lucene之Highlighter报错cannot be resolved to a type

页面顶部引入了：<%@ page import = "
javax.servlet.*,
javax.servlet.http.*, 
java.io.*,
org.apache.lucene.analysis.*,
org.apache.lucene.analysis.standard.StandardAnalyzer,
org.apache.lucene.document.*,
org.apache.lucene.index.*,
org.apache.lucene.store.*, org.apache.lucene.search.*,
org.apache.lucene.search.highlight.*,
org.apache.lucene.queryParser.*,
org.apache.lucene.demo.*,
org.apache.lucene.demo.html.Entities,
java.net.URLEncoder,
org.apache.lucene.util.Version" %>
定义Highlighter hl;//或者org.apache.lucene.search.highlight.Highlighter hl;
报错：

org.apache.jasper.JasperException: Unable to compile class for JSP: 
An error occurred at line: 97 in the jsp file: /results.jsp
org.apache.lucene.search.highlight.Highlighter cannot be resolved to a type