无法在 Weblogic 12c (12.2.1) 中部署 CXF3.x JAX-RS 服务

Question

将使用 CXF3.x 构建的 JAX-RS 服务从 weblogic 12.1.3 升级到 12.2.1 后，我面临以下奇怪的问题

<03-ago-2017, 3:22:38,789 PM CEST> <Error> <HTTP> <BEA-101216> <Servlet: "JAX-RS/Jersey#1" failed to preload on startup in Web application: "sife".
A MultiException has 1 exceptions.  They are:
1. java.lang.LinkageError: ClassCastException: attempting to castzip:C:/Oracle/Middleware/Oracle_Home/user_projects/domains/base_domain/servers/AdminServer/tmp/_WL_user/sife/845176/war/WEB-INF/lib/javax.ws.rs-api-2.0.1.jar!/javax/ws/rs/ext/RuntimeDelegate.class to jar:file:/C:/Oracle/Middleware/Oracle_Home/oracle_common/modules/javax.ws.rs.javax.ws.rs-api.jar!/javax/ws/rs/ext/RuntimeDelegate.class

        at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1007)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.create(ServiceLocatorImpl.java:962)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1054)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1046)
        at org.glassfish.jersey.model.internal.CommonConfig.configureFeatures(CommonConfig.java:696)
        Truncated. see log file for complete stacktrace

请注意，我使用的是 CXF，而不是 Jersey，但似乎 Weblogic 正在尝试使用它（12.1.3 不会发生这种情况）。 我按照以下建议在配置文件中禁用了它： https : //jerometambo.github.io/blog/2016/12/13/How-to-use-CXF-3x-implementation-of-JAX-RS-20-REST- with-Weblogic-12c.html

使用默认配置，Weblogic 希望使用其内部实现（JAX-RS 2.0 和序列化）来部署 REST Web 服务（错误 500）：

META-INF/weblogic-application.xml

<weblogic-application  xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-application"
                       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                       xsi:schemaLocation="http://xmlns.oracle.com/weblogic/weblogic-application
                                           http://xmlns.oracle.com/weblogic/weblogic-application/1.8/weblogic-application.xsd">

    <prefer-application-packages>
        <package-name>javax.ws.rs.*</package-name>
        <package-name>com.fasterxml.jackson.*</package-name>
        <package-name>weblogic.jaxrs.api.client.*</package-name>
        <package-name>weblogic.jaxrs.internal.api.*</package-name>
        <package-name>weblogic.jaxrs.dispatch.*</package-name>
        <package-name>weblogic.jaxrs.monitoring.util.*</package-name>
    </prefer-application-packages>
</weblogic-application>

WEB-INF/weblogic.xml

<weblogic-web-app 
    xmlns="http://xmlns.oracle.com/weblogic/weblogic-web-app" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.0/weblogic-web-app.xsd">
        
    <container-descriptor>
        <prefer-application-packages>
            <package-name>javax.ws.rs.*</package-name>
            <package-name>com.fasterxml.jackson.*</package-name> 
        </prefer-application-packages>
    </container-descriptor> 
</weblogic-web-app>

我不知道这是我项目的特定问题还是网络逻辑问题。 我发现了类似这样和这样的问题，我尝试使用它们。

这些是我的依赖项（IVY 语法）

<dependency org="org.apache.cxf" name="cxf-rt-frontend-jaxrs" rev="3.1.10" conf="default" />
    <dependency org="org.apache.cxf" name="cxf-rt-rs-extension-providers" rev="3.1.10" conf="default" />
    <dependency org="org.apache.cxf" name="cxf-rt-transports-http" rev="3.1.10" conf="default" />
    <dependency org="com.fasterxml.jackson.jaxrs" name="jackson-jaxrs-json-provider" rev="2.6.6" conf="default" />

