Solr 搜索 8.4.1 找不到结果
Solr Search 8.4.1 Not Finding Results
我在获取 Solr 搜索设置时遇到问题。我是 Solr 的新手，但我认为问题出在 solrconfig.xml 文件上。但如果我错了请告诉我！
问题是，如果我在 Solr 管理页面的 q 字段中键入搜索，我会得到 0 个结果。但是，如果我键入 *"query"* 之类的通配符查询，我将返回数据库中的所有文档。这是我的 solrconfig.xml 文件：
<?xml version="1.0" encoding="UTF-8"?>
<config>
<luceneMatchVersion>8.4.1</luceneMatchVersion>
<dataDir>${solr.data.dir:}</dataDir>
<directoryFactory name="DirectoryFactory"
class="${solr.directoryFactory:solr.NRTCachingDirectoryFactory}"/>
<codecFactory class="solr.SchemaCodecFactory"/>
<schemaFactory class="ClassicIndexSchemaFactory"/>
<updateHandler class="solr.DirectUpdateHandler2">
<updateLog>
<str name="dir">${solr.ulog.dir:}</str>
<int name="numVersionBuckets">${solr.ulog.numVersionBuckets:65536}</int>
</updateLog>
<autoCommit>
<maxTime>${solr.autoCommit.maxTime:15000}</maxTime>
<openSearcher>false</openSearcher>
</autoCommit>
<autoSoftCommit>
<maxTime>${solr.autoSoftCommit.maxTime:-1}</maxTime>
</autoSoftCommit>
</updateHandler>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Query section - these settings control query time things like caches
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<query>
<maxBooleanClauses>${solr.max.booleanClauses:1024}</maxBooleanClauses>
<filterCache class="solr.FastLRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<queryResultCache class="solr.LRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<documentCache class="solr.LRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<!-- custom cache currently used by block join -->
<cache name="perSegFilter"
class="solr.search.LRUCache"
size="10"
initialSize="0"
autowarmCount="10"
regenerator="solr.NoOpRegenerator" />
<enableLazyFieldLoading>true</enableLazyFieldLoading>
<queryResultWindowSize>20</queryResultWindowSize>
<queryResultMaxDocsCached>200</queryResultMaxDocsCached>
<listener event="newSearcher" class="solr.QuerySenderListener">
<arr name="queries">
</arr>
</listener>
<listener event="firstSearcher" class="solr.QuerySenderListener">
<arr name="queries">
</arr>
</listener>
<useColdSearcher>false</useColdSearcher>
</query>
<requestDispatcher>
<httpCaching never304="true" />
</requestDispatcher>
<requestHandler name="/select" class="solr.SearchHandler">
<!-- <lst name="defaults"> -->
<!-- <str name="echoParams">explicit</str> -->
<!-- <int name="rows">10</int> -->
<!-- </lst> -->
</requestHandler>
<requestHandler name="/query" class="solr.SearchHandler">
<lst name="defaults">
<str name="echoParams">explicit</str>
<str name="wt">json</str>
<str name="indent">true</str>
</lst>
</requestHandler>
<initParams path="/update/**,/query,/select,/spell">
<lst name="defaults">
<str name="df">_text_</str>
</lst>
</initParams>
<searchComponent name="spellcheck" class="solr.SpellCheckComponent">
<str name="queryAnalyzerFieldType">text_general</str>
<!-- a spellchecker built from a field of the main index -->
<lst name="spellchecker">
<str name="name">default</str>
<str name="field">_text_</str>
<str name="classname">solr.DirectSolrSpellChecker</str>
<!-- the spellcheck distance measure used, the default is the internal levenshtein -->
<str name="distanceMeasure">internal</str>
<!-- minimum accuracy needed to be considered a valid spellcheck suggestion -->
<float name="accuracy">0.5</float>
<!-- the maximum #edits we consider when enumerating terms: can be 1 or 2 -->
<int name="maxEdits">2</int>
<!-- the minimum shared prefix when enumerating terms -->
