Solr 4.3.0 配置Data import handler时出错
启动solr的时候，居然出现了如下的错误：org.apache.solr.common.SolrException: RequestHandler init failure
at org.apache.solr.core.SolrCore.(SolrCore.java:794)
at org.apache.solr.core.SolrCore.(SolrCore.java:607)
at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:1003)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1033)
at org.apache.solr.core.CoreContainer$3.call(CoreContainer.java:629)
at org.apache.solr.core.CoreContainer$3.call(CoreContainer.java:624)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.solr.common.SolrException: RequestHandler init failure
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:168)
at org.apache.solr.core.SolrCore.(SolrCore.java:731)
... 13 more
Caused by: org.apache.solr.common.SolrException: Error loading class 'org.apache.solr.handler.dataimport.DataImportHandle
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:438)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:507)
at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:581)
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:154)
... 14 more
Caused by: java.lang.ClassNotFoundException: org.apache.solr.handler.dataimport.DataImportHandler
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.net.FactoryURLClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:422)
... 17 more
2013-3-5 12:54:31 org.apache.solr.common.SolrException log
严重: null:org.apache.solr.common.SolrException: Unable to create core: core0
at org.apache.solr.core.CoreContainer.recordAndThrow(CoreContainer.java:1654)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1039)
at org.apache.solr.core.CoreContainer$3.call(CoreContainer.java:629)
at org.apache.solr.core.CoreContainer$3.call(CoreContainer.java:624)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.solr.common.SolrException: RequestHandler init failure
at org.apache.solr.core.SolrCore.(SolrCore.java:794)
at org.apache.solr.core.SolrCore.(SolrCore.java:607)
at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:1003)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1033)
... 10 more
Caused by: org.apache.solr.common.SolrException: RequestHandler init failure
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:168)
at org.apache.solr.core.SolrCore.(SolrCore.java:731)
... 13 more
Caused by: org.apache.solr.common.SolrException: Error loading class 'org.apache.solr.handler.dataimport.DataImportHandle
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:438)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:507)
at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:581)
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:154)
... 14 more
Caused by: java.lang.ClassNotFoundException: org.apache.solr.handler.dataimport.DataImportHandler
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.net.FactoryURLClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:422)
... 17 more
原因是 solr-dataimporthandler-4.3.0.jar 没找到，可能是配置位置有问题，直接将 solr-dataimporthandler-4.3.0.jar 复制到 solr\WEB-INF\lib 即可
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