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

Question

所以我尝试在this中使用web site（非maven实现）和要求将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中

• log4j的火-2.3.jar
• log4j的核心-2.3.jar
• log4j的-sl4j-IMPL-2.3.jar
• log4j的到sl4j-2.3.jar
• SLF4J-火1.7.12.jar

当我尝试运行它时，我收到以下错误

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)...

知道我哪里错了吗？

Answer 1

你正在用log4j-slf4j-impl-2.3.jar和log4j-to-slf4j-2.3.jar创建一个调用循环。

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。