使用Spring AOP记录方法条目

Question

任何人都知道如何记录方法条目（包括参数值）并在跟踪级别使用Spring AOP和log4j退出。它应该能够从多个包中记录类。

Answer 1

您可以将 @Around（..）方面用于此目的：

@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 
             logger.error(errorMessageStringBuffer.toString(), e)

            throw ex;
        }

        return retVal;
    }
}

在此示例中，around会记录 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。

Answer 2

您可以使用Spring框架的PerformanceMonitorInterceptor来记录方法条目。Here是DZone的示例用法。