红帽全球峰会37.13. Common gotchas with folder 和 filenames
当 Camel 生成文件（写入文件）时，有几个影响了如何设置您选择的文件名。默认情况下，Camel 将使用消息 ID 作为文件名，并且消息 ID 通常是唯一的 ID，因此您将以文件名结尾，例如： ID-MACHINENAME-2443-1211718892437-1-0。如果不需要此类文件名，则必须在 CamelFileName 消息标头中提供文件名。也可使用常量 Exchange.FILE_NAME。
以下示例代码使用消息 ID 作为文件名生成文件：
from("direct:report").to("file:target/reports");
from("direct:report").to("file:target/reports");
使用 report.txt 作为您需要做的文件名：
from("direct:report").setHeader(Exchange.FILE_NAME, constant("report.txt")).to( "file:target/reports");
from("direct:report").setHeader(Exchange.FILE_NAME, constant("report.txt")).to( "file:target/reports");-
与以上相同，但使用
CamelFileName：
from("direct:report").setHeader("CamelFileName", constant("report.txt")).to( "file:target/reports");
from("direct:report").setHeader("CamelFileName", constant("report.txt")).to( "file:target/reports");以及使用 fileName URI 选项在端点上设置文件名的语法。
from("direct:report").to("file:target/reports/?fileName=report.txt");
from("direct:report").to("file:target/reports/?fileName=report.txt");
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