Question

HOw can i set a hidden input field value(in jsp) from spring Controller?

Answer 1

You can take some value (id) from database (with findAllIdForUsers() method) and forward to your JSP with model:

@Autowired
ServiceInterface service;

    @RequestMapping(value = "example.html", method = RequestMethod.GET)
    public String viewUsers(Model model){       
    model.addAttribute("usersId", service.findAllIdForUsers());
    return "example";
    }

On JSP you can set this id’s on some button:

<c:forEach items="${ requestScope['users'] }" var="users">

<form action="<%=response.encodeURL(request.getContextPath() + "delete.html") %>" method="POST"> 
<input type="hidden" name="id" value="<c:out value="${ usersId.id }"/>" />
<input type="SUBMIT" value="Delete User" /></form>
</c:forEach>

And then on button click you can sent id to another controller and work or delete this user:

@RequestMapping(value = "delete.html", method = RequestMethod.POST)
    public String deleteUser(@RequestParam("id") int id, Model model) {
    service.delete(id);
    model.addAttribute("usersId", service.findAllIdForUsers());
        return "example";
    }