Spring 中自定义注解

定义注解

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface MyAnno {
   String param();//注解传递的参数，可不加
}

定义切面

@Component
@Aspect
public class MyInterceptor {

    @Before(value = "execution(public * com.hc.controller.*Controller.*()) && @annotation(myAnno)")
    public void proceed(MyAnno myAnno) throws Throwable {
        System.out.println("***********************");
        System.out.println(myAnno.param());
    }

}

定义Controller

在com.hc.controller包下面定义控制器：

@RestController
public class FunController {

    @RequestMapping("/fun1")
    public void fun1( ) {
        System.out.println("fun1");
    }

    @MyAnno(param = "ath")
    @RequestMapping("/fun2")
    public void fun2( ) {
        System.out.println("fun2");
    }
}