Solr6.6.0 自动生成ID

1、配置managed-schema

为id添加uuid字段类型

<fieldType name="uuid" class="solr.UUIDField" indexed="true" />
<field name="id" type="uuid" indexed="true" stored="true" required="true" multiValued="false" />

2、配置solrconfig.xml文件

<!-- 添加更新策略配置，调用Solr中的UUIDUpdateProcessorFactory生成全局惟一的UUID -->
     <updateRequestProcessorChain name="uuid">
     <processor class="solr.UUIDUpdateProcessorFactory">  
           <str name="fieldName">id</str>
     </processor>
     <processor class="solr.LogUpdateProcessorFactory" />
     <processor class="solr.DistributedUpdateProcessorFactory" />
     <processor class="solr.RunUpdateProcessorFactory" />
    </updateRequestProcessorChain>

配置requestHandler，保证dataimport和update操做均可以自动生成UUID

<requestHandler name="/dataimport" class="solr.DataImportHandler">
    <lst name="defaults">
      <str name="config">db-data-config.xml</str>
      <str name="update.chain">uuid</str> 
    </lst>
  </requestHandler>

<requestHandler name="/update/extract" 
                  startup="lazy"
                  class="solr.extraction.ExtractingRequestHandler" >
    <lst name="defaults">
      <str name="lowernames">true</str>
      <str name="uprefix">ignored_</str>

      <!-- capture link hrefs but ignore div attributes -->
      <str name="captureAttr">true</str>
      <str name="fmap.a">links</str>
      <str name="fmap.div">ignored_</str>
     <str name="update.chain">uuid</str>
    </lst>
  </requestHandler>

配置完以后，solr就能够自动生成ID，在进行索引的时候，就不须要指定ID了。