红帽全球峰会262.5. PropertyResolver
Camel 提供了一个可插拔机制，它允许第三部分提供自己的解析器查找属性。Camel 提供了一个默认的实现 org.apache.camel.component.properties.DefaultPropertiesResolver，它能够从文件系统、classpath 或 Registry 载入属性。您可以通过以下方法为位置添加前缀：
-
ref:Camel 2.4: to lookup in the Registry -
file:从文件系统载入 -
classpath：从 classpath 中加载（如果没有提供前缀，这也为默认值） -
蓝图：Camel 2.7： 使用特定的 OSGi 蓝图占位符服务
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