<int name="minPrefix">1</int>
<!-- maximum number of inspections per result. -->
<int name="maxInspections">5</int>
<!-- minimum length of a query term to be considered for correction -->
<int name="minQueryLength">4</int>
<!-- maximum threshold of documents a query term can appear to be considered for correction -->
<float name="maxQueryFrequency">0.01</float>
</lst>
</searchComponent>
<requestHandler name="/spell" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<str name="spellcheck.dictionary">default</str>
<str name="spellcheck">on</str>
<str name="spellcheck.extendedResults">true</str>
<str name="spellcheck.count">10</str>
<str name="spellcheck.alternativeTermCount">5</str>
<str name="spellcheck.maxResultsForSuggest">5</str>
<str name="spellcheck.collate">true</str>
<str name="spellcheck.collateExtendedResults">true</str>
<str name="spellcheck.maxCollationTries">10</str>
<str name="spellcheck.maxCollations">5</str>
</lst>
<arr name="last-components">
<str>spellcheck</str>
</arr>
</requestHandler>
<searchComponent name="terms" class="solr.TermsComponent"/>
<!-- A request handler for demonstrating the terms component -->
<requestHandler name="/terms" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<bool name="terms">true</bool>
<bool name="distrib">false</bool>
</lst>
<arr name="components">
<str>terms</str>
</arr>
</requestHandler>
<searchComponent class="solr.HighlightComponent" name="highlight">
<highlighting>
<!-- Configure the standard fragmenter -->
<!-- This could most likely be commented out in the "default" case -->
<fragmenter name="gap"
default="true"
class="solr.highlight.GapFragmenter">
<lst name="defaults">
<int name="hl.fragsize">100</int>
</lst>
</fragmenter>
<!-- A regular-expression-based fragmenter
(for sentence extraction)
-->
<fragmenter name="regex"
class="solr.highlight.RegexFragmenter">
<lst name="defaults">
<!-- slightly smaller fragsizes work better because of slop -->
<int name="hl.fragsize">70</int>
<!-- allow 50% slop on fragment sizes -->
<float name="hl.regex.slop">0.5</float>
<!-- a basic sentence pattern -->
<str name="hl.regex.pattern">[-\w ,/\n\"']{20,200}</str>
</lst>
</fragmenter>
<!-- Configure the standard formatter -->
<formatter name="html"
default="true"
class="solr.highlight.HtmlFormatter">
<lst name="defaults">
<str name="hl.simple.pre"><![CDATA[<em>]]></str>
<str name="hl.simple.post"><![CDATA[</em>]]></str>
</lst>
</formatter>
<!-- Configure the standard encoder -->
<encoder name="html"
class="solr.highlight.HtmlEncoder" />
<!-- Configure the standard fragListBuilder -->
<fragListBuilder name="simple"
class="solr.highlight.SimpleFragListBuilder"/>
<!-- Configure the single fragListBuilder -->
<fragListBuilder name="single"
class="solr.highlight.SingleFragListBuilder"/>
<!-- Configure the weighted fragListBuilder -->
<fragListBuilder name="weighted"
default="true"
class="solr.highlight.WeightedFragListBuilder"/>
<!-- default tag FragmentsBuilder -->
<fragmentsBuilder name="default"
default="true"
class="solr.highlight.ScoreOrderFragmentsBuilder">
<!--
<lst name="defaults">
<str name="hl.multiValuedSeparatorChar">/</str>
</lst>
-->
</fragmentsBuilder>
<!-- multi-colored tag FragmentsBuilder -->
<fragmentsBuilder name="colored"
class="solr.highlight.ScoreOrderFragmentsBuilder">
<lst name="defaults">
<str name="hl.tag.pre"><![CDATA[
<b style="background:yellow">,<b style="background:lawgreen">,
