jboss EAP 7.3：未找到java.lang.类异常：#以一个或多个许可证授予Apache Software Foundation(ASF)-仅在独立模式下

我们有一个Web应用程序（war），它在域模式下（使用默认配置文件）成功部署到JBoss EAP 7.3，但在独立模式下（基于默认standalone.xml进行配置）部署失败，原因是：

14:47:40,342 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 88) MSC000001: Failed to start service jboss.deployment.unit."app.war".undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.unit."app.war".undertow-deployment: java.lang.RuntimeException: javax.el.ELException: Provider # Licensed to the Apache Software Foundation (ASF) under one or more not found
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:81)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
        at java.lang.Thread.run(Thread.java:748)
        at org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: java.lang.RuntimeException: javax.el.ELException: Provider # Licensed to the Apache Software Foundation (ASF) under one or more not found
        at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:254)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
        ... 8 more
Caused by: javax.el.ELException: Provider # Licensed to the Apache Software Foundation (ASF) under one or more not found
        at javax.el.FactoryFinder.newInstance(FactoryFinder.java:64)
        at javax.el.FactoryFinder.find(FactoryFinder.java:103)
        at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:140)
        at javax.el.ELUtil.getExpressionFactory(ELUtil.java:185)
        at javax.el.ELManager.getExpressionFactory(ELManager.java:38)
        at org.apache.jasper.runtime.JspApplicationContextImpl.<init>(JspApplicationContextImpl.java:49)
        at org.apache.jasper.runtime.JspApplicationContextImpl.getInstance(JspApplicationContextImpl.java:78)
        at org.apache.jasper.runtime.JspFactoryImpl.getJspApplicationContext(JspFactoryImpl.java:218)
        at org.wildfly.extension.undertow.deployment.JspInitializationListener.contextInitialized(JspInitializationListener.java:51)
        at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
        at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:217)
        at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:186)
        at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
        at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
        at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
        at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:252)
        ... 10 more
Caused by: java.lang.ClassNotFoundException: # Licensed to the Apache Software Foundation (ASF) under one or more from [Module "deployment.app.war" from Service Module Loader]
        at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:255)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:410)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
        at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
        at javax.el.FactoryFinder.newInstance(FactoryFinder.java:48)
        ... 29 more

14:47:40,351 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("deploy") failed - address: ([("deployment" => "app.war")]) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.deployment.unit.\"app.war\".undertow-deployment" => "java.lang.RuntimeException: javax.el.ELException: Provider # Licensed to the Apache Software Foundation (ASF) under one or more not found
    Caused by: java.lang.RuntimeException: javax.el.ELException: Provider # Licensed to the Apache Software Foundation (ASF) under one or more not found
    Caused by: javax.el.ELException: Provider # Licensed to the Apache Software Foundation (ASF) under one or more not found
    Caused by: java.lang.ClassNotFoundException: # Licensed to the Apache Software Foundation (ASF) under one or more from [Module \"deployment.app.war\" from Service Module Loader]"}}

War和应用程序配置在这两种情况下是相同的。
JBoss的配置在两种情况下都是尽可能接近的。在域模式下，它基于默认的概要文件，基本上只添加了一些资源。在独立模式下，它基于默认的standalone.xml，添加了相同的资源集。因此，从这个Angular 来看，我找不到行为差异的任何原因。
到目前为止，我们已经跟踪到tomcat-embed-el-9.0.39.jar，由于一些第三方依赖性，它包含在我们的war中。


# Licensed to the Apache Software Foundation (ASF) under one or more

# contributor license agreements.  See the NOTICE file distributed with

# this work for additional information regarding copyright ownership.

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License.  You may obtain a copy of the License at

# 

# http://www.apache.org/licenses/LICENSE-2.0

# 

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

org.apache.el.ExpressionFactoryImpl

其中的问题很明显是第一行被读取并作为实际条目（例如类名）处理，即使它只是一个注解。因此，它类似于以下影响EAP 6的旧问题：https://access.redhat.com/solutions/1270603（需要Red Hat登录）。
不过奇怪的是，这种情况只有在单机模式下才会发生，这算不算BUG？
注：我们在JBoss EAP 7.3.0和7.3.6中对此进行了测试，结果相同。

这是ExpressionFactory实现与ExpressionFactory提供程序文件（META-INF/services/javax.el.ExpressionFactory）之间的错误/不匹配。
ExpressionFactory.newInstance()方法需要使用JAR服务API来查找实现类的名称：
使用服务API（如JAR规范中所详细说明的）。如果存在名称为META-INF/services/javax.el.ExpressionFactory的资源，则其第一行（如果存在）将用作实现类的UTF-8编码名称。
此描述有些模糊/不一致：

它声明文件的第一行应该用作类名;
另一方面，它说它应该使用预期忽略注解的服务API。

在反编译我的ExpressionFactory实现时，我发现：

private static String getClassNameServices(final ClassLoader tccl) {
  InputStream is = null;
  if (tccl == null) {
    is = ClassLoader.getSystemResourceAsStream("META-INF/services/javax.el.ExpressionFactory");
  }
  else {
    is = tccl.getResourceAsStream("META-INF/services/javax.el.ExpressionFactory");
  }
  if (is != null) {
    String line = null;
    BufferedReader br = null;
    InputStreamReader isr = null;
    try {
      isr = new InputStreamReader(is, "UTF-8");
      br = new BufferedReader(isr);
      line = br.readLine();
      if (line != null && line.trim().length() > 0) {
        return line.trim();
      }
    }
    // [...]
  }
}

这个实现不忽略注解。我的META-INF/services/javax.el.ExpressionFactory (in jasper-el.jar)实际上看起来像：


# Licensed to the Apache Software Foundation (ASF) under one or more

# contributor license agreements.  See the NOTICE file distributed with

# this work for additional information regarding copyright ownership.

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License.  You may obtain a copy of the License at

# 

# http://www.apache.org/licenses/LICENSE-2.0

# 

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

org.apache.el.ExpressionFactoryImpl

因此，它尝试加载名为“# Licensed to the Apache Software Foundation（ASF）under one or more”的类，但失败。
相关错误是bug 64097，在commit 9ed78bcc80565292cd9a343f4e6d0c2db305494e中找到了修复程序。
一个（可怕的）快速修复方法是如下修补META-INF/services/javax.el.ExpressionFactory文件：

mkdir -p META-INF/services/
echo org.apache.el.ExpressionFactoryImpl > META-INF/services/javax.el.ExpressionFactory
7z d ./jasper-el.jar META-INF/services/javax.el.ExpressionFactory
jar uf ./jasper-el.jar META-INF/services/javax.el.ExpressionFactory

jboss EAP 7.3：未找到java.lang.类异常：#以一个或多个许可证授予Apache Software Foundation(ASF)-仅在独立模式下

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