Usage of '${spring.version}'

Question

When I use:

<dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-context</artifactId>     <version>${spring.version}</version> </dependency> 

on the console I get the following error message:

'dependencies.dependency.version' for org.springframework:spring-context:jar must be a valid version but is '${spring.version}'. @ line 40, column 19

Do I have to do a manually configuration of Maven? I've seen this kind of dependency but there is no explanation how to do it properly.

Answer 1

${spring.version} is a placeholder, you need to configure its actual value in <properties> block:

<properties>     <spring.version>3.0.5.RELEASE</spring.version> </properties> 

Answer 2

I don't really agree with the first answer.

Using ${spring.version} is a convenient way to config version.

In xml file, you need to set property like follow:

<properties>     <spring.version>4.3.3.RELEASE</spring.version> </properties> 

Then it will work.