新？

这是我的代码：

@Override
public String save(HttpServletRequest request,
        @ModelAttribute("modelObject") Ticket entity,
        BindingResult bindingResult, ModelMap model) {
    String type = request.getParameter("type");

    request.getSession().setAttribute("subcontractor", entity.getSubcontractor());
    request.getSession().setAttribute("truck", entity.getVehicle());
    request.getSession().setAttribute("trailer", entity.getTrailer());
    request.getSession().setAttribute("terminal", entity.getTerminal());
    request.getSession().setAttribute("enteredBy", entity.getCreatedBy());
    request.getSession().setAttribute("batchDate", entity.getBillBatch());

    // Validate for Duplicate OriginTicket#
    if (type.equals("complete")) {  
        // validate entity
        try {
            getValidator().validate(entity, bindingResult);
        } catch (ValidationException e) {
            e.printStackTrace();
            log.warn("Error in validation :" + e);
        }
        if (entity.getDriver() == null) {
            bindingResult.rejectValue("driver", "error.select.option",
                    null, null);
        }
        if (entity.getVehicle() == null) {
            bindingResult.rejectValue("vehicle", "error.select.option",
                    null, null);
        }
        if (entity.getOrigin() == null) {
            bindingResult.rejectValue("origin", "error.select.option",
                    null, null);
        }
        if (entity.getDestination() == null) {
            bindingResult.rejectValue("destination", "error.select.option",
                    null, null);
        }
        if (entity.getTrailer() == null) {
            bindingResult.rejectValue("trailer", "error.select.option",
                    null, null);
        }
        if (entity.getCreatedBy() == null) {
            bindingResult.rejectValue("createdBy", "error.select.option",
                    null, null);
        }
        if (entity.getUnloadDate()!=null && entity.getLoadDate()!=null) {
            if (entity.getUnloadDate().before(entity.getLoadDate())) {
                bindingResult.rejectValue("unloadDate", "error.textbox.unloadDate",
                        null, null);
            }
        }
        if(reportService.checkDuplicate(entity,"O")){
            bindingResult.rejectValue("originTicket", "error.duplicate.entry",  null, null);        
        }
        if(reportService.checkDuplicate(entity,"D")){
            bindingResult.rejectValue("destinationTicket", "error.duplicate.entry", null, null);        
        }
        /*if (getUser(request).getBillBatchDate()!=null) {
            entity.setBillBatch(getUser(request).getBillBatchDate());
        }*/
        entity.setStatus(1);
        if(entity.getTicketStatus()!=2){
            System.out.println("\nentity.getTicketStatus()!=2\n");
        entity.setTicketStatus(1);
        }

        // return to form if we had errors
        if (bindingResult.hasErrors()) {
            setupCreate(model, request);
            return urlContext + "/form";
        }
        beforeSave(request, entity, model);
        User user=genericDAO.getById(User.class,entity.getCreatedBy());
        entity.setEnteredBy(user.getName());
        // merge into datasource
        genericDAO.saveOrUpdate(entity);
        cleanUp(request);
        // return to list
        setupCreate(model, request);
        request.getSession().setAttribute("msg",
                "Ticket added successfully");
        return "redirect:create.do";
    } else {
        if(reportService.checkDuplicate(entity,"O")){
            bindingResult.rejectValue("originTicket", "error.duplicate.entry",  null, null);        
        }
        else if(reportService.checkDuplicate(entity,"D")){
            bindingResult.rejectValue("destinationTicket", "error.duplicate.entry", null, null);        
        }
        // return to form if we had errors
        if (bindingResult.hasErrors()) {
            setupCreate(model, request);
            return urlContext + "/form";
        }
        //entity.setBillBatch(getUser(request).getBillBatchDate());

        //entity.setTicketStatus(0);
        entity.setStatus(3);
        if(entity.getTicketStatus()!=2){
            System.out.println("\nNEXT entity.getTicketStatus()!=2\n");
        entity.setTicketStatus(0);
        }
        beforeSave(request, entity, model);
        User user=genericDAO.getById(User.class,entity.getCreatedBy());
        entity.setEnteredBy(user.getName());

        genericDAO.saveOrUpdate(entity);
        return "redirect:create.do";
    }
}

Answer 1

不应该行

genericDAO.saveOrUpdate(entity);

对此负责吗？

为什么数据在验证期间更新

1 个答案: