Question

我正在尝试使用面向方面编程和log4j配置来实现日志记录。我的要求是独特的，所以我坚持使用相同的技术。请在下面的代码中告诉我，为什么日志记录不起作用，即使我可以看到System.out.println给我适当的结果。

注意：log4j属性文件没有问题，如果独立调用它的工作正常。

package com.test.media.core.logger;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;
import org.springframework.util.StopWatch;

@Component
@Aspect
public class LoggingAspect {

    //private final Log log = LogFactory.getLog(this.getClass());
    private static final Log log = LogFactory.getLog(LoggingAspect.class);

    @Before("execution(* com.test.media.core.*.*.*(..))")
    public void logBefore(JoinPoint joinPoint) {
        Log log = LogFactory.getLog(joinPoint.getClass());
        System.out.println("logBefore is running " +joinPoint.getClass());
        log.debug("medthod  " + joinPoint.getSignature().getName()+"() is hijacked for execution");
        log.debug("******");
    }

    @After("execution(* com.test.media.core.*.*.*(..))")
    public void logAfter(JoinPoint joinPoint) {
        log.debug("medthod  " + joinPoint.getSignature().getName()+"() log After execution");
        log.debug("******");

    }

    @AfterReturning(pointcut = "execution(* com.test.media.core.*.*.*(..))", returning = "result")
    public void logAfterReturning(JoinPoint joinPoint, Object result) {

        log.debug("medthod  " + joinPoint.getSignature().getName()+"() log After Returning");
        log.debug("Method returned value is : " + result);
        log.debug("******");

    }

    @AfterThrowing(pointcut = "execution(* com.test.media.core.*.*.*(..))", throwing = "error")
    public void logAfterThrowing(JoinPoint joinPoint, Throwable error) {

        log.debug("medthod  " + joinPoint.getSignature().getName()+"() is thowing some exception");
        log.debug("Exception : " + error);
        log.debug("******");

    }

    @Around("execution(* com.test.media.core.*.*.*(..))")
    public Object logTimeMethod(ProceedingJoinPoint joinPoint) throws Throwable {

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

            Object retVal = joinPoint.proceed();

            stopWatch.stop();

            StringBuffer logMessage = new StringBuffer();
            logMessage.append(joinPoint.getTarget().getClass().getName());
            logMessage.append(".");
            logMessage.append(joinPoint.getSignature().getName());
            logMessage.append("(");
            // append args
            Object[] args = joinPoint.getArgs();
            for (int i = 0; i < args.length; i++) {
                logMessage.append(args[i]).append(",");
            }
            if (args.length > 0) {
                logMessage.deleteCharAt(logMessage.length() - 1);
            }

            logMessage.append(")");
            logMessage.append(" execution time: ");
            logMessage.append(stopWatch.getTotalTimeMillis());
            logMessage.append(" ms");
            log.debug(logMessage.toString());
            return retVal;
    }
}

如果有人对log4j属性文件有疑问，我也会添加它。

# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=D:\\logs\\tool\\tool.log
log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=1
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

# Root logger option
log4j.rootLogger=INFO, file, stdout

# Log everything. Good for troubleshooting
log4j.logger.org.hibernate=INFO

# Log all JDBC parameters
log4j.logger.org.hibernate.type=ALL

Answer 1

感谢所有建议。我得到了解决方案，基本上它不是java代码问题。由于垃圾桶条目，这种未知行为正在发生。工作pom条目如下：

    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>

    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.0</version>
    </dependency>

实现AOP方面时，日志记录不起作用？

1 个答案: