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当我尝试使用 DIH 从 mysql 表中导入数据时，出现此错误。

HTTP ERROR 500

Problem accessing /solr/dataimport. Reason:

    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:389)
        at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:425)
        at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:461)
        at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:157)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:565)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:463)
        at org.apache.solr.core.CoreContainer.load(CoreContainer.java:316)
        at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:133)
        at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:94)
        at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713)
        at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
        at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282)
        at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
        at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
        at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
        at org.mortbay.jetty.Server.doStart(Server.java:224)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
        at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:985)
        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.mortbay.start.Main.invokeMain(Main.java:194)
        at org.mortbay.start.Main.start(Main.java:534)
        at org.mortbay.start.Main.start(Main.java:441)
        at org.mortbay.start.Main.main(Main.java:119)
    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:373)
        ... 33 more

这是我的 schema.xml 代码

<fields>
    <field name="brands_test_id" type="string" indexed="true" stored="true" required="true" />
    <field name="categories_test_id" type="string" indexed="true" stored="true" required="true" />
  </fields>

data-config.xml 有以下代码：

<dataConfig>
    <dataSource type="JdbcDataSource" 
                driver="com.mysql.jdbc.Driver"
                url="jdbc:mysql://localhost/Webpage"      
                user="test" 
                password="test123"/>
    <document name="Products">
        <entity name="products" query="select brands_test_id,categories_test_id from products"
            <field name="brands_test_id" column="brands_test_id"
            <field name="categories_test_id" column="categories_test_id"
            <entity name="brands_test" query="select name from brands_test where id='$products.brands_test_id' "
                    <field name="brands_test" column="brands_test"/>
            </entity>
            <entity name="categories_test" query="select name from categories_test where id='$products.categories_test_id' "
                    <field name="categories_test" column="categories_test"/>
            </entity>
        </entity>
    </document>
</dataConfig>

这是 solrconfig.xml 文件

<lib dir="../../../dist/" regex="apache-solr-dataimporthandler-\d.*\.jar" />

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

我下载了 mysql-connector-java-3.1.14.tar.gz 并将其解压缩并复制到 lib 目录。Ami正确定义文件目录？请帮我解决这个问题。

4

1 回答 1

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您遇到的错误与您的代码无关，只是 Solr 不再将 DIH jar 显式捆绑在主 Web 应用程序存档中。幸运的是，它很容易克服，请参阅：Solr 4.1 DataImportHandler ClassNotFoundException

于 2013-04-29T01:38:57.547 回答