发布Mule JSON Logger到Anypoint Exchange时Java构建失败求助

我正尝试基于json-logger仓库将Mule JSON Logger发布到Anypoint Exchange，提供ORG ID并执行deploy-to-exchange.sh脚本后，持续遇到Java构建失败，堆栈跟踪如下：

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[WARNING] diagnostic: warning: Supported source version 'RELEASE_8' from annotation processor 'org.mule.runtime.ast.internal.extension.loader.ASTExtensionResourcesGeneratorAnnotationProcessor' less than -source '20'
[INFO] diagnostic: Note: Starting Resources generator for Extensions
[ERROR] error on execute: use -X to have details 
[DEBUG] 
java.lang.RuntimeException: java.lang.ExceptionInInitializerError
    at com.sun.tools.javac.api.JavacTaskImpl.invocationHelper (JavacTaskImpl.java:168)
    at com.sun.tools.javac.api.JavacTaskImpl.doCall (JavacTaskImpl.java:100)
    at com.sun.tools.javac.api.JavacTaskImpl.call (JavacTaskImpl.java:94)
    at org.bsc.maven.plugin.processor.AbstractAnnotationProcessorMojo.executeWithExceptionsHandled (AbstractAnnotationProcessorMojo.java:778)
    at org.bsc.maven.plugin.processor.AbstractAnnotationProcessorMojo.execute (AbstractAnnotationProcessorMojo.java:429)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:126)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:342)
    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:330)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:175)
    at org.apache.maven.lifecycle.internal.MojoExecutor.access$000 (MojoExecutor.java:76)
    at org.apache.maven.lifecycle.internal.MojoExecutor$1.run (MojoExecutor.java:163)
    at org.apache.maven.plugin.DefaultMojosExecutionStrategy.execute (DefaultMojosExecutionStrategy.java:39)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:160)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:105)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:73)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:53)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:118)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:261)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:173)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:101)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:827)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:272)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:195)
    at jdk.internal.reflect.DirectMethodHandleAccessor.invoke ..........

我机器上安装了JDK 20，之前用JDK 8时也遇到相同错误，请问是什么原因？

可能原因 #

• JDK版本不兼容：日志明确显示Mule的注解处理器仅支持JDK 8，但构建时实际使用的是JDK 20；切换JDK 8后仍报错，大概率是Maven环境未正确切换JDK版本，或者项目pom.xml中的JDK配置存在冲突。
• SLF4J绑定缺失：SLF4J警告无法加载StaticLoggerBinder，虽为警告，但可能导致注解处理器初始化异常，引发构建失败。
• Maven注解处理器插件不兼容：注解处理器执行时抛出ExceptionInInitializerError，可能是插件版本与Mule运行时的注解处理器不匹配。

解决步骤 #

• 强制指定JDK 8构建

  1. 确保JAVA_HOME环境变量指向JDK 8目录，且PATH优先使用该JDK的bin目录
  2. 在项目pom.xml中明确配置JDK版本：

     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <maven.compiler.release>8</maven.compiler.release>
     </properties>
     

• 补充SLF4J绑定依赖
  在pom.xml中添加SLF4J的简单实现依赖：

  <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-simple</artifactId>
      <version>1.7.36</version>
      <scope>provided</scope>
  </dependency>
  

• 更新Maven注解处理器插件
  检查项目中maven-processor-plugin的版本，升级到兼容版本（如4.5）：

  <plugin>
      <groupId>org.bsc.maven</groupId>
      <artifactId>maven-processor-plugin</artifactId>
      <version>4.5</version>
      <!-- 保留原有插件配置 -->
  </plugin>
  

• 清理Maven缓存
  执行命令强制更新依赖并清理缓存：

  mvn clean install -U
  

内容的提问来源于stack exchange，提问作者Andy