title: update a row using spring jdbctemplate
body: <p>I am new to spring. I am developing a CRUD application using spring jdbc template. I am done with insert and select. but in update am facing some problem. can anybody provide me a simple example of update and delete using jdbctemplate.
  thnks in advance.</p>
  
  <p>MY CONTROLLER-</p>
  
  <pre><code>@RequestMapping(method = RequestMethod.GET)
      public String showUserForm(@ModelAttribute(value="userview")  User user,ModelMap model)
      {
          List list=userService.companylist();
          model.addAttribute("list",list);
          return "viewCompany";
      }
  
  @RequestMapping( method = RequestMethod.POST)
  public String add(@ModelAttribute(value="userview") @Valid User user, BindingResult result) 
  {
      userValidator.validate(user, result);
      if (result.hasErrors()) {
          return "viewCompany";
      } else {
          userService.updateCompany(user);
          System.out.println("value updated");
          return "updateSuccess";
      }
  </code></pre>
  
  <p>when i click on update button the edited values should be updated in my DB according to the row ID , my problem is how to map the row id from jsp to controller.</p>