<b style="background:aquamarine">,<b style="background:magenta">,
<b style="background:palegreen">,<b style="background:coral">,
<b style="background:wheat">,<b style="background:khaki">,
<b style="background:lime">,<b style="background:deepskyblue">]]></str>
<str name="hl.tag.post"><![CDATA[</b>]]></str>
</lst>
</fragmentsBuilder>
<boundaryScanner name="default"
default="true"
class="solr.highlight.SimpleBoundaryScanner">
<lst name="defaults">
<str name="hl.bs.maxScan">10</str>
<str name="hl.bs.chars">.,!? 	 </str>
</lst>
</boundaryScanner>
<boundaryScanner name="breakIterator"
class="solr.highlight.BreakIteratorBoundaryScanner">
<lst name="defaults">
<!-- type should be one of CHARACTER, WORD(default), LINE and SENTENCE -->
<str name="hl.bs.type">WORD</str>
<!-- language and country are used when constructing Locale object. -->
<!-- And the Locale object will be used when getting instance of BreakIterator -->
<str name="hl.bs.language">en</str>
<str name="hl.bs.country">US</str>
</lst>
</boundaryScanner>
</highlighting>
</searchComponent>
<searchComponent name="query" class="org.apache.solr.handler.component.QueryComponent" />
</config>
这里是 schema.xml 文件：
<?xml version="1.0" encoding="UTF-8"?>
<schema name='test2' version='1.1'>
<types>
<fieldtype name='string' class='solr.StrField' />
<fieldtype name='long' class='solr.TrieLongField' />
<fieldType name="plong" class="solr.LongPointField" docValues="true" />
<fieldType name="text" class="solr.TextField"/>
</types>
<fields>
<field name='id' type='long' required='true' />
<field name="_version_" type="plong" indexed="false" stored="true"/>
<field name='title' type='text' />
<field name='parentCategory' type='text' />
<field name='childCategory' type='text' />
<field name='body' type='text' />
<field name='url' type='text' />
<dynamicField name='*_string' type='text' multiValued='true' indexed='true' stored='true' />
<copyField source='*' dest='_text_' />
<field name='_text_' type='text' indexed='true' multiValued='true' stored='true' />
</fields>
<uniqueKey>id</uniqueKey>
<df>_text_</df>
<solrQueryParser q.op='OR' />
</schema>
任何人都可以帮助我在这里进行搜索吗？
编辑：
使用确切的短语确实有效。例如，如果我有一个名为 "Test Title" 的标题，并且我使用搜索短语 title:"Test Title"，它会按预期工作。但我应该能够使用以下搜索查询：title:"test" 并得到相同的结果。
为此，Solr 为您提供了一些内置的令牌过滤器。对于您的情况，我认为 EdgeNGramFilterFactory 和 NGramFilterFactory 会起作用，因为您需要在不传递 Regex 表达式的情况下匹配部分标记。您可以在 link 找到更多相关信息：https://hostedapachesolr.com/support/partial-word-match-solr-edgengramfilterfactory . You can always configure this filter as per your needs . If you are new to filters in Solr, this part of the documentation may help you https://lucene.apache.org/solr/guide/6_6/understanding-analyzers-tokenizers-and-filters.html。
从您的 schema.xml 来看，没有理由匹配任何东西，除了精确匹配。您的 TextField 没有标记器（将文本拆分为单词/标记）或任何过滤器（进一步处理文本）。
相反，您可能希望将字段基于可用的 text_ 类型之一 in the default config, such as text_general:
<fieldType name="text_general" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
<!-- in this example, we will only use synonyms at query time
<filter class="solr.SynonymFilterFactory" synonyms="index_synonyms.txt" ignoreCase="true" expand="false"/>
-->
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>
这会将您的文本拆分为多个不同字符（例如空格、- 等）的单独标记，然后应用 StopFilter（删除 the 和其他不相关的words) 最后应用 LowerCaseFilter - 这意味着匹配时所有内容都将是小写的。由于在索引和查询时都会发生小写（由 index 和 query 类型的链定义给出），这使得您的搜索在实践中不区分大小写。
进行此类更改后（特别是更改内容索引方式的任何内容），您必须重新索引您的内容（即再次将所有文档提交给 Solr）。
我在获取 Solr 搜索设置时遇到问题。我是 Solr 的新手，但我认为问题出在 solrconfig.xml 文件上。但如果我错了请告诉我！
问题是，如果我在 Solr 管理页面的 q 字段中键入搜索，我会得到 0 个结果。但是，如果我键入 *"query"* 之类的通配符查询，我将返回数据库中的所有文档。这是我的 solrconfig.xml 文件：
<?xml version="1.0" encoding="UTF-8"?>
<config>
<luceneMatchVersion>8.4.1</luceneMatchVersion>
<dataDir>${solr.data.dir:}</dataDir>
<directoryFactory name="DirectoryFactory"
class="${solr.directoryFactory:solr.NRTCachingDirectoryFactory}"/>
<codecFactory class="solr.SchemaCodecFactory"/>
<schemaFactory class="ClassicIndexSchemaFactory"/>
<updateHandler class="solr.DirectUpdateHandler2">
<updateLog>
<str name="dir">${solr.ulog.dir:}</str>
<int name="numVersionBuckets">${solr.ulog.numVersionBuckets:65536}</int>
</updateLog>
<autoCommit>
<maxTime>${solr.autoCommit.maxTime:15000}</maxTime>
<openSearcher>false</openSearcher>
</autoCommit>
<autoSoftCommit>
<maxTime>${solr.autoSoftCommit.maxTime:-1}</maxTime>
</autoSoftCommit>
</updateHandler>
<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Query section - these settings control query time things like caches
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<query>
<maxBooleanClauses>${solr.max.booleanClauses:1024}</maxBooleanClauses>
<filterCache class="solr.FastLRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<queryResultCache class="solr.LRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<documentCache class="solr.LRUCache"
size="512"
initialSize="512"
autowarmCount="0"/>
<!-- custom cache currently used by block join -->
<cache name="perSegFilter"
class="solr.search.LRUCache"
size="10"
initialSize="0"
autowarmCount="10"
regenerator="solr.NoOpRegenerator" />
<enableLazyFieldLoading>true</enableLazyFieldLoading>
<queryResultWindowSize>20</queryResultWindowSize>
<queryResultMaxDocsCached>200</queryResultMaxDocsCached>
<listener event="newSearcher" class="solr.QuerySenderListener">
<arr name="queries">
</arr>
</listener>
<listener event="firstSearcher" class="solr.QuerySenderListener">
<arr name="queries">
</arr>
</listener>
<useColdSearcher>false</useColdSearcher>
</query>
<requestDispatcher>
<httpCaching never304="true" />
</requestDispatcher>
<requestHandler name="/select" class="solr.SearchHandler">
<!-- <lst name="defaults"> -->
<!-- <str name="echoParams">explicit</str> -->
<!-- <int name="rows">10</int> -->
<!-- </lst> -->
</requestHandler>
<requestHandler name="/query" class="solr.SearchHandler">
<lst name="defaults">
<str name="echoParams">explicit</str>
<str name="wt">json</str>
<str name="indent">true</str>
</lst>
</requestHandler>
<initParams path="/update/**,/query,/select,/spell">
<lst name="defaults">
<str name="df">_text_</str>
</lst>
</initParams>
<searchComponent name="spellcheck" class="solr.SpellCheckComponent">
<str name="queryAnalyzerFieldType">text_general</str>
<!-- a spellchecker built from a field of the main index -->
<lst name="spellchecker">
<str name="name">default</str>
<str name="field">_text_</str>
<str name="classname">solr.DirectSolrSpellChecker</str>
<!-- the spellcheck distance measure used, the default is the internal levenshtein -->
<str name="distanceMeasure">internal</str>
<!-- minimum accuracy needed to be considered a valid spellcheck suggestion -->
<float name="accuracy">0.5</float>
<!-- the maximum #edits we consider when enumerating terms: can be 1 or 2 -->
<int name="maxEdits">2</int>
<!-- the minimum shared prefix when enumerating terms -->
<int name="minPrefix">1</int>
<!-- maximum number of inspections per result. -->
<int name="maxInspections">5</int>
