If you’re an assiduous reader of this blog, then you probably already heard about our vision around APIs, our Anypoint API Manager solution and all our RAML based stories. Those are our recommended way of approaching REST APIs and if you haven’t already, we all highly recommend you to take a look at them. However, we’re about connecting everything, everywhere. Thus we recognize that there are a lot of APIs out there built in plain old Java code and a migration process is not something you can do overnight.

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In the previous lesson Invoking Java Component Over HTTP, we learned how to invoke a simple method of a Java component in Mule Flow. Let’s now go a bit further and see how Mule maps a request message to a specific method in your component using Entry Point Resolvers.

At a high level, Mule uses three types of Entry Point Resolvers.

1. Reflection Entry Point Resolver
2. Annotated Entry Point Resolver
3. Callable interface

In this article,

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