Spring形式-modelAttribute名称为java常数

Question

in order to not repeat myself in code I've used modelAttribute name as java constant

@Controller
@RequestMapping("/")
public class Controller {
    public static final String MODEL_ATTRIBUTE = "myModel";

    public String renderPage(Model model) {
        model.addAttribute(MODEL_ATTRIBUTE, ...);
        return "index";
    }
}

Now I import this constant into JSP using scriptlet (I know that scriptlets are bad, but I'm not familiar with better solution).

<%@page contentType="text/html" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>

<%@page import="static com.example.Controller.*" %>

<form:form action="/" modelAttribute="<%= MODEL_ATTRIBUTE %>">

    <form:label path="attr1">Attribute:</form:label>
    <form:input path="attr1" />

    <c:forEach items="${???.attr2}" var="item">
        ...    
    </c:forEach>
    <input type="submit" />
</form:form>

How should I refer to modelAttribute object in the forEach loop? Is there better solution for DRY in Spring forms?

Answer 1

Use the model name,

<c:forEach items="${myModel.attributeNameFromYourModel}" var="item">
        ...    
</c:forEach>