<!-- minimum length of a query term to be considered for correction -->
<int name="minQueryLength">4</int>
<!-- maximum threshold of documents a query term can appear to be considered for correction -->
<float name="maxQueryFrequency">0.01</float>
</lst>
</searchComponent>
<requestHandler name="/spell" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<str name="spellcheck.dictionary">default</str>
<str name="spellcheck">on</str>
<str name="spellcheck.extendedResults">true</str>
<str name="spellcheck.count">10</str>
<str name="spellcheck.alternativeTermCount">5</str>
<str name="spellcheck.maxResultsForSuggest">5</str>
<str name="spellcheck.collate">true</str>
<str name="spellcheck.collateExtendedResults">true</str>
<str name="spellcheck.maxCollationTries">10</str>
<str name="spellcheck.maxCollations">5</str>
</lst>
<arr name="last-components">
<str>spellcheck</str>
</arr>
</requestHandler>
<searchComponent name="terms" class="solr.TermsComponent"/>
<!-- A request handler for demonstrating the terms component -->
<requestHandler name="/terms" class="solr.SearchHandler" startup="lazy">
<lst name="defaults">
<bool name="terms">true</bool>
<bool name="distrib">false</bool>
</lst>
<arr name="components">
<str>terms</str>
</arr>
</requestHandler>
<searchComponent class="solr.HighlightComponent" name="highlight">
<highlighting>
<!-- Configure the standard fragmenter -->
<!-- This could most likely be commented out in the "default" case -->
<fragmenter name="gap"
default="true"
class="solr.highlight.GapFragmenter">
<lst name="defaults">
<int name="hl.fragsize">100</int>
</lst>
</fragmenter>
<!-- A regular-expression-based fragmenter
(for sentence extraction)
-->
<fragmenter name="regex"
class="solr.highlight.RegexFragmenter">
<lst name="defaults">
<!-- slightly smaller fragsizes work better because of slop -->
<int name="hl.fragsize">70</int>
<!-- allow 50% slop on fragment sizes -->
<float name="hl.regex.slop">0.5</float>
<!-- a basic sentence pattern -->
<str name="hl.regex.pattern">[-\w ,/\n\"']{20,200}</str>
</lst>
</fragmenter>
<!-- Configure the standard formatter -->
<formatter name="html"
default="true"
class="solr.highlight.HtmlFormatter">
<lst name="defaults">
<str name="hl.simple.pre"><![CDATA[<em>]]></str>
<str name="hl.simple.post"><![CDATA[</em>]]></str>
</lst>
</formatter>
<!-- Configure the standard encoder -->
<encoder name="html"
class="solr.highlight.HtmlEncoder" />
<!-- Configure the standard fragListBuilder -->
<fragListBuilder name="simple"
class="solr.highlight.SimpleFragListBuilder"/>
<!-- Configure the single fragListBuilder -->
<fragListBuilder name="single"
class="solr.highlight.SingleFragListBuilder"/>
<!-- Configure the weighted fragListBuilder -->
<fragListBuilder name="weighted"
default="true"
class="solr.highlight.WeightedFragListBuilder"/>
<!-- default tag FragmentsBuilder -->
<fragmentsBuilder name="default"
default="true"
class="solr.highlight.ScoreOrderFragmentsBuilder">
<!--
<lst name="defaults">
<str name="hl.multiValuedSeparatorChar">/</str>
</lst>
-->
</fragmentsBuilder>
<!-- multi-colored tag FragmentsBuilder -->
<fragmentsBuilder name="colored"
class="solr.highlight.ScoreOrderFragmentsBuilder">
<lst name="defaults">
<str name="hl.tag.pre"><![CDATA[
<b style="background:yellow">,<b style="background:lawgreen">,
<b style="background:aquamarine">,<b style="background:magenta">,
<b style="background:palegreen">,<b style="background:coral">,
