启用 solr suggest

suggest 是搜索引擎一个方便的功能，对数据的关键字进行预测和建议，减少了用户的输入，大体的效果如下：

幸运的是 solr 也提供了类似的功能，在该功能的基础上，配合 jQuery 或 kissy 的自动完成组件就可以实现类似上面的功能。

 <searchComponent name="spellcheck" class="solr.SpellCheckComponent">
    <str name="queryAnalyzerFieldType">textSpell</str>
    <lst name="spellchecker">
      <str name="name">default</str>
      <str name="field">title</str>
      <str name="buildOnCommit">true</str>
      <str name="spellcheckIndexDir">spellchecker</str>
    </lst>
  </searchComponent>

<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.TSTLookupFactory</str>
		<float name="threshold">0.005</float>
		<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">5</str>
		<str name="spellcheck.collate">true</str>
	</lst>
	<arr name="components">
		<str>suggest</str>
	</arr>
</requestHandler>

http://localhost:8983/solr/suggest/?q=%E7%94%9F

会得到如下结果：