以及完整的堆栈跟踪

<03-ago-2017, 3:32:03,645 PM CEST> <Warning> <JAXRSIntegration> <BEA-2192510> <Cannot add Jersey servlet for application class org.apache.cxf.jaxrs.servlet.CXFNonSpringJaxrsServlet$ApplicationImpl because ApplicationPath annotation is not set on it.>
<03-ago-2017, 3:32:03,737 PM CEST> <Warning> <JAXRSIntegration> <BEA-2192511> <The list of resource packages: com.fasterxml.jackson.jaxrs.base;org.apache.cxf.jaxrs.provider;com.fasterxml.jackson.jaxrs.json;org.apache.cxf.jaxrs.provider.aegis;es.aragon.sife.server.filter;org.apache.cxf.jaxrs.provider.jsrjsonp;es.aragon.sife.keystore.api;es.aragon.sife.server.account.api;org.apache.cxf.jaxrs.provider.xmlbeans;org.apache.cxf.jaxrs.validation;es.aragon.sife.server.task.api;org.apache.cxf.jaxrs.provider.json;org.apache.cxf.jaxrs.provider.atom;es.aragon.sife.server.config.api>
ago 03, 2017 3:32:16 PM es.gob.afirma.signers.xml.Utils installXmlDSigProvider
<03-ago-2017, 3:32:20,581 PM CEST> <Error> <HTTP> <BEA-101216> <Servlet: "JAX-RS/Jersey#1" failed to preload on startup in Web application: "sife".
A MultiException has 1 exceptions.  They are:
1. java.lang.LinkageError: ClassCastException: attempting to castzip:C:/Oracle/Middleware/Oracle_Home/user_projects/domains/base_domain/servers/AdminServer/tmp/_WL_user/sife/845176/war/WEB-INF/lib/javax.ws.rs-api-2.0.1.jar!/javax/ws/rs/ext/RuntimeDelegate.class to jar:file:/C:/Oracle/Middleware/Oracle_Home/oracle_common/modules/javax.ws.rs.javax.ws.rs-api.jar!/javax/ws/rs/ext/RuntimeDelegate.class

        at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1007)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.create(ServiceLocatorImpl.java:962)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1054)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1046)
        at org.glassfish.jersey.model.internal.CommonConfig.configureFeatures(CommonConfig.java:696)
        Truncated. see log file for complete stacktrace
Caused By: java.lang.LinkageError: ClassCastException: attempting to castzip:C:/Oracle/Middleware/Oracle_Home/user_projects/domains/base_domain/servers/AdminServer/tmp/_WL_user/sife/845176/war/WEB-INF/lib/javax.ws.rs-api-2.0.1.jar!/javax/ws/rs/ext/RuntimeDelegate.class to jar:file:/C:/Oracle/Middleware/Oracle_Home/oracle_common/modules/javax.ws.rs.javax.ws.rs-api.jar!/javax/ws/rs/ext/RuntimeDelegate.class
        at javax.ws.rs.ext.RuntimeDelegate.findDelegate(RuntimeDelegate.java:146)
        at javax.ws.rs.ext.RuntimeDelegate.getInstance(RuntimeDelegate.java:120)
        at javax.ws.rs.core.MediaType.valueOf(MediaType.java:179)
        at org.glassfish.jersey.media.sse.SseFeature.<clinit>(SseFeature.java:62)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        Truncated. see log file for complete stacktrace
>
<03-ago-2017, 3:32:20,696 PM CEST> <Error> <Deployer> <BEA-149231> <Unable to set the activation state to true for the application "sife".
weblogic.application.ModuleException: java.lang.LinkageError: ClassCastException: attempting to castzip:C:/Oracle/Middleware/Oracle_Home/user_projects/domains/base_domain/servers/AdminServer/tmp/_WL_user/sife/845176/war/WEB-INF/lib/javax.ws.rs-api-2.0.1.jar!/javax/ws/rs/ext/RuntimeDelegate.class to jar:file:/C:/Oracle/Middleware/Oracle_Home/oracle_common/modules/javax.ws.rs.javax.ws.rs-api.jar!/javax/ws/rs/ext/RuntimeDelegate.class
        at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:140)
        at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
        at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:233)
        at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:228)
        at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
        Truncated. see log file for complete stacktrace
Caused By: java.lang.LinkageError: ClassCastException: attempting to castzip:C:/Oracle/Middleware/Oracle_Home/user_projects/domains/base_domain/servers/AdminServer/tmp/_WL_user/sife/845176/war/WEB-INF/lib/javax.ws.rs-api-2.0.1.jar!/javax/ws/rs/ext/RuntimeDelegate.class to jar:file:/C:/Oracle/Middleware/Oracle_Home/oracle_common/modules/javax.ws.rs.javax.ws.rs-api.jar!/javax/ws/rs/ext/RuntimeDelegate.class
        at javax.ws.rs.ext.RuntimeDelegate.findDelegate(RuntimeDelegate.java:146)
        at javax.ws.rs.ext.RuntimeDelegate.getInstance(RuntimeDelegate.java:120)
        at javax.ws.rs.core.MediaType.valueOf(MediaType.java:179)
        at org.glassfish.jersey.media.sse.SseFeature.<clinit>(SseFeature.java:62)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        Truncated. see log file for complete stacktrace
>
<03-ago-2017, 3:32:20,762 PM CEST> <Notice> <Log Management> <BEA-170027> <The server has successfully established a connection with the Domain level Diagnostic Service.>
<03-ago-2017, 3:32:20,931 PM CEST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to ADMIN.>
<03-ago-2017, 3:32:21,46 PM CEST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RESUMING.>
<03-ago-2017, 3:32:21,174 PM CEST> <Notice> <WebLogicServer> <BEA-000360> <The server started in RUNNING mode.>
<03-ago-2017, 3:32:21,186 PM CEST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RUNNING.>
<03-ago-2017, 3:32:22,710 PM CEST> <Error> <HTTP> <BEA-101216> <Servlet: "weblogic.management.rest.Application" failed to preload on startup in Web application: "wls-management-services.war".
A MultiException has 1 exceptions.  They are:
1. java.lang.NoClassDefFoundError: Could not initialize class org.glassfish.jersey.media.sse.SseFeature

