当我尝试在 Lucene 中搜索诸如“解决方法/修复”之类的内容时,它会抛出此错误:
org.apache.lucene.queryparser.classic.ParseException: Cannot parse 'workaround/fix': Lexical error at line 1, column 15. Encountered: <EOF> after : "/fix"
at org.apache.lucene.queryparser.classic.QueryParserBase.parse(QueryParserBase.java:131)
at pi.lucengine.LucIndex.main(LucIndex.java:112)
Caused by: org.apache.lucene.queryparser.classic.TokenMgrError: Lexical error at line 1, column 15. Encountered: <EOF> after : "/fix"
at org.apache.lucene.queryparser.classic.QueryParserTokenManager.getNextToken(QueryParserTokenManager.java:1133)
at org.apache.lucene.queryparser.classic.QueryParser.jj_scan_token(QueryParser.java:599)
at org.apache.lucene.queryparser.classic.QueryParser.jj_3R_2(QueryParser.java:482)
at org.apache.lucene.queryparser.classic.QueryParser.jj_3_1(QueryParser.java:489)
at org.apache.lucene.queryparser.classic.QueryParser.jj_2_1(QueryParser.java:475)
at org.apache.lucene.queryparser.classic.QueryParser.Clause(QueryParser.java:226)
at org.apache.lucene.queryparser.classic.QueryParser.Query(QueryParser.java:181)
at org.apache.lucene.queryparser.classic.QueryParser.TopLevelQuery(QueryParser.java:170)
at org.apache.lucene.queryparser.classic.QueryParserBase.parse(QueryParserBase.java:121)
这是我的第 111 行和第 112 行:
QueryParser parser = new QueryParser(Version.LUCENE_43, field, analyzer);
Query query = parser.parse(newLine);
我需要做什么才能让它解析“/”?
查询解析器将斜杠解释为开始/结束或正则表达式查询(从 4.0 开始,请参阅文档在这里 http://lucene.apache.org/core/4_0_0/queryparser/org/apache/lucene/queryparser/classic/package-summary.html#Regexp_Searches).
因此,要将斜杠合并到查询中,您需要逃离他们 http://lucene.apache.org/core/4_0_0/queryparser/org/apache/lucene/queryparser/classic/package-summary.html#Escaping_Special_Characters通过添加反斜杠 (\
)在他们面前。
你可以通过以下方式处理转义QueryParser.escape(String) http://lucene.apache.org/core/4_0_0/queryparser/org/apache/lucene/queryparser/classic/QueryParserBase.html#escape(java.lang.String).
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