我已经在服务器上安装并配置了 Solr4 和 tomcat6。它工作得很好，但是当我尝试构建 DIH（数据导入处理程序）时，它给了我一个错误，我无法解决。
我将以下代码添加到我的 solrconfig.xml 文件中
<requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport.DataImportHandler">
<lst name="defaults">
<str name="config">/path/to/data-config.xml</str>
</lst>
我的 data-config.xml 文件如下所示
<dataConfig>
<dataSource type="FileDataSource" />
<document>
<entity name="f" processor="FileListEntityProcessor" baseDir="/path/to/basedirectory/toxmlfiles/" fileName=".*xml" recursive="true" rootEntity="false" dataSource="null">
<field column="plainText" name="text"/>
</entity>
</document>
当我点击 localhost:8080/solr/ 时我在浏览器上遇到
的错误我的错误日志中的错误是
SEVERE: Unable to create core: collection1
org.apache.solr.common.SolrException: RequestHandler init failure
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:168)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:657)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:566)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:850)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:534)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:356)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:308)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:107)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.apache.solr.common.SolrException: Error loading class 'org.apache.solr.handler.dataimport.DataImportHandler'
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:436)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:469)
at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:540)
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:154)
... 34 more
Caused by: java.lang.ClassNotFoundException: org.apache.solr.handler.dataimport.DataImportHandler
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:615)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:420)
... 37 more
Jan 31, 2013 10:44:49 AM org.apache.solr.common.SolrException log
SEVERE: null:org.apache.solr.common.SolrException: RequestHandler init failure
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:168)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:657)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:566)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:850)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:534)
你能建议我如何解决这个错误？