How to escape blank space in lucence search to avoid ParseException?

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To avoid specail char ,I have used

fieldname=QueryParserUtil.escape(fieldname);

,so it change char

\+

，but I find that when I only input blank space,it is wrong.It shows:

org.apache.lucene.queryparser.classic.ParseException: Cannot parse ' ': Encountered "" at line 1, column 2.

Posted 29-Sep-15 16:48pm

PEIYANGXINQU

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