在OSGI蓝图中读取环境变量 [英] Reading enviroment variable in osgi blueprint

问题描述

我正在构建一些部署在OSGi(JBoss保险丝)中的骆驼路线

I'm building some camel routes deployed in OSGi (JBoss Fuse)

我正在使用以下内容读取我的属性文件:

I'm reading my properties file using this:

  <ext:property-placeholder id="propiedades">
    <ext:location>file:/C:/TestBed/sucursal.propiedades</ext:location>
  </ext:property-placeholder>

但是现在我想更改带有路径的占位符的"file:/C:TestBed/"(例如KARAF_ETC).我知道此环境变量存在是因为当我在路由中使用它时，它可以正常工作

But now I want change "file:/C:TestBed/" for some placeholder with some path (like KARAF_ETC). I know this enviroment variable exists because when I use it in the route, it works ok

    from(URI_IN)
    .log("{{env:KARAF_ETC}}") //Output is: C:\jboss-fuse-6.2.0.redhat-133\bin\..\etc
    .to(URI_OUT);

所以，我想做类似的事情:

So, I want to do something like:

  <ext:property-placeholder id="propiedades">
    <ext:location>file:{{env:KARAF_ETC}}/sucursal.propiedades</ext:location>
  </ext:property-placeholder>

但是不起作用.

属性占位符有点棘手，因此我尝试使用file:/{{env:KARAF_ETC}}，file:/{{KARAF_ETC}}，file:$ {KARAF_ETC}和更多组合，但没有一个可用(但有些他们会引发差异错误.

Property placeholder is kinda tricky, so I tried with file:/{{env:KARAF_ETC}}, file:/{{KARAF_ETC}}, file:${KARAF_ETC} and more combinations but no one works (but some of them throw differents errors).

在蓝图中获取环境变量的正确方法是什么?

What is the correct sintaxis to get the enviroments variables in blueprint?

推荐答案

您尝试过吗?

<blueprint 
xmlns:ext="http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.0.0" 
...> 

   <!-- Load system property --> 
   <ext:property-placeholder /> 

   <bean ...><property name="foobar" value="${foobar}"/></bean> 

</blueprint> 

我在这里找到了它: http://karaf .922171.n3.nabble.com/Get-environment-variable-td4025807.html

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