将Mysq数据导入solr索引库

本文的基础环境都是在centos 64bit，jdk1.7.79

将mysql 的jar 包添加到/home/hadoop/cloudsolr/solr-4.10.4/contrib/dataimporthandler/lib 下

修改对应的solrconfig.xml 文件我的core 是collection1，配置文件example/solr/collection1/conf/solrconfig.xml

在配置文件中添加了：

  <lib dir="/home/hadoop/cloudsolr/solr-4.10.4/dist/" regex="solr-dataimporthandler-\d.*\.jar" />
   <lib dir="/home/hadoop/cloudsolr/solr-4.10.4/contrib/dataimporthandler/lib/" regex=".*\.jar" />

还是在solrconfig配置文件中

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

vim db-data-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<dataConfig>
    <dataSource driver="com.mysql.jdbc.Driver"
                    url="jdbc:mysql://ip:3306/database"
                                    user="laiba"
                                     password="laiba123"
                                                                   <span style="color:#FF0000;"> batchSize="-1"</span>/><!-- 注意：mysql中一定要batchSize="-1" 否则会报异常-->
    <document>
            <entity name="bns_article" pk="id"
                            query="select id,title,author,cover,digest, content from bns_article"
                                            deltaImportQuery="select id,title, author, cover,digest, content from bns_article where id=‘${dataimporter.delta.ID}‘"
                                                            deltaQuery="select id,title, author, cover, digest,content from bns_article where  to_char(updatetime,‘yyyy-mm-dd hh24:mi:ss‘)> ‘${dataimporter.last_index_time}‘">
                                                                        <field column="id" name="id"/>
                                                                                    <field column="title" name="title"/>
                                                                                     <field column="author" name="author"/>
                                                                                     <field column="cover" name="cover"/>
                                                                                     <field column="digest" name="digest"/>
                                                                                     <field column="content" name="content"/>
                                                                                      </entity>
                                      </document>
                                       </dataConfig>

第三：配置schema.xml文件 添加一下字段（也就是要生成索引的数据库字段） (根据上一篇IK分词的设置，也可以把字段设置成需要分词的)

添加2个字段：

   <field name="cover" type="string" indexed="true" stored="true" multiValued="false"/>
   <field name="digest" type="string" indexed="true" stored="true" multiValued="false"/>

重启服务后出现错误提示：

HTTP ERROR 500

Problem accessing /solr/. Reason:

    {msg=SolrCore ‘collection1‘ is not available due to init failure: RequestHandler init failure,trace=org.apache.solr.common.SolrException: SolrCore ‘collection1‘ is not available due to init failure: RequestHandler init failure
    at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:745)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:347)
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:207)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
    at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
    at org.eclipse.jetty.server.Server.handle(Server.java:368)

问题原因：

   <!-- the dataimport requestHandler -->
       <requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport. DataImportHandler">
               <lst name="defaults">
              <str name="config">db-data-config.xml</str>
             </lst>
       </requestHandler> 将<requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport. DataImportHandler"> 换行了。

解决办法：
将<requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport. DataImportHandler"> 调整在一行即可

打开集群

导入数据

查询

参考地址：http://wiki.apache.org/solr/DIHQuickStart