java.lang.NoClassDefFoundError: org/apache/axiom/om/OMNode

Question

我说的有误java.lang.NoClassDefFoundError：org/apache/axiom/om/OMNode

在我的 java 网络应用程序中。顺便说一下，我实现了 servlet 来调用 wso2 数据服务中的数据服务。

这是完整的堆栈跟踪：

输入异常报告

消息实例化 servlet 时出错 class org.wso2.sample.RegisterpatientServlet

说明服务器遇到内部错误，无法完成此请求。

异常

javax.servlet.ServletException: Error instantiating servlet class org.wso2.sample.RegisterpatientServlet
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1082)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)


root cause 

java.lang.NoClassDefFoundError: org/apache/axiom/om/OMNode
    java.lang.Class.getDeclaredConstructors0(Native Method)
    java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    java.lang.Class.getConstructor0(Unknown Source)
    java.lang.Class.newInstance(Unknown Source)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1082)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)


root cause 

java.lang.ClassNotFoundException: org.apache.axiom.om.OMNode
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1891)
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1734)
    java.lang.Class.getDeclaredConstructors0(Native Method)
    java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    java.lang.Class.getConstructor0(Unknown Source)
    java.lang.Class.newInstance(Unknown Source)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1082)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Unknown Source)

谢谢，请帮忙！我很难过..

Answer 1

apache 公理库不在您的类路径中。如果您使用 maven，请确保它在您的 pom.xml 中。如果它在那里，请确保它具有运行时范围：<scope>runtime</scope>.

Answer 2

使此 class 可用于您的 Web 应用程序的一种简单方法是将 axiom.jar 文件放入您的 WEB-INF/lib 文件夹中。

Answer 3

将以下依赖项添加到您的项目中。（根据需要更改版本）

https://mvnrepository.com/artifact/org.apache.ws.commons.axiom/axiom-impl/1.2.6

java.lang.NoClassDefFoundError: org/apache/axiom/om/OMNode

java.lang.NoClassDefFoundError: org/apache/axiom/om/OMNode

java

servlets

wso2dss