I have a Groovy Grails application and I want to access programmatically to a property defined in messages.properties.
As a test, I've tried the following statement:
println "capacity.created: ${messages.properties['capacity.created']}"
But it doesn't work (throws an exception).
Any help is welcomed.
Luis
You can use @Value("${property-name}") from the application. properties if your class is annotated with @Configuration or @Component . You can make use of static method to get the value of the key passed as the parameter.
Another very simple way to read application properties is to use @Value annotation. Simply annotation the class field with @Value annotation providing the name of the property you want to read from application. properties file and class field variable will be assigned that value.
For reading property files in Groovy you can use the utility class ConfigSlurper and access the contained properties using GPath expressions. However, you have to be aware that ConfigSlurper
doesn't support standard Java property files. Normally the ConfigSlurper
will be used to read .groovy files that may be similar to a property file, but adhere to standard groovy notation, thus Strings are inside quotes and comments start with //
or are inside a /* */
block. So, to read a Java properties file you need to create a java.util.Properties
object and use that to create a ConfigSlurper
:
def props = new Properties() new File("message.properties").withInputStream { stream -> props.load(stream) } // accessing the property from Properties object using Groovy's map notation println "capacity.created=" + props["capacity.created"] def config = new ConfigSlurper().parse(props) // accessing the property from ConfigSlurper object using GPath expression println "capacity.created=" + config.capacity.created
If you only use the property file from within Groovy code you should use the Groovy notation variant directly.
def config = new ConfigSlurper().parse(new File("message.groovy").toURL())
This also gives you some nice advantages over standard property files, e.g. instead of
capacity.created="x" capacity.modified="y"
you can write
capacity { created="x" modified="y" }
I found a way to access to message properties directly wothout re-reading all the messages properties files (message_de.properties, message_fr.properties, etc.) It is is very easy.
message(code:"capacity.created")
and it works!
Luis
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