        at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1007)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.create(ServiceLocatorImpl.java:962)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1054)
        at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1046)
        at org.glassfish.jersey.model.internal.CommonConfig.configureFeatures(CommonConfig.java:696)
        Truncated. see log file for complete stacktrace
Caused By: java.lang.NoClassDefFoundError: Could not initialize class org.glassfish.jersey.media.sse.SseFeature
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1350)
        Truncated. see log file for complete stacktrace
>
<03-ago-2017, 3:32:22,747 PM CEST> <Error> <J2EE> <BEA-160001> <Error deploying Internal Application: weblogic.application.ModuleException: java.lang.NoClassDefFoundError: Could not initialize class org.glassfish.jersey.media.sse.SseFeature
weblogic.application.utils.StateChangeException: weblogic.application.ModuleException: java.lang.NoClassDefFoundError: Could not initialize class org.glassfish.jersey.media.sse.SseFeature
        at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:58)
        at weblogic.application.services.BackgroundDeploymentManagerService$BackgroundDeployAction.run(BackgroundDeploymentManagerService.java:396)
        at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:666)
        at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:348)
        at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:333)
        Truncated. see log file for complete stacktrace
Caused By: weblogic.application.ModuleException: java.lang.NoClassDefFoundError: Could not initialize class org.glassfish.jersey.media.sse.SseFeature
        at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:140)
        at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
        at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:233)
        at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:228)
        at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
        Truncated. see log file for complete stacktrace
Caused By: java.lang.NoClassDefFoundError: Could not initialize class org.glassfish.jersey.media.sse.SseFeature
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1350)
        Truncated. see log file for complete stacktrace

---

变通方法

如果我使用默认的 JAX-RS 实现部署以前的其他 CXF 模块并删除WEB-INF/lib/javax.ws.rs-api-2.0.1.jar 。 也许 weblogic 做了某种内部初始化。

 myapp.ear
   init.war (JAX-RS with CXF and removing javax.ws.rs-api-2.0.1.jar)
   myapp.war (JAX-RS with CXF and weblogic configuration)

Answer 1

@pedrofb，这可能不能完全回答你的问题，但是，我曾经在 Tomcat 上遇到过类似的问题。 症状是相似的，问题并不是真的因为不同罐子中存在不同的类，即罐子阴影。 这是由于类加载器阴影。 在 Tomcat 中，类加载实际上是反向的，而不是通常的“询问您的父类加载器优先”类型的模型，如果应用程序类加载器可以找到一个类（它只从 WEB-INF/lib 或类加载），那么类加载器加载类。 现在，在您的情况下，我认为，由于 JAX-RS jar 存在于您的 WEB-INF/lib 中，因此它正在 Web 应用程序级别从那里加载。 然而，当同一个对象被传递给容器时，它试图将它转换为同一个类，但在容器级别由不同的类加载器加载。 不同的类加载器加载的类被认为是不同的； 这将是 ClassCastException 的原因。

这也可以解释为什么当您从 WEB-INF/lib 中删除 JAX-RS jar 时没有 ClassCastException。 此处的解决方法是有限的，您可以像之前那样从 WEB-INF/lib 中删除 JAX-RS jar。 （这可能有潜在问题，但您可以在非生产服务器中进行试验），用您想要的容器替换 JAX-RS jar。

正如我所说，这可能不会完全解决您的问题，但可能会指出问题的来源。 [正如我几年前注意到的那样，Weblogic 使用 tomcat 作为其 Web 容器核心（不确定它是否仍然相同）并更改了包名称，例如 com.bea.weblogic.org.apache.tomcat ...]。

希望这会有所帮助。