log4j“桥”和 RootLogger 类
我们正在尝试在 log4j“桥”。
为此，我：
- 从供应商的 JAR 中删除了所有以
org/apache/log4j/*开头的条目 - 添加了
log4j-1.2-api-2.17.1.jar和常规log4j-*-2.17.1.jar文件添加到 CLASSPATH
程序终止无法找到org/apache/log4j/spi/RootLogger。列出桥JAR的内容，我在org/apache/log4j/spi/下找到了几个类，但是RootLogger确实丢失了。
我该如何处理这个问题？
We're trying to force an old vendor-provided Java-program (a JAR) to use log4j2, with the help of the log4j "bridge".
To do this, I:
- Deleted all entries starting with
org/apache/log4j/*from the vendor's JAR - Added the
log4j-1.2-api-2.17.1.jarand the regularlog4j-*-2.17.1.jarfiles to CLASSPATH
The program dies unable to find the org/apache/log4j/spi/RootLogger. Listing the contents of the bridge JAR, I find several classes under the org/apache/log4j/spi/, but the RootLogger is, indeed, missing.
How do I deal with this?
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Log4j2 的最新版本 2.17.2 包含对 Log4j 1.x 桥的几十个修复（参见 变更日志）。
其中添加了 org.apache.log4j.RootLogger 类，以提供与 Log4j 1.x 的二进制兼容性。
警告：许多添加的类都是无操作的，只是防止
ClassNotFoundException作为您问题中的类。The newest version 2.17.2 of Log4j2 contains a couple of dozen of fixes to the Log4j 1.x bridge (cf. changelog).
Among them the
org.apache.log4j.RootLoggerclass has been added to provide binary compatibility with Log4j 1.x.Warning: many of the added classes are no-ops and just prevent
ClassNotFoundExceptions as the one in your question.