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Chapter 66. Constant Language
Available as of Camel version 1.5
The Constant Expression Language is really just a way to specify constant strings as a type of expression.
This is a fixed constant value that is only set once during starting up the route, do not use this if you want dynamic values during routing.
66.1. Constant Options 링크 복사링크가 클립보드에 복사되었습니다!
The Constant language supports 1 options which are listed below.
Name | Default | Java Type | Description |
---|---|---|---|
trim |
|
| Whether to trim the value to remove leading and trailing whitespaces and line breaks |
66.2. Example usage 링크 복사링크가 클립보드에 복사되었습니다!
The setHeader element of the Spring DSL can utilize a constant expression like:
in this case, the Message coming from the seda:a Endpoint will have 'theHeader' header set to the constant value 'the value'.
And the same example using Java DSL:
from("seda:a") .setHeader("theHeader", constant("the value")) .to("mock:b");
from("seda:a")
.setHeader("theHeader", constant("the value"))
.to("mock:b");
66.3. Dependencies 링크 복사링크가 클립보드에 복사되었습니다!
The Constant language is part of camel-core.