Question

在我的项目中使用log4j 1.2.17时遇到“ StackOverflow”错误。

下面是错误的堆栈跟踪

    java.lang.StackOverflowError
        at org.apache.log4j.PatternLayout.format(PatternLayout.java:506)
        at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:310)
        at org.apache.log4j.WriterAppender.append(WriterAppender.java:162)
        at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
        at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
        at org.apache.log4j.Category.callAppenders(Category.java:206)
        at org.apache.log4j.Category.forcedLog(Category.java:391)
        at org.apache.log4j.Category.debug(Category.java:260)
        at com.java.oauth.client.JavaOauthWithCertificate.ReadRequiredConfigurationsToObtainToken(JavaOauthWithCertificate.java:42)
        at com.java.oauth.client.JavaOauthWithCertificate.getTokenByCertificate(JavaOauthWithCertificate.java:112)
        at com.test.sre.service.ServiceWrapperImpl.logMessage(ServiceWrapperImpl.java:54)
        at com.test.sre.logging.SREWebServiceAppender.append(SREWebServiceAppender.java:59)
        at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
        at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
        at org.apache.log4j.Category.callAppenders(Category.java:206)
        at org.apache.log4j.Category.forcedLog(Category.java:391)
        at org.apache.log4j.Category.debug(Category.java:260)
        at com.java.oauth.client.JavaOauthWithCertificate.ReadRequiredConfigurationsToObtainToken(JavaOauthWithCertificate.java:42)
        at com.java.oauth.client.JavaOauthWithCertificate.getTokenByCertificate(JavaOauthWithCertificate.java:112)

第42行的ReadRequiredConfigurationsToObtainToken内部的代码部分为

logger.debug（******验证已开始*******）

SRE Web服务附加程序正在将日志写入数据库。这将调用扩展的AppenderSkeleton类以实现自定义附加程序。当代码运行时，执行此时被卡住，并在一定时间后引发错误。

我已经尝试增加JVM的堆栈大小和堆大小，但是还没有运气。

下面是在属性文件中设置的log4j配置

log4j.rootLogger=DEBUG, A1, A2, A3

# service will ignore this output, but somebody manually running might be interested
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=[%d] %-5p %c %x - %m%n

# also log to a file - again probably not monitored in production but might be handy for debugging
log4j.appender.A2=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A2.File=C:\\EnergyTrading\\logs\\debug.log
log4j.appender.A2.DatePattern='.'yyyy-MM-dd
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.layout.ConversionPattern=[%d] %-5p %c %x - %m%n

#web service appender - directs log messages to 
log4j.appender.A3=com.test.sre.logging.SREWebServiceAppender

Any help on this error would be greatly helpful.

Answer 1

您的附加程序SREWebServiceAppender似乎正在使用JavaOauthWithCertificate，后者正在使用log4j进行日志记录。这样，日志记录将导致更多日志记录，并且总是以堆栈溢出结束。

您应该更新日志记录配置。您可以（从大多数到不太明智）：

不要在附加程序log4j.appender.A3=com.test.sre.logging.SREWebServiceAppender（https://logging.apache.org/log4j/1.2/faq.html#a2.9）中记录DEBUG消息
停止记录类com.java.oauth.client.JavaOauthWithCertificate.ReadRequiredConfigurationsToObtainToken中的DEBUG消息（我不知道这些类别是什么）
停止在根目录中记录DEBUG消息
删除附加程序log4j.appender.A3=com.test.sre.logging.SREWebServiceAppender

使用log4j 1.2.17时的Stackoverflow

1 个答案: