Spring placeholder doesn't resolve properties in JavaConfig
Currently i have a Spring xml configuration (Spring 4) which load a properties file.
context.properties
my.app.service = myService
my.app.other = ${my.app.service}/sample
Spring xml configuration
<bean id="contextProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="ignoreResourceNotFound" value="true" />
<property name="fileEncoding" value="UTF-8" />
<property name="locations">
<list>
<value>classpath:context.properties</value>
</list>
</property>
</bean>
<bean id="placeholder" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="ignoreResourceNotFound" value="true" />
<property name="properties" ref="contextProperties" />
<property name="nullValue" value="@null" />
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
</bean>
Bean which use the properties
@Component
public class MyComponent {
@Value("${my.app.other}")
private String others;
}
This works perfectly and the others value is MyService/sample , as excepted. But when i try to replace this configuration by a JavaConfig, the @Value in my component doesn't works in the same way. the value isn't myService/sample but ${my.app.service}/sample .
@Configuration
@PropertySource(name="contextProperties", ignoreResourceNotFound=true, value={"classpath:context.properties"})
public class PropertiesConfiguration {
@Bean
public static PropertyPlaceholderConfigurer placeholder() throws IOException {
PropertyPlaceholderConfigurer placeholder = new PropertyPlaceholderConfigurer();
placeholder.setNullValue("@null");
placeholder.setSystemPropertiesMode(PropertyPlaceholderConfigurer.SYSTEM_PROPERTIES_MODE_OVERRIDE);
return placeholder;
}
}
Did i miss something in the conversion from xml to Javaconfig ?
ps : I also try to instantiate a PropertySourcesPlaceholderConfigurer instead of a PropertyPlaceholderConfigurer without more success.
Update to use configure PropertySourcesPlaceholderConfigurer . Just having @PropertySource annotation will not be sufficient:
@Bean
public static PropertySourcesPlaceholderConfigurer properties() {
return new PropertySourcesPlaceholderConfigurer();
}
@PropertySource annotation does not automatically register a PropertySourcesPlaceholderConfigurer with Spring. Hence we need to explicitly configure PropertySourcesPlaceholderConfigurer
Below JIRA ticket has more information on the rationale behind this design:
https://jira.spring.io/browse/SPR-8539
UPDATE: Created simple Spring boot application to use nested properties. It is working fine with the above configuration.
https://github.com/mgooty/property-configurer/tree/master/complete
Another option is to import PropertyPlaceholderAutoConfiguration.class.
import org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration;
@Import(PropertyPlaceholderAutoConfiguration.class)
The annotation includes a PropertySourcesPlaceholderConfigurer in the context if it doesn't exist.
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