static方法里用@Autowire或者@Resource注入的属性

冷不防 2022-05-15 15:52 228阅读 0赞

看代码先

@Component//必须有，使当前类成为一个bean对象。
    public class CheckUntil {
        @Autowired
        private ReadApplicationUntil readApplicationUntil;
        private static ReadApplicationUntil readApplicationUntils;
    
    
        @PostConstruct
        public void init() {
            ReadApplicationUntils = readApplicationUntil;
        }
        public static boolean checkSignatures(String signature, String timestamp, String nonce) {
    
            String[] strings = new String[]{nonce, ReadApplicationUntils.getToken(), timestamp};
            Arrays.sort(strings);
            StringBuffer stringBuffer = new StringBuffer();
            for (String string : strings) {
                stringBuffer.append(string);
            }
            if (SHA1.encode(stringBuffer.toString()).equals(signature)) {
                return true;
            }
            return false;
        }
    }

@Component要用到
    
    @Autowired
    private ReadApplicationUntil readApplicationUntil; 加载的类
    private static ReadApplicationUntil readApplicationUntils; static类

要用到

@PostConstruct//初始化的时候进行的操作注解
    public void init() {
        readApplicationUntils = readApplicationUntil;
        //这里需要把static类 和需要加载的类对调，就可以使用static加载readApplicationUntil对应的类方法了
         }

@PostConstruct注解作用：Spring允许开发者在受管Bean中使用它。当DI容器实例化当前受管Bean时，@PostConstruct注解的方法会被自动触发，从而完成一些初始化工作，