如何解決SolrException：加載類'dataimport.DataImportHandler'時出錯？

我只是按照這個DIHQuickStart，嘗試從mysql導入數據到solr。如何解決SolrException：加載類'dataimport.DataImportHandler'時出錯？

添加請求處理程序進入solrconfig.xml中

.... 

<!-- A request handler for demonstrating the elevator component --> 
    <requestHandler name="/elevate" class="solr.SearchHandler" startup="lazy"> 
    <lst name="defaults"> 
     <str name="echoParams">explicit</str> 
     <str name="df">text</str> 
    </lst> 
    <arr name="last-components"> 
     <str>elevator</str> 
    </arr> 
    </requestHandler> 

    <!-- Add by me--> 
    <requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport.DataImportHandler"> 
    <lst name="defaults"> 
     <str name="config">data-config.xml</str> 
    </lst> 
    </requestHandler>

我的數據-config.xml中

<dataConfig> 
    <dataSource type="JdbcDataSource" 
       driver="com.mysql.jdbc.Driver" 
       url="jdbc:mysql://localhost:3306/mydb" 
       user="root" 
       password="Pwd2011"/> 
    <document> 
    <entity name="subject" 
      query="select id,name,description from subject"> 
    </entity> 
    </document> 
</dataConfig>

添加刪除MySQL連接器的Java-5.1.17.jar成lib文件夾。

現在我啓動tomcat（這是我的solr servlet容器）。訪問本地主機：8180/Solr的，現在，我得到錯誤：

HTTP Status 500 - Severe errors in solr configuration. Check your log files for more detailed information on what may be wrong. If you want solr to continue after configuration errors, change: <abortOnConfigurationError>false</abortOnConfigurationError> in solr.xml ------------------------------------------------------------- org.apache.solr.common.SolrException: Error loading class 'org.apache.solr.handler.dataimport.DataImportHandler' at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:394) at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:419) at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:455) at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:159) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:563) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:483) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:335) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:219) at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:161) at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96) at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4624) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5281) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:866) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:842) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1581) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.ClassNotFoundException: org.apache.solr.handler.dataimport.DataImportHandler at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:423) at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789) at java.lang.ClassLoader.loadClass(ClassLoader.java:356) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:378) ... 27 more

我已經檢查的Solr和Tomcat的所有文件夾，沒有進一步登錄。

來源

2012-06-14 Tom

http://stackoverflow.com/questions/8225650/configure-dih-in-multicore-solr可能是這個職位會有所幫助。 – vuky

檢查您的類路徑，貌似DataImportHandler是不是在classpath

來源

2012-06-14 02:54:47 CharlieQ

你是對的，謝謝。 – Tom

進口處理程序應該放在哪裏？在solr主目錄中？對於其中的一個，我無法確定處理程序在我的solr下載中實際可用的位置。 –

如何解決SolrException：加載類'dataimport.DataImportHandler'時出錯？

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