我在Ubuntu 16.04计算机上安装了源代码的dspace。我按照长篇说明中的步骤进行了操作：
https://wiki.duraspace.org/display/DSDOC6x/Installing+DSpace
当我尝试访问xmlui页面时，我在浏览器中看到一个白色屏幕，下面是日志中的一长串错误消息。我已经检查了，在src目录中，Context.java有方法getCurrentMode，它由第150行的CommunityBrowser.java调用。当我转到jspui时，我得到一个很好的页面，但是当我记录时会出现同样的错误in，虽然它在页面上显示错误消息，而不是像xmlui那样显示任何内容。
有人可以提出建议吗？
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:238)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.dspace.app.webui.filter.RegisteredOnlyFilter.doFilter(RegisteredOnlyFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoSuchMethodError: org.dspace.core.Context.getCurrentMode()Lorg/dspace/core/Context$Mode;
at org.dspace.app.xmlui.aspect.artifactbrowser.CommunityBrowser.getValidity(CommunityBrowser.java:150)
at sun.reflect.GeneratedMethodAccessor128.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
at com.sun.proxy.$Proxy402.getValidity(Unknown Source)
at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.getValidityForInternalPipeline(AbstractCachingProcessingPipeline.java:987)
at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupValidities(AbstractCachingProcessingPipeline.java:482)
at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:720)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:466)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.prepareInternal(AbstractProcessingPipeline.java:480)
at sun.reflect.GeneratedMethodAccessor127.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
at com.sun.proxy.$Proxy396.prepareInternal(Unknown Source)
at org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:292)
at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:148)
at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:62)
at org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:153)
at org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:183)
at org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:99)
at org.dspace.app.xmlui.cocoon.AspectGenerator.setup(AspectGenerator.java:81)
at sun.reflect.GeneratedMethodAccessor118.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
at com.sun.proxy.$Proxy397.setup(Unknown Source)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:343)
at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:710)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:466)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.prepareInternal(AbstractProcessingPipeline.java:480)
at sun.reflect.GeneratedMethodAccessor127.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
at com.sun.proxy.$Proxy396.prepareInternal(Unknown Source)
at org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:292)
at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:148)
at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:62)
at org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:153)
at org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:183)
at org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:99)
at org.dspace.app.xmlui.cocoon.AspectGenerator.setup(AspectGenerator.java:81)
at sun.reflect.GeneratedMethodAccessor118.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
at com.sun.proxy.$Proxy397.setup(Unknown Source)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:343)
at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:710)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:466)
at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.prepareInternal(AbstractProcessingPipeline.java:480)
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.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
at com.sun.proxy.$Proxy396.prepareInternal(Unknown Source)
at org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:292)
at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:148)
at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:62)
at org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:153)
at org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:183)
at org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:99)
还有更多茧错误......
答案 0 :(得分：0)
最初，在第一天，我在安装过程中犯了一些错误。例如，我第一次没有在dspace.cfg或local.cfg中设置我的数据库密码。我设置了密码，然后再次尝试而不删除所有内容。我以为它会覆盖并纠正任何错误。
所以在@Jens建议之后，我认为尝试查找冲突的jar文件对于使用与dspace一样多的jar文件的安装会非常困难。所以我第二天又从头开始尝试了。我下载了一个新文件，我从文件系统中删除了我的数据库和所有dspace文件。我开始了，从错误中吸取教训，我完成了安装步骤而没有出错，最终一切正常。我现在有一个可以修改的源代码安装。
再次感谢@Jens的指针。