java - solr中如何从数据库中获取数据

Question

我想从数据库中获取数据以通过solr建立索引。我的 db-data-config.xml 是:

<dataConfig>
    <dataSource type="JdbcDataSource" driver="org.gjt.mm.mysql.Driver" url="jdbc:mysql://192.168.1.9:3306/angara" user="root" password="ampliflex" />
    <document>
                 <entity name="tdiamonds" query="select UID_PK from tdiamonds"
            <field column="UID_PK" name="name" />
          </entity>
    </document> </dataConfig>

我对 schema.xml 和 solrconfig.xml 进行了必要的更改，但仍然遇到一些异常。我不清楚这是什么意思，请给我一些建议。我得到的异常(exception)是:

org.apache.solr.handler.dataimport.DataImportHandlerException: Exception occurred while initializing context at org.apache.solr.handler.dataimport.DataImporter.loadDataConfig(DataImporter.java:190) at org.apache.solr.handler.dataimport.DataImporter.(DataImporter.java:101) at org.apache.solr.handler.dataimport.DataImportHandler.inform(DataImportHandler.java:113) at org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:486) at org.apache.solr.core.SolrCore.(SolrCore.java:588) at org.apache.solr.core.CoreContainer.create(CoreContainer.java:428) at org.apache.solr.core.CoreContainer.load(CoreContainer.java:278) at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117) at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:83) at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:99) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:594) at org.mortbay.jetty.servlet.Context.startContext(Context.java:139) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1218) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:500) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:147) at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:161) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:147) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:117) at org.mortbay.jetty.Server.doStart(Server.java:210) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40) at org.mortbay.xml.XmlConfiguration.main(XmlConfiguration.java:929) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.mortbay.start.Main.invokeMain(Main.java:183) at org.mortbay.start.Main.start(Main.java:497) at org.mortbay.start.Main.main(Main.java:115) Caused by: org.xml.sax.SAXParseException: Element type "entity" must be followed by either attribute specifications, ">" or "/>". at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source) at org.apache.solr.handler.dataimport.DataImporter.loadDataConfig(DataImporter.java:178)

Answer 1

由 org.xml.sax.SAXParseException 引起:元素类型“entity”后面必须跟有属性规范“">”或“/>”

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