Are both getters and setters mandatory in JSF's managed beans?

问题

I have a JSF component which is initialized from a managed bean's getter getProperty(). Is it mandatory to also have a setter setProperty() in that managed bean?

回答1:

It depends.

Some property bindings must be read-write. For example, if you bind the value of a component that implements EditableValueHolder. Other properties can be read-only.

If you use the binding attribute for dynamically creating component instances, this must also be read-write as per the contract defined in the specification.

回答2:

No, not mandatory. Unless you want to be able to bind the property in a way that allows its value to be changed.

EG. If you have a list of objects you want to display in a data table then a setter may not be needed. If you bind a string property to an textInput then you will need a setter.

来源：https://stackoverflow.com/questions/7580167/are-both-getters-and-setters-mandatory-in-jsfs-managed-beans