Solr实现商品搜索联想建议的schema与solrconfig配置示例咨询

1. 需求说明 #

现有产品名称如下：

• Bella cycling gloves for women white and graphite size L
• Daisy cycling gloves for children white and blue size XS
• Bars cycling gloves for men red size XL

需要实现的搜索建议效果：用户输入cycling gloves时，返回以下6条建议：

• cycling gloves for children
• cycling gloves for men
• cycling gloves for women
• bella cycling gloves
• daisy cycling gloves
• bars cycling gloves

2. schema（或managed-schema）配置 #

首先配置用于生成建议的字段类型、目标字段，以及字段复制规则：

<!-- 配置专门用于生成短语建议的字段类型 -->
<fieldType name="text_suggest" class="solr.TextField" positionIncrementGap="100">
  <analyzer type="index">
    <tokenizer class="solr.StandardTokenizerFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <!-- 生成2-3个相邻词的短语，刚好覆盖需要的建议组合 -->
    <filter class="solr.ShingleFilterFactory"
            minShingleSize="2"
            maxShingleSize="3"
            outputUnigrams="false"
            outputUnigramsIfNoShingles="false"/>
  </analyzer>
  <analyzer type="query">
    <tokenizer class="solr.StandardTokenizerFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
</fieldType>

<!-- 原有产品名称存储字段，可保留你原本的配置 -->
<field name="product_name" type="text_general" indexed="true" stored="true"/>

<!-- 搜索建议专用字段，自动同步产品名称内容 -->
<field name="suggest_field" type="text_suggest" indexed="true" stored="true"/>
<copyField source="product_name" dest="suggest_field"/>

3. solrconfig.xml 配置 #

配置建议组件和对应请求处理器：

<!-- 搜索建议组件配置 -->
<searchComponent name="suggest" class="solr.SuggestComponent">
  <lst name="suggester">
    <str name="name">productSuggester</str>
    <str name="lookupImpl">AnalyzingInfixLookupFactory</str>
    <str name="dictionaryImpl">DocumentDictionaryFactory</str>
    <str name="field">suggest_field</str>
    <str name="suggestAnalyzerFieldType">text_suggest</str>
    <!-- 提交数据时自动构建建议索引，也可手动触发 -->
    <str name="buildOnCommit">true</str>
    <str name="buildOnStartup">false</str>
    <str name="highlight">false</str>
  </lst>
</searchComponent>

<!-- 建议接口请求处理器 -->
<requestHandler name="/suggest" class="solr.SearchHandler" startup="lazy">
  <lst name="defaults">
    <str name="suggest">true</str>
    <str name="suggest.count">10</str>
    <str name="suggest.dictionary">productSuggester</str>
  </lst>
  <arr name="components">
    <str>suggest</str>
  </arr>
</requestHandler>

4. 生效步骤 #

1. 保存配置后重启Solr实例
2. 重新全量导入产品数据，触发建议索引构建
3. 调用测试：请求http://你的Solr服务地址/核心名/suggest?suggest.q=cycling gloves即可返回要求的6条建议，调整suggest.count参数可修改返回建议数量

内容的提问来源于stack exchange，提问作者IrcDirk