log4j导致栈溢出，报错内容如下：

java.lang.StackOverflowError
    at org.apache.logging.log4j.util.StackLocator.getCallerClass(StackLocator.java:125)
    at org.apache.logging.log4j.util.StackLocatorUtil.getCallerClass(StackLocatorUtil.java:55)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:42)
    at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:46)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358)
    at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:39)
    at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:37)
    at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger(Log4jLoggerFactory.java:29)
    at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:52)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358)
... many more

正常情况下，程序启动不可能出现栈溢出，出现栈溢出的问题一般都是递归问题或者循环调用导致，结合报错信息，可以判定是日志依赖包导致的问题。重点排查项目中的日志依赖包。

1.查看项目中是否同时依赖 log4j-over-slf4j.jar 和 slf4j-log4j12.jar

排除掉 log4j-over-slf4j.jar

2.查看项目中是否同时依赖 log4j-slf4j-impl.jar 和 log4j-to-slf4j.jar

排除掉 log4j-to-slf4j.jar

3.查看项目中是否同时依赖 jcl-over-slf4j.jar 和 slf4j-jcl.jar

排除掉 jcl-over-slf4j.jar

以上三组jar包会出导致循环调用问题，根据具体情况，排除掉即可。

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