骆驼:“文件"组件，但仅将文件名作为正文传递 [英] Camel: "file" component, but only pass file name as body

问题描述

我正在尝试使用 Camel 处理潜在的大文件，并且担心它们适合"在 Camel Message 的正文中.有没有一种方法可以将文件的名称(路径)作为消息正文传递，然后在处理器中使用它从磁盘读取?

I'm trying to process potentially large files using Camel, and am worried about them "fitting" in the body of a Camel Message. Is there a way I can just pass the name (path) of the file as the body of the message, and then in a processor use that to read from disk?

推荐答案

你可以只传入一个 java.io.File 实例.这本质上是 Camel 文件组件自己做的事情(尽管它被放置在 WrappedFile 中，因为与 ftp 组件共享代码).

You can just pass in a java.io.File instance. This is essentially what the Camel file component does itself (although its placed inside a WrappedFile, due sharing code with the ftp components).

您当然也可以将文件名存储为字符串，然后从处理器访问该文件，或者通过

You can of course also just store the name of the file as a String, and then from the processor access the file, either by

String name = exchange.getIn().getBody(String.class);
File file = new File(name);
...
FileInputStream fis = new FileInputStream(file);
// read the file from the stream, etc.

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