jsf - Customize converter message to include input with bolded invalid characters -

mojarra 2.1.29

consider standard javax.faces.integer converter. if enter invalid number we'll recieve message:

'foo' must number consisting of 1 or more digits

i need customize message follows if number contains invalid charaters, print input along bolded invalid charaters. instance 1234add

the number contains invalid charaters: 1234add

i think it's not possible define own custom properties file containing message follows:

javax.faces.converter.bigintegerconverter.biginteger={2}: ''{0}'' must number consisting of 1 or more digits. 

do have write own custom converter subclass of javax.faces.integer?

is possible customize error-message in such way without writing custom converter?

yes, it's possible. it's hacky 2 reasons:

• formatting logic been encapsulated in el instead of in reusable java class (although create special tagfile prevent copypasting on place in case intend reuse same logic elsewhere).
• html needed in faces message while <h:message> doesn't support unescaping html (so <h:outputtext> manually grabs message needed display message).

here is:

<h:inputtext binding="#{input}"     converter="javax.faces.integer"      convertermessage="the number contains invalid charaters: #{input.submittedvalue.replaceall('(\\d*)?(\\d+)(\\d*)?', '$1&lt;b&gt;$2&lt;/b&gt;$3')}" /> <h:outputtext id="messageforinput" value="#{facescontext.getmessagelist(input.clientid)[0].summary}" escape="false" /> 

note importance of binding pointing local variable rather bean property.

see also:

• how add html code jsf facesmessage
• render jsf h:message p element instead of span
• how 'binding' attribute work in jsf? when , how should used?