Solr 不斷字搜尋, Highlight

修改檔案 schema.xml

必須將 autoGeneratePhraseQueries 改為 true,
若為 false, 則會將 query 字串斷成多個字元去交叉搜尋,
雖然搜尋的到, 但並不會正確 Highlight 該完整關鍵字串

(好像要 schema 1.4 版才支援, 1.3版若加上去會導致 Solr Server 開不起來)

autoGeneratePhraseQueries=true|false (in schema version 1.4 and later this now defaults to false)

	<!-- CJK bigram (see text_ja for a Japanese configuration using morphological analysis) -->
	<fieldType name="text_cjk" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true">
	<analyzer>
	<tokenizer class="solr.StandardTokenizerFactory"/>
	<!-- normalize width before bigram, as e.g. half-width dakuten combine -->
	<filter class="solr.CJKWidthFilterFactory"/>
	<!-- for any non-CJK -->
	<filter class="solr.LowerCaseFilterFactory"/>
	<!-- for CJK bigram will enhance overall performance when deal with huge dataset
	but will not support "?" wildcard search on chinese
	-->
	<filter class="solr.CJKBigramFilterFactory"/>
	</analyzer>
	</fieldType>

	<!-- CJK bigram (see text_ja for a Japanese configuration using morphological analysis) -->
	<fieldType name="text_cjk_no_tf" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true">
	<analyzer>
	<tokenizer class="solr.StandardTokenizerFactory"/>
	<!-- normalize width before bigram, as e.g. half-width dakuten combine -->
	<filter class="solr.CJKWidthFilterFactory"/>
	<!-- for any non-CJK -->
	<filter class="solr.LowerCaseFilterFactory"/>
	<!-- for CJK bigram will enhance overall performance when deal with huge dataset
	but will not support "?" wildcard search on chinese
	-->
	<filter class="solr.CJKBigramFilterFactory"/>
	</analyzer>
	<similarity class="com.intumit.solr.OmitTermFreqSimilarity" />
	</fieldType>

view raw gistfile1.xml hosted with ❤ by GitHub

另外一個做法是在 query 時加上 hl.usePhraseHighlighter 參數
- http://wiki.apache.org/solr/HighlightingParameters#hl.usePhraseHighlighter

// 避免中文被斷詞 highlight
solrQuery .setParam ( "hl.usePhraseHighlighter", true );