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:

more-content.jsp:

<%@ 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>

Then in my-app.jsp, you can include more-content.jsp and set the value of the answer parameter:

<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 my-app.jsp:

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.

Related Topics

• Using the Liferay Util Include Tag
• Using the Liferay Util Body Top Tag
• Using the Chart Taglib