java - ojdbc8 jar 未加载到 Tomcat8 中

Question

我们的应用程序使用 Tomcat8(确切地说是 Tomcat 8.0.30)和 Java8。与 ojdbc7 数据库驱动程序以及所有其他 jar 一起出现，例如ucp.jar 和ons.jar 等与Oracle 数据库11g。如果我在我的 java 应用程序(即 Tomcat 中)启用“verbose:class”，它会显示从 ojdbc.jar 和 ucp.jar 文件加载的所有类。

现在我们已将数据库升级到 12c，因此我们将数据库驱动程序升级到 12.2 ojdbc8.jar。我替换了所有 jar(ojdbc、ucp、ons)，但 Tomcat 提示并给出错误 NoClassDefFound 异常。当我使用相同的详细“verbose:class”选项时，我看到没有从 ojdbc8.jar 加载任何类。 (ucp.jar 中的类确实被加载)。 jar 文件就位于 $CATALINA_HOME/lib 位置。但不确定为什么 ojdbc8.jar 没有被加载。

感谢您为解决此问题提供的任何帮助。

这是关于NoClassFoundException的异常

SEVERE: The required Server component failed to start so Tomcat is 
unable to start.
org.apache.catalina.LifecycleException: Failed to start component 
[StandardServer[43004]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.startup.Catalina.start(Catalina.java:625)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
Caused by: java.lang.ExceptionInInitializerError
at oracle.ucp.jdbc.PoolDataSourceImpl.allowSetter(PoolDataSourceImpl.java)
at oracle.ucp.jdbc.PoolDataSourceImpl.setUser(PoolDataSourceImpl.java:2089)
at oracle.ucp.jdbc.PoolDataSourceImpl.getObjectInstance(PoolDataSourceImpl.java:3945)
at com.intralinks.tomcat.ucp.UcpDataSourceFactory.getObjectInstance(UcpDataSourceFactory.java:68)
at org.apache.naming.factory.FactoryBase.getObjectInstance(FactoryBase.java:94)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:321)
at org.apache.naming.NamingContext.lookup(NamingContext.java:841)
at org.apache.naming.NamingContext.lookup(NamingContext.java:152)
at org.apache.naming.NamingContextBindingsEnumeration.nextElementInternal(NamingContextBindingsEnumeration.java:117)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:71)
at org.apache.naming.NamingContextBindingsEnumeration.next(NamingContextBindingsEnumeration.java:34)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:138)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:145)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.createMBeans(GlobalResourcesLifecycleListener.java:110)
at org.apache.catalina.mbeans.GlobalResourcesLifecycleListener.lifecycleEvent(GlobalResourcesLifecycleListener.java:82)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:402)
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:347)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:762)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 7 more
Caused by: java.lang.IllegalArgumentException: java.lang.ClassNotFoundException: oracle/jdbc/logging/annotations/Supports
at oracle.jdbc.logging.runtime.Features.<init>(Features.java:45)
at oracle.jdbc.logging.runtime.TraceControllerImpl.<clinit>(TraceControllerImpl.java:32)
... 28 more
Caused by: java.lang.ClassNotFoundException: oracle/jdbc/logging/annotations/Supports
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at oracle.jdbc.logging.runtime.Features.<init>(Features.java:33)
... 29 more

Answer 1

我想收回这个问题。看来 ojdbc7.jar 是在 tomcat 下硬编码的。因为当我将 ojdbc8.jar 重命名为 ojdbc7.jar 时，它就可以工作了。所以它必须在某个地方进行硬编码。我还没找到，但我会的。它不是 catalina.properties。