1 Message
Headers are name-value pairs; the name is a unique, case-insensitive string, and the value is of type java.lang.Object .
Attachments are typically used for the web service and email components.
The body is of type java.lang.Object, When the sender and receiver use different body formats, Camel provides a number of mechanisms to transform the data into an acceptable format, and in many cases the conversion happens automatically with type converters, behind the scenes.
2 Exchange
3 Camel Architecture
CamelContext is , to some extend , like the Application in Spring, it actually is a container
besides thos concepts ,there are also Producer and Consumer
3. 1 Producer
3.2 Consumer
note of camel in action--chapter 1
原文：https://www.cnblogs.com/liuheng0213/p/10527539.html