The service activator design pattern is one of the Java EE patterns. It is an SI (spring integration) component. It is responsible for triggering or activating a service object or bean which is managed by the spring. A service activator searches through the message channel in order to look for messages. When the message arrives, it calls upon the processing method of the service bean, which is generally, just a POJO. The processing method of the service passes the message or the payload of the message to the processing method, which is generally based upon the parameter type. In fact,
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