Using Liferay Util Param¶
The param tag lets you set a parameter for an included JSP page. This configuration requires two JSPs. JSP A, the main view of the app, includes JSP B and sets its parameter value. This lets you dynamically set content when you include the JSP.
For example, say you have your main functionality in
my-app.jsp, and you have additional functionality provided by
more-content.jsp. You could have the example configuration shown below:
<%@ page import="com.liferay.portal.kernel.util.ParamUtil" %> <% String answer = ParamUtil.getString(request, "answer"); %> <div> <p>The answer to life, the universe and everything is <%= answer %>.</p> </div>
my-app.jsp, you can include
more-content.jsp and set the value of the
<liferay-util:include page="/path/to/more-content.jsp" servletContext="<%= application %>"> <liferay-util:param name="answer" value="42" /> </liferay-util:include>
This results in the following output in
The answer to life, the universe and everything is 42.
Now you know how to use the
<liferay-util:param> tag to set parameters for included JSPs. You can use this approach to include common reusable pieces of code in your apps.