获取solr autosuggest结果的短语

Question

我想使用solr为搜索字段创建一个自动提示下拉列表但是在尝试获取短语的建议时我遇到了困难.当我搜索"dog t"时,我想得到一个结果集,其中包含诸如"dog treat","dog trick","dog tags"等短语,但我得到2个结果集,一个用于"dog "(例如"狗""狗骨头""狗狗"......)和另一个"t"(例如"树""时间"......)

我的查询网址是:

http://localhost:8985/solr/mycollection/suggest?q=%22dog%20t%22&wt=json

我的请求处理程序在solrconfig中定义为...

<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">suggest</str>  <!-- the indexed field to derive suggestions from -->
      <float name="threshold">0.0001</float>
      <str name="buildOnCommit">true</str>
    </lst>
<str name="queryAnalyzerFieldType">textSuggest</str>
  </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">10</str>
    </lst>
    <arr name="components">
      <str>suggest</str>
    </arr>
  </requestHandler>

"建议"的字段类型在模式中定义为

    <fieldType name="textSuggest" class="solr.TextField" positionIncrementGap="100" >
      <analyzer type="index">
 <tokenizer class="solr.KeywordTokenizerFactory"/>
   <filter class="solr.LowerCaseFilterFactory"/>
 <filter class="solr.ShingleFilterFactory" maxShingleSize="3" outputUnigrams="true" />
<filter class="solr.WordDelimiterFilterFactory"
                generateWordParts="1"
                generateNumberParts="1"
                catenateWords="0"
                catenateNumbers="0"
                catenateAll="0"
                preserveOriginal="1" splitOnCaseChange="1"
                />
 </analyzer>
<analyzer type="query">
   <tokenizer class="solr.KeywordTokenizerFactory"/>
   <filter class="solr.LowerCaseFilterFactory"/>
 </analyzer>
    </fieldType>

Answer 1

我发现了两个解决方案......

一种是创建一个自定义queryHandler,它不会将q参数拆分成多个单词.

• http://wiki.apache.org/solr/Suggester?highlight=%28suggest%29#Tips_and_tricks
• https://issues.apache.org/jira/browse/SOLR-3143
• http://lucene.472066.n3.nabble.com/suggester-issues-td3262718.html

我选择的另一个选项是使用参数spellcheck.q而不是q.我使用solr 3.4.0并使用spellcheck.q给了我500错误.我将solr更新为3.6.1,它现在似乎正常工作.

• http://lucene.472066.n3.nabble.com/Spell-Checking-a-multi-word-phrase-td2274531.html
• SolR:使用spellcheck.q时出现NullPointerException