Lombok @Log4j2 注释不适用于最新版本的 log4j (v2.15.0)

Question

我将 log4j 依赖项升级到最新的 2.15.0 版本，现在我的 Spring Boot 应用程序在启动时抛出错误

Exception in thread "main" java.lang.NoSuchFieldError: EMPTY_BYTE_ARRAY
    at org.apache.logging.log4j.core.config.ConfigurationSource.<clinit>(ConfigurationSource.java:56)
    at org.apache.logging.log4j.core.config.NullConfiguration.<init>(NullConfiguration.java:32)
    at org.apache.logging.log4j.core.LoggerContext.<clinit>(LoggerContext.java:85)
    at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.createContext(ClassLoaderContextSelector.java:254)
    at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:218)
    at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:136)
    at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:123)
    at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:117)
    at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:150)
    at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
    at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194)
    at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:581)
    at foo.bar.org.MyApp.<clinit>(MyApp.java:13)

这是我的主要课程

@Log4j2
@SpringBootApplication(exclude={DataSourceAutoConfiguration.class})
public class MyApp {

  public static void main(String[] args) {
    SpringApplication.run(MyApp.class, args);
  }
}

Answer 1

如果您的 pom.xml 中有以下内容：

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>2.15.0</version>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.15.0</version>
</dependency>

确保两者具有相同的版本。我忘记了它（留下了旧版本）并看到了同样的错误。

Answer 2

1. 设置 log4j2.version 属性：

<properties>
    <log4j2.version>2.15.0</log4j2.version>
</properties>

2. 修复 pom.xml：

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>${log4j2.version}</version>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>${log4j2.version}</version>
</dependency>