Spring AspectJ 从 ProceedingJoinPoint 获取方法注解
Spring AspectJ get method annotation from ProceedingJoinPoint
我有一个方面可以处理所有具有自定义注释的方法。
注释有一个枚举参数,我必须在方面获取值:
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Monitored {
MonitorSystem monitorSystem();
}
我的情况与 question 非常相似,接受的答案适用于 Spring 未实现接口的 bean。
看点:
@Aspect
@Component
public class MonitorAspect {
@Around("@annotation(com.company.project.monitor.aspect.Monitored)")
public Object monitor(ProceedingJoinPoint pjp) throws Throwable {
MethodSignature signature = (MethodSignature) pjp.getSignature();
MonitorSystem monitorSystem = signature.getMethod().getAnnotation(Monitored.class).monitorSystem();
...
}
}
但是如果用@Monitored
注解的Springbean(只注解了实现class)实现了一个接口——pjp.getSignature()
returns接口的签名,它没有注释。
这没问题:
@Component
public class SomeBean {
@Monitored(monitorSystem=MonitorSystem.ABC)
public String someMethod(String name){}
}
这不起作用 - pjp.getSignature() 获取接口的签名。
@Component
public class SomeBeanImpl implements SomeBeanInterface {
@Monitored(monitorSystem=MonitorSystem.ABC)
public String someMethod(String name){}
}
有没有办法从ProceedingJoinPoint获取实现方法的签名?
设法做到了:
@Aspect
@Component
public class MonitorAspect {
@Around("@annotation(com.company.project.monitor.aspect.Monitored)")
public Object monitor(ProceedingJoinPoint pjp) throws Throwable {
MethodSignature signature = (MethodSignature) pjp.getSignature();
Method method = pjp.getTarget()
.getClass()
.getMethod(signature.getMethod().getName(),
signature.getMethod().getParameterTypes());
Monitored monitored = method.getAnnotation(Monitored.class);
...
}
}
如果您有自定义注释,那么最好的方法是:
@Around("@annotation(monitored)")
public Object monitor(ProceedingJoinPoint pjp, Monitored monitored ) throws
Throwable {
MonitorSystem monitorSystem = monitored.monitorSystem();
//your work .......
pjp.proceed();
}
我有一个方面可以处理所有具有自定义注释的方法。
注释有一个枚举参数,我必须在方面获取值:
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Monitored {
MonitorSystem monitorSystem();
}
我的情况与 question 非常相似,接受的答案适用于 Spring 未实现接口的 bean。
看点:
@Aspect
@Component
public class MonitorAspect {
@Around("@annotation(com.company.project.monitor.aspect.Monitored)")
public Object monitor(ProceedingJoinPoint pjp) throws Throwable {
MethodSignature signature = (MethodSignature) pjp.getSignature();
MonitorSystem monitorSystem = signature.getMethod().getAnnotation(Monitored.class).monitorSystem();
...
}
}
但是如果用@Monitored
注解的Springbean(只注解了实现class)实现了一个接口——pjp.getSignature()
returns接口的签名,它没有注释。
这没问题:
@Component
public class SomeBean {
@Monitored(monitorSystem=MonitorSystem.ABC)
public String someMethod(String name){}
}
这不起作用 - pjp.getSignature() 获取接口的签名。
@Component
public class SomeBeanImpl implements SomeBeanInterface {
@Monitored(monitorSystem=MonitorSystem.ABC)
public String someMethod(String name){}
}
有没有办法从ProceedingJoinPoint获取实现方法的签名?
设法做到了:
@Aspect
@Component
public class MonitorAspect {
@Around("@annotation(com.company.project.monitor.aspect.Monitored)")
public Object monitor(ProceedingJoinPoint pjp) throws Throwable {
MethodSignature signature = (MethodSignature) pjp.getSignature();
Method method = pjp.getTarget()
.getClass()
.getMethod(signature.getMethod().getName(),
signature.getMethod().getParameterTypes());
Monitored monitored = method.getAnnotation(Monitored.class);
...
}
}
如果您有自定义注释,那么最好的方法是:
@Around("@annotation(monitored)")
public Object monitor(ProceedingJoinPoint pjp, Monitored monitored ) throws
Throwable {
MonitorSystem monitorSystem = monitored.monitorSystem();
//your work .......
pjp.proceed();
}