Question

我试图在我的bean上获取方法的注释，但注释列表返回空。我就是这样做的。

@PostConstruct
public void findSensitiveAnnotations(){
    Map<String,Object> beans = applicationContext.getBeansWithAnnotation(RestController.class);
    for (Map.Entry<String, Object> entry : beans.entrySet()){
        for (int i=0 ; i<entry.getValue().getClass().getDeclaredMethods().length ; i++){
            System.out.println(entry.getValue().getClass().getDeclaredMethods()[i]);
            for (Annotation a : entry.getValue().getClass().getDeclaredMethods()[i].getAnnotations()){
                System.out.println(a.toString());
            }
        }
    }
}

第一个System.out.println()打印的内容如下：

public final org.springframework.http.ResponseEntity com.company.product.web.rest.AccountResource$$EnhancerBySpringCGLIB$$dff83dd3.sendResetEmail(java.lang.String,javax.servlet.http.HttpServletRequest)

但是第二个System.out.println()从未被调用，注释列表长度== 0。

以下是与sendResetEmail(@RequestParam String email, HttpServletRequest request)

对应的方法示例

@RequestMapping(value = "/reset/byEmail",
    method = RequestMethod.POST,
    produces = MediaType.APPLICATION_JSON_VALUE)
@Timed
@Sensitive
public ResponseEntity<String> sendResetEmail(@RequestParam String email, HttpServletRequest request) {...}

我的注释：

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Sensitive { }

Answer 1

getBeansWithAnnotation似乎不会返回真正的类名。

尝试做类似的事情：

Map<String,Object> beans = applicationContext.getBeansWithAnnotation(Service.class);
    for (Map.Entry<String, Object> entry : beans.entrySet()){
        Class<?> clazz = entry.getValue().getClass();
        //System.out.println(clazz.getName());
        String[] split = clazz.getName().split("\\$");
        String realClassName = split[0];
        //System.out.println(realClassName);
        Class<?> myClass = getClass().getClassLoader().loadClass(realClassName);
         Method[] methods = myClass.getDeclaredMethods();
        for(Method method: methods) {
            for (Annotation a : method.getAnnotations()){
                System.out.println(a.toString());
            }
        }
    }

Answer 2

我认为您需要拨打getDeclaredAnnotations()而不是getAnnotations()

获取bean方法的注释

2 个答案: