英文:
OMLinkedListMetaFactory ClassCastException in a Tomcat Project on OpenSuse Server but not Locally
问题
我正在处理两个项目：一个是WebService，另一个包含业务逻辑。WebService项目依赖于业务逻辑项目。
为了运行该项目，我使用Tomcat 9.0.65和Java 11，使用Maven进行依赖管理。
当我在本地环境中运行项目时，一切正常。但是当我生成.war文件并部署到运行OpenSuse 12的服务器时，我遇到了以下错误：
错误似乎与Apache Axiom类相关。当我检查部署在服务器上的项目的库时，我发现Axiom库是重复的。这是因为WebService使用Axiom版本1.2.13，而业务逻辑项目使用版本1.4.0。当我手动删除1.4.0库时，项目在服务器上可以正常工作。
我尝试在本地环境中排除此库，但这样做会引发许多错误。我还尝试在两个项目中使用相同版本的Axiom（1.2.13和1.4.0），但由于与apache-axis版本不兼容的问题，无法在我的本地环境中工作。
这可能与Tomcat在Linux中处理依赖项有关吗？还有其他我可能忽视的问题吗？任何指导将不胜感激。
提前致谢。
英文:
I'm working with two projects: one is a webservice and the other contains the business logic. The webservice project has a dependency on the business logic project.
To run the project, I'm using Tomcat 9.0.65 and Java 11, with Maven for dependency management.
When I run the project in my local environment, everything works correctly. But when I generate the .war file and deploy it to a server running OpenSuse 12, I encounter the following error:
javax.servlet.ServletException: javax.servlet.ServletException: java.lang.ClassCastException: class org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory cannot be cast to class org.apache.axiom.om.OMMetaFactorySPI (org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory and org.apache.axiom.om.OMMetaFactorySPI are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @5b40ceb)
org.apache.axis2.transport.http.AxisServlet.init(AxisServlet.java:462)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
causa raíz
javax.servlet.ServletException: java.lang.ClassCastException: class org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory cannot be cast to class org.apache.axiom.om.OMMetaFactorySPI (org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory and org.apache.axiom.om.OMMetaFactorySPI are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @5b40ceb)
org.apache.axis2.transport.http.AxisServlet.initConfigContext(AxisServlet.java:591)
org.apache.axis2.transport.http.AxisServlet.init(AxisServlet.java:454)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
causa raíz
java.lang.ClassCastException: class org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory cannot be cast to class org.apache.axiom.om.OMMetaFactorySPI (org.apache.axiom.om.impl.llom.factory.OMLinkedListMetaFactory and org.apache.axiom.om.OMMetaFactorySPI are in unnamed module of loader org.apache.catalina.loader.ParallelWebappClassLoader @5b40ceb)
org.apache.axiom.om.OMXMLBuilderFactory.createOMBuilder(OMXMLBuilderFactory.java:165)
org.apache.axiom.om.OMXMLBuilderFactory.createOMBuilder(OMXMLBuilderFactory.java:145)
org.apache.axiom.om.OMXMLBuilderFactory.createOMBuilder(OMXMLBuilderFactory.java:116)
org.apache.axis2.util.XMLUtils.toOM(XMLUtils.java:590)
org.apache.axis2.util.XMLUtils.toOM(XMLUtils.java:575)
org.apache.axis2.deployment.DescriptionBuilder.buildOM(DescriptionBuilder.java:97)
org.apache.axis2.deployment.AxisConfigBuilder.populateConfig(AxisConfigBuilder.java:90)
org.apache.axis2.deployment.DeploymentEngine.populateAxisConfiguration(DeploymentEngine.java:857)
org.apache.axis2.deployment.WarBasedAxisConfigurator.<init>(WarBasedAxisConfigurator.java:156)
org.apache.axis2.transport.http.AxisServlet.initConfigContext(AxisServlet.java:584)
org.apache.axis2.transport.http.AxisServlet.init(AxisServlet.java:454)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:834)
The error seems to be related to the Apache Axiom class. When I check the libraries of the project deployed on the server, I see that the Axiom libraries are duplicated. This is because the webservice is using Axiom version 1.2.13, and the business logic project is using version 1.4.0. When I manually delete the 1.4.0 library, the project works on the server.
I've tried to exclude this library in my local environment, but doing so throws many errors. I also tried using the same version of Axiom (both 1.2.13 and 1.4.0) in both projects, but it doesn't work in my local environment due to incompatibility issues with the apache-axis version.
Could this be a problem with how Tomcat handles dependencies in Linux? Is there something else I might be overlooking? Any guidance would be greatly appreciated.
Thanks in advance.
答案1
得分: 0
我终于成功解决了我的问题，这个问题受到了三个关键因素的影响。
-
Axis2 和 Axiom 版本： 我不得不回退到较旧的 axis2 和 axiom 版本，以避免冲突。最终对我有效的版本如下：
<axiom.version>1.2.13</axiom.version> <axis2.version>1.6.2</axis2.version> -
库加载顺序： 在我的项目中，库加载的顺序也会影响事情。请确保根据需要检查并调整您自己项目中的加载顺序。
-
JDK 11 不兼容性： 我还遇到了一个问题，即
javax.xml.stream可以由多个模块访问。为了解决这个问题，我不得不从我的依赖项中排除以下库：<dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-api</artifactId> <version>${axiom.version}</version> <exclusions> <exclusion> <groupId>org.apache.james</groupId> <artifactId>apache-mime4j-core</artifactId> </exclusion> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId>geronimo-stax-api_1.0_spec</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-impl</artifactId> <version>${axiom.version}</version> <exclusions> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId>geronimo-stax-api_1.0_spec</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-dom</artifactId> <version>${axiom.version}</version> <exclusions> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.apache.axis2</groupId> <artifactId>axis2-adb</artifactId> <version>${axis2.version}</version> <exclusions> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> </exclusions> </dependency>
我希望这些信息能帮助其他面临类似问题的人。感谢大家提供的帮助。
英文:
I was finally able to solve my problem, which was being affected by three key factors.
-
Axis2 and Axiom Versions: I had to revert back to older versions of axis2 and axiom to avoid conflicts. The versions that finally worked for me are as follows:
<axiom.version>1.2.13</axiom.version> <axis2.version>1.6.2</axis2.version> -
Library Load Order: The order in which libraries were loading in my project was also affecting things. Be sure to check and adjust this as needed in your own project.
-
JDK 11 Incompatibilities: I also ran into an issue where
javax.xml.streamwas accessible by more than one module. To fix this, I had to exclude the following libraries from my dependencies:<dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-api</artifactId> <version>${axiom.version}</version> <exclusions> <exclusion> <groupId>org.apache.james</groupId> <artifactId>apache-mime4j-core</artifactId> </exclusion> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId>geronimo-stax-api_1.0_spec</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-impl</artifactId> <version>${axiom.version}</version> <exclusions> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId>geronimo-stax-api_1.0_spec</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.apache.ws.commons.axiom</groupId> <artifactId>axiom-dom</artifactId> <version>${axiom.version}</version> <exclusions> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.apache.axis2</groupId> <artifactId>axis2-adb</artifactId> <version>${axis2.version}</version> <exclusions> <exclusion> <groupId>org.apache.geronimo.specs</groupId> <artifactId> geronimo-activation_1.1_spec </artifactId> </exclusion> </exclusions> </dependency>
I hope this information can help someone else facing similar issues. Thanks to everyone for the help provided.
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