通过Docker将Nexus war部署到Wildfly时出现部署错误

部署过程中出现如下错误日志：

2024-02-07 14:52:45,828 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("deploy") failed - address: (["deployment" => "file.war"]) - failure description: {
    "WFLYCTL0080: Failed services" => {"jboss.deployment.unit.\"file.war\".INSTALL" => "WFLYSRV0153: Failed to process phase INSTALL of file\"file.war\"
    Caused by: java.lang.UnsupportedClassVersionError: Failed to link com/vaadin/flow/component/grid/ColumnGroup (Module \"deployment.file.war\" from Service Module Loader): com/vaadin/flow/component/grid/ColumnGroup has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0"},
    "WFLYCTL0412: Required services that are not installed:" => [
        "jboss.deployment.unit.\"file.war\".WeldStartService",
        "jboss.deployment.unit.\"file.war\".beanmanager"
    ],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => [
        "jboss.deployment.unit.\"file.war\".weld.weldClassIntrospector is missing [jboss.deployment.unit.\"file.war\".WeldStartService, jboss.deployment.unit.\"file.war\".beanmanager]",
        "jboss.deployment.unit.\"file.war\".batch.artifact.factory is missing [jboss.deployment.unit.\"file.war\".beanmanager]"
    ]
}

当前环境详情 #

• JDK版本：8
• Wildfly版本：15.0.1.Final
• MSSQL JDBC版本：12.4.2.jre8

解决方案 #

核心问题分析 #

错误日志中java.lang.UnsupportedClassVersionError是关键：com/vaadin/flow/component/grid/ColumnGroup的class文件版本为55.0（对应Java 11），但当前运行环境的JDK 8仅支持最高52.0的class版本，导致类加载失败，进而引发后续服务依赖缺失问题。

解决步骤 #

1. 升级JDK版本：
   将Wildfly运行环境的JDK从8升级到Java 11或更高版本，Wildfly 15.0.1.Final官方支持Java 8到Java 11，升级到Java 11可直接兼容目标类版本。

2. 适配War包编译版本：
   若无法升级JDK，需重新编译Nexus War包，编译时指定目标JDK为8（添加-target 1.8编译参数），确保生成的class文件版本与运行环境兼容。

3. 同步依赖版本：
   若升级JDK到11，需将MSSQL JDBC驱动更换为对应jre11版本（如mssql-jdbc-12.4.2.jre11.jar），避免依赖不兼容问题。

内容的提问来源于stack exchange，提问作者MSH