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From "KATADA Junya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MNG-6401) Cannot interpolate property in proxy port of settings.xml
Date Wed, 02 May 2018 03:00:00 GMT
KATADA Junya created MNG-6401:
---------------------------------

             Summary: Cannot interpolate property in proxy port of settings.xml
                 Key: MNG-6401
                 URL: https://issues.apache.org/jira/browse/MNG-6401
             Project: Maven
          Issue Type: Bug
          Components: Bootstrap &amp; Build
    Affects Versions: 3.0
            Reporter: KATADA Junya


If you use a property in proxy port of settings.xml, the property is not replaced and the
port number is "0" instead of property value.

My minimal demo about this problem is [here|https://github.com/jkatada/maven-property-demo]. 

In my demo, export two environment variables as follows.
{quote}export MAVEN_PROXY_HOST_STRING=proxy.foo.com
export MAVEN_PROXY_PORT_INT=18080
{quote}
These variables are used in settings.xml for proxy settings.
{quote}<proxy>
    <id>my_proxy</id>
    <active>true</active>
    <protocol>http</protocol>
    <host>${env.MAVEN_PROXY_HOST_STRING}</host>
    <port>${env.MAVEN_PROXY_PORT_INT}</port>
    <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
 </proxy>
{quote}
Execute maven-help-plugin to show effective settings.xml.
{quote}mvn help:effective-settings -X
{quote}
The result is as follows.
{quote}<proxy>
    <port>0</port>
    <host>proxy.foo.com</host>
    <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
    <id>my_proxy</id>
</proxy>
{quote}
 

`${env.MAVEN_PROXY_HOST_STRING}` is replaced with `proxy.foo.com`, 
but `${env.MAVEN_PROXY_PORT_INT}` is not replaced with `18080`.

I found the following WARNING message in console.
{quote}[WARNING] Some problems were encountered while building the effective settings
[WARNING] Unable to parse element 'port', must be an integer (position: END_TAG seen ...<port>${env.MAVEN_PROXY_PORT_INT}</port>...
@12:47) caused by: java.lang.NumberFormatException: For input string: "${env.MAVEN_PROXY_PORT_INT}"
@ /root/.m2/settings.xml, line 12, column 47
{quote}
I think that the cause of this problem is to parse settings.xml before interpolation.

 



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