Can not pass Number type parameter to a portlet.

Question

I created a portal applicaiton with a jspx page.
when click on a row of the table , a portlet will get the id of the row, and portlet will be refreshed.
The id type is Number.
when running, logs contains a error:
"PortletModelImpl> <setParameterValue> Cannot set parameter Param1 on PortletBinding OmniPortlet4_1 with a value that is not a String or String Array."
if you change the id type to String, everything will be OK.
but the id type should be number, how to solve this problem.

Answer 1

You should pass the value as a string to your portal and in your portlet convert it back to a number.
If you really want to pass the Number object instead of a string, you can always use events instead of just passing parameters. When you use events, you can attach a payload to the event which can be any type as long as it is serializable.