Maven filtering doesn't work with properties in pom.xml - spring

Question

I am trying to configure my pom.xml file in order to replace placeolders in a configuration file for Spring.
Here is my pom.xml :
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>tbetous.spring</groupId>
<artifactId>blog</artifactId>
<name>learning-tp-blog</name>
<packaging>war</packaging>
<version>1.0.0-BUILD-SNAPSHOT</version>
<properties>
<java-version>1.6</java-version>
<env>dev</env>
<org.springframework-version>3.1.1.RELEASE</org.springframework-version>
<org.aspectj-version>1.6.10</org.aspectj-version>
<org.slf4j-version>1.6.6</org.slf4j-version>
</properties>
<dependencies>
[ALL DEPENDENCIES]
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/webapp</directory>
<filtering>true</filtering>
<includes>
<include>WEB-INF/spring/application-context-infrastructure-env.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/webapp</directory>
<filtering>false</filtering>
<excludes>
<exclude>WEB-INF/spring/application-context-infrastructure-env.xml</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
<configuration>
<additionalProjectnatures>
<projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
</additionalProjectnatures>
<additionalBuildcommands>
<buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
</additionalBuildcommands>
<downloadSources>true</downloadSources>
<downloadJavadocs>true</downloadJavadocs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
<compilerArgument>-Xlint:all</compilerArgument>
<showWarnings>true</showWarnings>
<showDeprecation>true</showDeprecation>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>org.test.int1.Main</mainClass>
</configuration>
</plugin>
</plugins>
</build>
</project>
Here is my Spring configuration file (*path : /src/main/webapp/WEB-INF/spring/application-context-infrastructure-env.xml) :
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- ${env} is a variable that is replaced at build time by Maven (see pom.xml).-->
<import resource="infrastructure/${env}/application-context-${env}-infrastructure.xml"/>
</beans>
But when I try to launch my application after a mvn clean install, I get this :
org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Failed to import bean definitions from relative location [application-context-infrastructure-env.xml]
Offending resource: ServletContext resource [/WEB-INF/spring/application-context.xml]; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from ServletContext resource [/WEB-INF/spring/application-context-infrastructure-env.xml]; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'env'
And when I look at my application-context-infrastructure-env.xml in the target directory, nothing have changed. I have the ${env} placeholder.
I think my maven filtering doesn't work correctly. Could you help me to fix this ?

Answer 1

I think you have to use the maven-war-plugin.
Example configuration from one of my projects:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.5</version>
<configuration>
<filteringDeploymentDescriptors>true</filteringDeploymentDescriptors>
<webResources>
<resource>
<directory>src/main/webapp</directory>
<includes>
<include>**/*.html</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/webapp/META-INF</directory>
<targetPath>/META-INF</targetPath>
<filtering>true</filtering>
</resource>
</webResources>
</configuration>
</plugin>
Simply adjust the <directory> elements.