我们可能会用各种应用服务部署我们的Java应用,比如Tomcat,是weblogic等.Tomcat和是可能会比较少遇到一些奇怪的问题,但是用weblogic部署项目则经常遇到一些比如包冲突问题,路径问题等奇怪但又常见的问题。
今天我就讲讲关于weblogic部署Java项目包冲突的问题。下面我举个例子:
当我在weblogic部署Java项目之后,启动没报任何错,没有异常。但是当我操作某个功能的时候页面就报错了:
后台报了这个错:
ServletException的根源。
. lang。LinkageError:装入器约束违反:装载机(weblogic的实例/跑龙套/类加载器/ChangeAwareClassLoader)
之前启动加载的不同类型的名字“javax/xml/命名空间/QName”
java.lang.ClassLoader.defineClass1(本机方法)
java.lang.ClassLoader.defineClass (ClassLoader.java: 763)
java.security.SecureClassLoader.defineClass (SecureClassLoader.java: 142)
weblogic.utils.classloaders.GenericClassLoader.defineClass (GenericClassLoader.java: 343)
weblogic.utils.classloaders.GenericClassLoader.findLocalClass (GenericClassLoader.java: 302)
weblogic.utils.classloaders.GenericClassLoader.findClass (GenericClassLoader.java: 270)
weblogic.utils.classloaders.ChangeAwareClassLoader.findClass (ChangeAwareClassLoader.java: 64)
在weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass (ChangeAwareClassLoader.java: 49)
. lang . class。getDeclaredMethods0(本地方法)
java.lang.Class.privateGetDeclaredMethods (Class.java: 2701)
java.lang.Class.privateGetMethodRecursive (Class.java: 3048)
java.lang.Class.getMethod0 (Class.java: 3018)
java.lang.Class.getMethod (Class.java: 1784)
org.apache.xmlbeans.XmlBeans.buildMethod (XmlBeans.java: 174)
org.apache.xmlbeans.XmlBeans.buildNoArgMethod (XmlBeans.java: 190)
org.apache.xmlbeans.XmlBeans.buildGetContextTypeLoaderMethod (XmlBeans.java: 200)
在org.apache.xmlbeans.XmlBeans灵活;clinit> (XmlBeans.java: 126)
在美元org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorkbook工厂。newInstance(未知源)
org.apache.poi.xssf.usermodel.XSSFWorkbook.onWorkbookCreate (XSSFWorkbook.java: 290)
在org.apache.poi.xssf.usermodel.XSSFWorkbook灵活;init> (XSSFWorkbook.java: 170)
com.kayak.web.base.util.export.ExportExcelXSSF.export (ExportExcelXSSF.java: 893)
com.kayak.web.base.action.ExportExcelAction.exportExcel (ExportExcelAction.java: 318)
在sun.reflect.NativeMethodAccessorImpl。invoke0(本地方法)
sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java: 62)
sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java: 43)
java.lang.reflect.Method.invoke (Method.java: 498)
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke (InvocableHandlerMethod.java: 221)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest (InvocableHandlerMethod.java: 137)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle (ServletInvocableHandlerMethod.java: 110)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod (RequestMappingHandlerAdapter.java: 777)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal (RequestMappingHandlerAdapter.java: 706)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle (AbstractHandlerMethodAdapter.java: 85)
org.springframework.web.servlet.DispatcherServlet.doDispatch (DispatcherServlet.java: 943)
org.springframework.web.servlet.DispatcherServlet.doService (DispatcherServlet.java: 877)
org.springframework.web.servlet.FrameworkServlet.processRequest (FrameworkServlet.java: 966)
org.springframework.web.servlet.FrameworkServlet.doPost (FrameworkServlet.java: 868)
javax.servlet.http.HttpServlet.service (HttpServlet.java: 727)
org.springframework.web.servlet.FrameworkServlet.service (FrameworkServlet.java: 842)
javax.servlet.http.HttpServlet.service (HttpServlet.java: 820)
weblogic.servlet.internal.StubSecurityHelper ServletServiceAction.run美元(StubSecurityHelper.java: 227)
weblogic.servlet.internal.StubSecurityHelper.invokeServlet (StubSecurityHelper.java: 125)
weblogic.servlet.internal.ServletStubImpl.execute (ServletStubImpl.java: 301)
在weblogic.servlet.internal.TailFilter.doFilter (TailFilter.java: 26)
weblogic.servlet.internal.FilterChainImpl.doFilter (FilterChainImpl.java: 60)
com.kayak.web.user.filter.LoginCertifyFilter.doFilter (LoginCertifyFilter.java: 125)
weblogic.servlet.internal.FilterChainImpl.doFilter (FilterChainImpl.java: 60)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal (CharacterEncodingFilter.java: 88)
org.springframework.web.filter.OncePerRequestFilter.doFilter (OncePerRequestFilter.java: 107)
weblogic.servlet.internal.FilterChainImpl.doFilter (FilterChainImpl.java: 60)
在com.kayak.web.base.filter.LocalRequestFilter.doFilter (LocalRequestFilter.java: 28)
weblogic.servlet.internal.FilterChainImpl.doFilter (FilterChainImpl.java: 60)
在weblogic.servlet.internal.RequestEventsFilter.doFilter (RequestEventsFilter.java: 27)
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