springboot加载配置文件属性

获取 properties 文件属性

1、在哪里使用哪里获取

@RestController
@RequestMapping("/message")
@PropertySource("classpath:commonConfig.properties")
public class MessageController {


    @Autowired
    public AsyncTask asyncTask;

        @Value("${com.name}")
        public String name;

        @Value("${com.password}")
        public String password;

    @GetMapping(value = "/msg")
    public String receiveMessage(){


        return name + ":" + password;
    }


}

2、定义公共类

• 定义

@Component
@Data
@PropertySource("classpath:commonConfig.properties") //默认的配置文件加载可以省略
//@ConfigurationProperties(prefix = "com") //添加可以省去属性@Value注解
public class CommonConfig{
    @Value("${com.name}")
        public String name;

        @Value("${com.password}")
        public String password;

• 调用

@RestController
@RequestMapping("/message")
public class MessageController {


    @Autowired
    public CommonConfig commonConfig;

      
    @GetMapping(value = "/msg")
    public String receiveMessage(){

        System.out.println(msg.toString());

        return commonConfig.getName() + ":" + commonConfig.getPassword();
    }


}