[WW-3843] overriding default typeconverters in struts.xml does not work

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.4
• Fix Version/s: 2.3.7
• Component/s: XML Configuration
• Assignee: Lukasz Lenart
• Reporter: Pierre Templier
• Created: 20/Jun/12 14:01
• Updated: 05/Nov/12 19:45
• Resolved: 20/Jul/12 20:46

Description

according to the docs one can override default
typeconverters (cf:
http://struts.apache.org/2.3.4/xwork-core/apidocs/com/opensymphony/xwork2/conversion/impl/XWorkBasicConverter.html
)

== Quote from the docs
As from version 2.3.2 you can override default converters by
implementting TypeConverter interface and specifying beans in
struts.xml as follow: <bean
type="com.opensymphony.xwork2.conversion.TypeConverter"
name="collection" class="com.application.MyCollectionConverter"
scope="singleton"/>

I tried with that approach by creating a new TypeConverter (roughly
copied from com.opensymphony.xwork2.conversion.impl.NumberConverter)
adding the following line in struts.xml right after the <struts> tag
<bean type="com.opensymphony.xwork2.conversion.TypeConverter"
name="number" class="com.company.app.NumberConverter"
scope="singleton"/>

but the webapp failed to start with the following error.

Caused by: Bean type interface
com.opensymphony.xwork2.conversion.TypeConverter with the name number
has already been loaded by [unknown location] - bean -
file:/D:/dev/tomcat/webapps/blank/WEB-INF/classes/struts.xml:10:132
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:227)