问Solr建议(拼写检查)多项查询的动态字段选择

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<fieldType name="textSpell" class="solr.TextField">
 <analyzer>
   <tokenizer class="solr.StandardTokenizerFactory"/>
   <filter class="solr.LowerCaseFilterFactory"/>
 </analyzer>
</fieldType>
<field name="image_memo" type="text_general"/>
<field name="username" type="text_general"/>
<field name="image_memo" type="text_general"/>
<field name="image_text" type="text_general"/>
<!-- More fields included here -->
<field name="spell" type="textSpell" indexed="true" stored="true" multiValued="true"/>
<copyField source="*" dest="spell"/>

<searchComponent class="solr.SpellCheckComponent" name="suggest">
    <lst name="spellchecker">
        <str name="name">suggest</str>
        <str name="classname">org.apache.solr.spelling.suggest.Suggester</str>
        <str name="lookupImpl">org.apache.solr.spelling.suggest.tst.TSTLookup</str>
        <str name="field">spell</str>
        <str name="buildOnCommit">true</str>
    </lst>
</searchComponent>

<requestHandler class="org.apache.solr.handler.component.SearchHandler"
    name="/suggest">
    <lst name="defaults">
        <str name="spellcheck">true</str>
        <str name="spellcheck.dictionary">suggest</str>
        <str name="spellcheck.onlyMorePopular">true</str>
        <str name="spellcheck.count">6</str>
        <str name="spellcheck.collate">true</str>
        <str name="spellcheck.collateExtendedResults">true</str>
        <str name="spellcheck.collate">true</str>
        <str name="spellcheck.maxCollations">6</str>
        <str name="spellcheck.maxCollationTries">1000</str>
        <str name="spellcheck.extendedResults">true</str>
        <str name="spellcheck.collateParam.mm">100%</str>
    </lst>
    <arr name="components">
        <str>suggest</str>
        <str>query</str>
    </arr>
</requestHandler>