java - 使用 Spring AOP 记录方法条目

Question

这个问题已经有答案了:

Spring: Standard Logging aspect (interceptor) (2 个回答)

已关闭 6 年前。

任何人都知道如何在跟踪级别使用 Spring AOP 和 log4j 记录方法条目(包括参数值)并退出。它应该能够记录来自多个包的类。

Answer 1

您可以使用@Around(..)方面来达到这样的目的:

@Component
@Aspect
@Order(value=2)
public class LoggingAspect {

    @Around("execution(* com.blablabla.server..*.*(..))")
    public Object logMethod(ProceedingJoinPoint joinPoint) throws Throwable{
        final Logger logger = LoggerFactory.getLogger(joinPoint.getTarget().getClass().getName());
        Object retVal = null;

        try {
            StringBuffer startMessageStringBuffer = new StringBuffer();

            startMessageStringBuffer.append("Start method ");
            startMessageStringBuffer.append(joinPoint.getSignature().getName());
            startMessageStringBuffer.append("(");

            Object[] args = joinPoint.getArgs();
            for (int i = 0; i < args.length; i++) {
                startMessageStringBuffer.append(args[i]).append(",");
            }
            if (args.length > 0) {
                startMessageStringBuffer.deleteCharAt(startMessageStringBuffer.length() - 1);
            }

            startMessageStringBuffer.append(")");

            logger.trace(startMessageStringBuffer.toString());

            StopWatch stopWatch = new StopWatch();
            stopWatch.start();

            retVal = joinPoint.proceed();

            stopWatch.stop();

            StringBuffer endMessageStringBuffer = new StringBuffer();
            endMessageStringBuffer.append("Finish method ");
            endMessageStringBuffer.append(joinPoint.getSignature().getName());
            endMessageStringBuffer.append("(..); execution time: ");
            endMessageStringBuffer.append(stopWatch.getTotalTimeMillis());
            endMessageStringBuffer.append(" ms;");

            logger.trace(endMessageStringBuffer.toString());
        } catch (Throwable ex) {
            StringBuffer errorMessageStringBuffer = new StringBuffer();

             // Create error message with exception  
             logger.error(errorMessageStringBuffer.toString(), ex);    
            throw ex;
        }

        return retVal;
    }
}

在此示例中，方面记录了 com.blablabla.server 包下所有子包的所有方法调用。它还记录所有方法输入参数。