CODEWITHSUNDEEP
javaspringapache-camel
YMA
YMA

Reputation: 259

Apache Camel - Spring DSL - Pass String argument to bean method

On Camel 2.10.1, the following worked:

<camel:bean ref="profilingBean" method="addProfilingContext('TEST')"/>

The method in question takes a String parameter

Migrating to 2.10.6 , this does not work anymore, it tries to call TEST as another class. I have tried wrapping with ${} , trying to use exotic combinations of "& quot;" etc...

The only solution I found was to put the value in a header using constant language then call the header using simple. Obviously, this isn't very clean...

Do you have any ideas how to do this?

Cheers

Upvotes: 2

Views: 4657

Answers (2)

groundhog2k
groundhog2k

Reputation: 41

The behavior/bug still exists in Camel 2.16 and also in latest 2.18.2.

For every string constant that is passed to a bean via Spring DSL a java.lang.ClassNotFoundException is thrown. It gets more visible by setting logger for org.apache.camel.util.ObjectHelper to TRACE.

This camel behavior also has serious negative performance impact because ClassLoader method (java.lang.ClassLoader.loadClass) is synchronized for a given parameter name. I wrote a little demo to show this: https://github.com/groundhog2k/camel-dsl-bean-bug

Upvotes: 4

Claus Ibsen
Claus Ibsen

Reputation: 55535

Your solution with the header is fine. The bug you talk about should be fixed in 2.10.7, or 2.11.1 etc.

Upvotes: 1

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