CODEWITHSUNDEEP
javaspringspring-mvc
Kilo Batata
Kilo Batata

Reputation: 81

Spring - @Value returns null

I have a properties file under /src/main/resources/ and I want to load data from it using Spring.

In my Spring-context.xml I have this :

<context:property-placeholder location="classpath:UserUtil.properties" />

and also have <context:component-scan base-package="com.myApp" />

and in my class I load it like :

@Value("${injectMeThis}")
private String injectMeThis;

but the value is always null

EDIT:

to check if the value, I use this : 

System.out.println(new myClass().getInjectMeThis());

Upvotes: 2

Views: 15468

Answers (2)

M. Deinum
M. Deinum

Reputation: 124526

System.out.println(new myClass().getInjectMeThis());

Spring will only parse @Value annotations on beans it knows. The code you use creates an instance of the class outside the scope of Spring and as such Spring will do nothing with it.

Assuming you have setup your application context correctly a @Value cannot be null as that will stop the correct startup of your application.

Your XML file contains a <context:component-scan /> assuming myClass is part of that package the easiest solution is to add @Component to myClass and then retrieve the instance from the context instead of creating a new instance.

Upvotes: 6

ajith george
ajith george

Reputation: 588

In your class, add class level annotation @PropertySource("UserUtil.properties"). This should solve the problem.

Upvotes: -1

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