Set up string reference in proxy.xml

[victo...@gmail.com]

Hi, when configure the proxy.xml for multiple rules sometimes we have requirements to share the same resource string in different tags. Instead of duplicate the setup, is it possible to define a string at one place then reference it multiple times elsewhere? e.g.

<string id="string1" value="abc.net" />

<string id="port1" value="1234" />

<target host="${string1}" port ="${port1}">

[Tobias Polley]

Hi Victor,

probably using Spring's PropertyPlaceholderConfigurer works.

http://docs.spring.io/spring/docs/3.1.2.RELEASE/spring-framework-reference/htmlsingle/spring-framework-reference.html#beans-factory-placeholderconfigurer

In your example it would be

<spring:beans ...>

  <spring:bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <spring:property name="properties">
      <spring:value>string1=abc.net</spring:value>
    </spring:property>
  </spring:bean>

  <router>
    <serviceProxy ...>
       ...
      <target host="${string1}"/>
    </serviceProxy>
  </router>
</spring:beans>

Please let us know whether it does!

Best, Tobias

[victo...@gmail.com]

Great, but it somehow only works for the <target> host property, if I apply it to the port property it just failed with following error:

12:08:25,762 ERROR HotDeploymentThread:90 - line 123: cvc-datatype-valid.1.2.1: '$p{string1}' is not a valid value for 'integer'.

and here is my config:

<spring:beans ...>

  <spring:property name="placeholderPrefix" value="$p{" />

  <spring:property name="placeholderSuffix" value="}" />

  <spring:bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <spring:property name="properties">
      <spring:value>string1=5679</spring:value>
    </spring:property>
  </spring:bean>

  <router>
    <serviceProxy ...>
       ...
      <target port="$p{string1}" host="abc.net"/>
    </serviceProxy>
  </router>
</spring:beans>