spring boot configuration file (1)

1. Code structure

 

Configuration in the application.properties file

personal.province= JiangSu 
personal.city= NanJing

PersonalProperties.java content

 

@Component
public class PersonalProperties {


    @Value("${personal.province}")
    private String province;

    @Value("${personal.city}")
    private String city;

    public String getProvince() {
        return province;
    }

    public void setProvince(String province) {
        this.province = province;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }
}

 

DemoController.java content

@RestController
 public  class DemoController {

    @Autowired
    PersonalProperties personalProperties;
    
    @RequestMapping("/demo")
    private String demo() {
        return   personalProperties.getCity() + " ， "+ personalProperties.getProvince();
    }
}

Start DemoApplicatiuon.java

The webpage opens http://localhost:8080/demo

The page shows: NanJing , JiangSu