CXF在AIX+Weblogic環境下出現包衝突問題
專案中碰到一個問題，折騰了半天才終於解決，記錄一下：
環境：AIX作業系統
JDK1.7（IBM）
Weblogic（10.3.3）
Informix
專案架構是Struts2.3.15.1+Spring3.2.3.RELEASE+Hibernate4.2.3.Final，一個需求需要用到WebService，採用的是CXF的實現方式，本地啟動正常執行，在測試環境上用CXF做客戶端測試通過，但是CXF服務端卻提示異常，異常如下：
java.lang.VerifyError: JVMVRFY013 class loading constraint violated; class=com/sun/xml/bind/v2/runtime/unmarshaller/UnmarshallerImpl
at java.lang.J9VMInternals.verifyImpl(Native Method)
at java.lang.J9VMInternals.verify(J9VMInternals.java:93)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:170)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.createUnmarshaller(JAXBContextImpl.java:780)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.createUnmarshaller(JAXBContextImpl.java:142)
at org.apache.cxf.jaxb.io.DataReaderImpl.createUnmarshaller(DataReaderImpl.java:109)
at org.apache.cxf.jaxb.io.DataReaderImpl.read(DataReaderImpl.java:160)
at org.apache.cxf.binding.soap.interceptor.RPCInInterceptor.handleMessage(RPCInInterceptor.java:178)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239)
at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248)
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:206)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at com.cib.oams.base.servlet.AbstractAppSessionFilter.doHttpFilter(AbstractAppSessionFilter.java:332)
at com.cib.oams.base.servlet.HttpFilter.doFilter(HttpFilter.java:46)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
網上找了很多資料，最終確認為包衝突，根據提示Ljavax/xml/stream/XMLEventReader，認定為XMLEventReader的引用異常，原因是因為JDK1.7已經集成了該實現，但是使用CXF的Maven依賴還是會引入stax-api這個包，本機沒問題是因為本機用的是jetty，沒有新增weblogic.xml這個配置檔案，該配置檔案主要用於讓weblogic優先使用本專案自身的實現，由於優先使用了stax-api的實現導致呼叫IBM的JDK異常。通過maven排除（exclusion）掉後依然報這個錯！繼續尋找關聯包，最終找到poi裡引用了geronimo-stax-api_1.0_spec，同樣的Ljavax/xml/stream/XMLEventReader，果斷排除，重新部署後服務端通過測試~
希望能給大家一些思路上到幫助！