<b style="background:wheat">,<b style="background:khaki">,
<b style="background:lime">,<b style="background:deepskyblue">]]></str>
<str name="hl.tag.post"><![CDATA[</b>]]></str>
</lst>
</fragmentsBuilder>
<boundaryScanner name="default"
default="true"
class="solr.highlight.SimpleBoundaryScanner">
<lst name="defaults">
<str name="hl.bs.maxScan">10</str>
<str name="hl.bs.chars">.,!? 	 </str>
</lst>
</boundaryScanner>
<boundaryScanner name="breakIterator"
class="solr.highlight.BreakIteratorBoundaryScanner">
<lst name="defaults">
<!-- type should be one of CHARACTER, WORD(default), LINE and SENTENCE -->
<str name="hl.bs.type">WORD</str>
<!-- language and country are used when constructing Locale object. -->
<!-- And the Locale object will be used when getting instance of BreakIterator -->
<str name="hl.bs.language">en</str>
<str name="hl.bs.country">US</str>
</lst>
</boundaryScanner>
</highlighting>
</searchComponent>
<searchComponent name="query" class="org.apache.solr.handler.component.QueryComponent" />
</config>
这里是 schema.xml 文件：
<?xml version="1.0" encoding="UTF-8"?>
<schema name='test2' version='1.1'>
<types>
<fieldtype name='string' class='solr.StrField' />
<fieldtype name='long' class='solr.TrieLongField' />
<fieldType name="plong" class="solr.LongPointField" docValues="true" />
<fieldType name="text" class="solr.TextField"/>
</types>
<fields>
<field name='id' type='long' required='true' />
<field name="_version_" type="plong" indexed="false" stored="true"/>
<field name='title' type='text' />
<field name='parentCategory' type='text' />
<field name='childCategory' type='text' />
<field name='body' type='text' />
<field name='url' type='text' />
<dynamicField name='*_string' type='text' multiValued='true' indexed='true' stored='true' />
<copyField source='*' dest='_text_' />
<field name='_text_' type='text' indexed='true' multiValued='true' stored='true' />
</fields>
<uniqueKey>id</uniqueKey>
<df>_text_</df>
<solrQueryParser q.op='OR' />
</schema>
任何人都可以帮助我在这里进行搜索吗？
编辑：
使用确切的短语确实有效。例如，如果我有一个名为 "Test Title" 的标题，并且我使用搜索短语 title:"Test Title"，它会按预期工作。但我应该能够使用以下搜索查询：title:"test" 并得到相同的结果。
为此，Solr 为您提供了一些内置的令牌过滤器。对于您的情况，我认为 EdgeNGramFilterFactory 和 NGramFilterFactory 会起作用，因为您需要在不传递 Regex 表达式的情况下匹配部分标记。您可以在 link 找到更多相关信息：https://hostedapachesolr.com/support/partial-word-match-solr-edgengramfilterfactory . You can always configure this filter as per your needs . If you are new to filters in Solr, this part of the documentation may help you https://lucene.apache.org/solr/guide/6_6/understanding-analyzers-tokenizers-and-filters.html。
从您的 schema.xml 来看，没有理由匹配任何东西，除了精确匹配。您的 TextField 没有标记器（将文本拆分为单词/标记）或任何过滤器（进一步处理文本）。
相反，您可能希望将字段基于可用的 text_ 类型之一 in the default config, such as text_general:
<fieldType name="text_general" class="solr.TextField" positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
<!-- in this example, we will only use synonyms at query time
<filter class="solr.SynonymFilterFactory" synonyms="index_synonyms.txt" ignoreCase="true" expand="false"/>
-->
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
<analyzer type="query">
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" />
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>
这会将您的文本拆分为多个不同字符（例如空格、- 等）的单独标记，然后应用 StopFilter（删除 the 和其他不相关的words) 最后应用 LowerCaseFilter - 这意味着匹配时所有内容都将是小写的。由于在索引和查询时都会发生小写（由 index 和 query 类型的链定义给出），这使得您的搜索在实践中不区分大小写。
进行此类更改后（特别是更改内容索引方式的任何内容），您必须重新索引您的内容（即再次将所有文档提交给 Solr）。