使用Spring AOP的日志方法条目

Question

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

Answer 1

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。

Answer 2

可以使用@Around（..）用于这样的目的方面：

@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; 
    } 
} 

在围绕方面记录此示例中，所有方法调用下com.blablabla.server包中的所有的子包。它还记录所有方法输入参数。