The proper way to set a property via command-line using -D is:
mvn -DpropertyName=propertyValue clean package
- If
propertyNamedoesn’t exist in thepom.xml, it will be set. - If
propertyNamealready exists in thepom.xml, its value will be overwritten by the one passed as argument via-D.
To send multiple variables, use multiple space delimited -Ds:
mvn -DpropA=valueA -DpropB=valueB -DpropC=valueC clean package
You can check more details about properties in Maven: The Complete Reference. More specifically, in section: 6.1. Maven Command Line Options/6.1.1. Defining Properties.
Example:
If you have in your pom.xml:
<properties>
<theme>myDefaultTheme</theme>
</properties>
Then mvn -Dtheme=halloween clean package would overwrite themes value during this execution, having the effect as if you had:
<properties>
<theme>halloween</theme>
</properties>