CODEWITHSUNDEEP
javaspringjspspring-mvcjstl
user3684675
user3684675

Reputation: 381

get elements stored in LinkedHashMap in jsp page

How to get LinkedHashMap in the jsp page which is added in ModelAndView object in the spring controller.Please see the below code:

UserDTO:

public class UserDTO{

    public byte[] data;
    public String user;
    public Long id;

    public byte[] getData() {
        return data;
    }
    public void setData(byte[] data) {
        this.data = data;
    }
    public String getUser() {
        return user;
    }
    public void setUser(String user) {
        this.user = user;
    }
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
}

Controller:

@RequestMapping(value = "/showData", method = RequestMethod.GET)
    public String showRequest(final HttpServletRequest request,
             HttpServletResponse response, ModelMap model,
             @RequestParam("ID") String Id) {
         MyDTO myRequestDTO = new MyDTO();
        String viewName = "myData";
        final ModelAndView mav = new ModelAndView();

    LinkedHashMap<Long,UserDTO> myList = myRequestsDTO.getAllRecords();
        /*  UserDTO userDoc = null;
            Long userDocKey;
            if(!myList.isEmpty()){
            for (Map.Entry<Long,UserDTO> doc : myList.entrySet()) {     
                  userDoc = doc.getValue();
                  userDocKey = doc.getKey();
                System.out.println("User  = " + userDoc.getUser() + " User Name = " + userDoc.getData());

            } } */
mav.addObject("myList", myList);//want to get this myList in jsp page and get the details from that.
return viewName;
}

Please suggest how to get the LinkedHashMap stored in ModelAndView object and get "userDoc.getUser() ", "userDoc.getId()" and "userDoc.getData()" from that map as i have shown in above controller code. I know that this can be achieved using JSTL but as i'm new to it please let me know the solution which is much helpful to me.

Upvotes: 0

Views: 1596

Answers (1)

obourgain
obourgain

Reputation: 9336

You can iterate over your map with JSTL using foreach.

<c:forEach var="entry" items="${myList}">
  Key  : <c:out value="${entry.key}"/>

  User : <c:out value="${entry.value.user}"/>
  Id   : <c:out value="${entry.value.id}"/>
  Data : <c:out value="${entry.value.data}"/>

</c:forEach>

Upvotes: 2

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