配置Solr自动生成ID

schema.xml 配置

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

solrconfig.xml 配置

添加UUID处理器链

<updateRequestProcessorChain name="uuid">
    <processor class="solr.UUIDUpdateProcessorFactory">
        <str name="fieldName">id</str>
    </processor>
    <processor class="solr.RunUpdateProcessorFactory" />
</updateRequestProcessorChain>

修改/update requestHandler

<requestHandler name="/update" class="solr.UpdateRequestHandler">
    <lst name="defaults">
        <str name="update.chain">uuid</str>
    </lst>
</requestHandler>