Spring @Value 无注释

Question

Instead of using @Value doing this:

@Service
public class MyService{
    @Value("${myValue}")
    private String myValue;
}

I need to get ${myValue} without annotation, and without reading the file again. How to do it?

Answer 1

You can get it from Environment :

@Autowired
private Environment env;
// ... 
env.getProperty("myValue");

Answer 2

One way to access Environment is through EnvironmentAware interface.

Example:

@Service
public class MyService implements EnvironmentAware{

    private String myValue;
    private Environment env;

    @Override
    public void setEnvironment(Environment environment) {
        this.env = environment;
    }

    public String getMyValue() {
        return env.getProperty("myValue");
    }
}