java - JSTL or JSP 2.0 EL for getter with argument

Question

How can I access a getter that has a parameter using JSTL or JSP 2.0 EL?

I want to access something like this:

public FieldInfo getFieldInfo(String fieldName) {
 ....
}

I could access this in Struts by using mapped properties but don't know if it is possible in JSTL or JSP 2.0.

I tried everything but is not working.

Answer 1

Passing method arguments in EL is only by EL spec supported in EL 2.2. EL 2.2 is by default shipped in Servlet 3.0 / JSP 2.2 containers. So if you're using a Servlet 3.0 container (Tomcat 7, Glassfish 3, JBoss 6, etc) and your web.xml is declared conform Servlet 3.0 spec, then you should be able to access it as follows

${bean.getFieldInfo('fieldName')}

Since you explicitly mentioned JSP 2.0, which is part of the old Servlet 2.4 spec, I assume that there's no room for upgrading. Your best bet is to replace the method by

public Map<String, FieldInfo> getFieldInfo() {
    // ...
}

so that you can access it as follows

${bean.fieldInfo.fieldName}

or

${bean.fieldInfo['fieldName']}

or

${bean.fieldInfo[otherBean.fieldName]}