spring boot 获取属性文件

类中添加@Component标签才会被初始化

1.使用value标签

    @Value("${url}")
    private String url;    

 

 

2.使用Environment

    @Autowired
    private Environment env;

 

3.静态方法中获取

    private static String url;
    
    @Value("${url}")
    public void setUrl(String url) {
        this.url = url;
    }

 

4.静态方法获取

    private static Environment env;
    
    @Autowired
    public void setEnv(Environment env) {
        this.env = env;
    }