java - 将 log4j2 与 slf4j 一起使用 : java. lang.StackOverflowError

Question

所以我尝试遵循 this (非 Maven 实现)及其 web site 中的要求用于将 slf4j 添加到 log4j。并尝试使用此代码

public static void main(String[] args) {
        Logger logger = LoggerFactory.getLogger(Main.class);
        logger.info("test");
    }

并将以下内容添加到我的库

• log4j-api-2.3.jar
• log4j-core-2.3.jar
• log4j-sl4j-impl-2.3.jar
• log4j-to-sl4j-2.3.jar
• slf4j-api-1.7.12.jar

当我尝试运行它时，出现以下错误

Exception in thread "main" java.lang.StackOverflowError
    at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
    at java.util.concurrent.ConcurrentHashMap.containsKey(ConcurrentHashMap.java:964)
    at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:40)
    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:47)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:284)
    at org.apache.logging.slf4j.SLF4JLoggerContext.getLogger(SLF4JLoggerContext.java:41)
    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:47)
    at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:284)...

知道我哪里出错了吗？

Answer 1

您正在使用 log4j-slf4j-impl-2.3.jar 和 log4j-to-slf4j-2.3.jar 创建调用循环。

log4j-slf4j-impl-2.3.jar 是将 slf4j 调用发送到 log4j 的适配器的实现。

log4j-to-slf4j-2.3.jar 正在将 log4j 调用发送回 slf4j。 删除这个。