将JSP变量传递给html标记属性的最佳实践是什么？

Question

I have a code like <div id="test<%=j%>" class="test" > </div> and my editor shows problems with the matching divs. I suspect this is responsible for a lot of ghosts in my code where values are not populated in beans, etc. Is this a correct way of doing this? Any guidelines or best practices that I should follow?

Answer 1

This code is syntactically correct. The problem is your editor, which doesn't handle JSP scriptlet expressions.

But it's using scriplet expressions, which should not be used anymore (for years). Use the JSP expression language, the JSTL, and other custom tag libraries.

Avoid any scriptlet in the JSPs. Java code should be is Java classes (servlets or actions of your preferred MVC framework).

<div id="test${j}" class="test"> </div>

Answer 2

Best practices for JSP 2.0 and later recommend using JSTL in conjunction with Unified Expression Language .

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
...
<c:set var="j" value="0">
<div id="test${j}" class="test" > </div>