为什么application.yml中的user.name属性值错误？

Question

That is a simple problem. I hava a application.yml :

server:
  port: 852

user:
  name: Jack
  name1: Tom
  description: ${user.name}

And a User Java class:

@Component
@ConfigurationProperties(prefix = "user")
public class User {

    private String name;
    private String description;
    private String name1;

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getDescription() {
        return description;
    }
    public void setDescription(String description) {
        this.description = description;
    }
    public String getName1() {
        return name1;
    }
    public void setName1(String name1) {
        this.name1 = name1;
    }   
}

And finally there is a MVC Controller java class:

@RestController
public class HelloController {
    @Autowired User user;   

    @RequestMapping("/user")
    public String getUser() {
        return user.getName() + "--------" + user.getDescription() + "----" + user.getName1();
    }   
}

Ok,there is seem correct, but when entered "localhost:852/user" at browser address,I got wrong result as follow:

BG221726--------BG221726----Tom

Note that,"BG221726" is my computer name! What's wrong with my code????

Answer 1

You are using, effectively, user.name which is a special system property set by java. And when using the property resolving mechanism system properties take precedence over the ones loaded from property files, that one is taken.

To overcome use a different prefix.