[java] Spring @Value is not resolving to value from property file

I've had this working in some other project before, I am just re-doing the same thing but for some reason it's not working. The Spring @Value is not reading from property file, but instead it's taking the value literally

AppConfig.java

@Component
public class AppConfig
{
    @Value("${key.value1}")
    private String value;

    public String getValue()
    {
        return value;
    }
}

applicationContext.xml:

<context:component-scan
    base-package="com.test.config" />
<context:annotation-config />

<bean id="appConfigProperties"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="classpath:appconfig.properties" />
</bean>

appconfig.properties

key.value1=test value 1

In my controller, where I have:

@Autowired
private AppConfig appConfig;

The application starts just fine, but when I do

appConfig.getValue()

it returns

${key.value1}

It doesn't resolve to the value inside the properties file.

Thoughts?

Please note that if you have multiple application.properties files throughout your codebase, then try adding your value to the parent project's property file.

You can check your project's pom.xml file to identify what the parent project of your current project is.

Alternatively, try using environment.getProperty() instead of @Value.

I was using spring boot, and for me upgrading the version from 1.4.0.RELEASE to 1.5.6.RELEASE solved this issue.

In my case I was missing the curly braces. I had @Value("foo.bar") String value instead of the correct form @Value("${foo.bar}") String value

In my case, static fields will not be injected.

I also found the reason @value was not working is, @value requires PropertySourcesPlaceholderConfigurer instead of a PropertyPlaceholderConfigurer. i did the same changes and it worked for me, i am using spring 4.0.3 release. I configured this using below code in my configuration file -

@Bean 
public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}

Have a read of pedjaradenkovic's comment.

Further to the link he provides, the reason this isn't working is that @Value processing requires a PropertySourcesPlaceholderConfigurer instead of a PropertyPlaceholderConfigurer.

for Sprig-boot User both PropertyPlaceholderConfigurer and the new PropertySourcesPlaceholderConfigurer added in Spring 3.1. so it's straightforward to access properties file. just inject

Note: Make sure your property must not be Static

@Value("${key.value1}")
private String value;