如何使用Spring AOP强制使用通用日志格式。 想要在每个记录器中附加一个字符串，例如服务名称

Question

Tried below example but it's not working with spring.Getting err in editor like "call pointcut designator isn't supported by Spring".

https://dzone.com/articles/enforcing-common-log-format

Any code example would be appreciated.

Answer 1

There are many ways to do this, here is 1.

1) Create an annotation to add to classes/methods that need logging added:

@Documented
@Target(ElementType.METHOD)
@Inherited
@Retention(RetentionPolicy.RUNTIME)
public @interface LogExecution {    
}

2) Create an aspect to do the logging:

@Aspect
@Component
public class LogAspect {

    private List<String> messages = new ArrayList<>();

    @Around("@annotation(hello.LogExecution)")
    public Object handelLogging(ProceedingJoinPoint joinPoint) throws Throwable {

        Object proceed = null;
        try {
           // log before
           proceed = joinPoint.proceed();
           // log after
        }
        catch (Exception e) {
           // log exception
           throw e;
        }
        return proceed;
    }    
}

Working example here

Answer 2

It sounds like you don't have Aspect J correctly configured.

See the answer to this question for the correct setup:

Spring + AspectJ weaving for java 8 using aspectj-maven-plugin

After that, spring should recognize your pointcuts

Answer 3

The canonical way to use AspectJ from within Spring applications as described by the manual is to use AspectJ load-time weaving (LTW) . It does not make sense to weave code into Spring or Java EE binaries and create new JARs etc., so IMO source or binary compile-time weaving is not an option if you want to target 3rd party code. Instead, a dynamic Java weaving agent as described in the manual chapter I linked to above.

Having said that, it was just a reply to the AOP-related suggestions I read about here. It would work the way I described it, but I am happy the OP has solved his problems by means of Mapped Diagnostic Context already.