jsp 里找不到这个类,需要导入这个类。类似:<%@ page import="***.test"%>
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2 test 是否是Test.
可是我看了下,这个包我也是倒入了的,非常郁闷。。
An error occurred at line: 34 in the jsp file: /testAAA.jsp
test cannot be resolved to a type"
因无法识别这个类型,导致编译不过。
这是test代码package lia.meetlucene;import java.io.File;
import java.io.IOException;
import java.io.StringReader;import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.core.SimpleAnalyzer;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryparser.classic.ParseException;
import org.apache.lucene.queryparser.classic.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.highlight.Highlighter;
import org.apache.lucene.search.highlight.InvalidTokenOffsetsException;
import org.apache.lucene.search.highlight.QueryScorer;
import org.apache.lucene.search.highlight.SimpleHTMLFormatter;
import org.apache.lucene.search.highlight.SimpleSpanFragmenter;
import org.apache.lucene.search.highlight.TokenSources;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.SimpleFSDirectory;
import org.apache.lucene.util.Version;
import org.wltea.analyzer.lucene.IKAnalyzer;public class test {
public test(){
}
// 高亮處理文本(以下内容纯属虚构)
private String text = "China has lots of people,most of them are very poor.China is very big.China become strong now,but the poor people is also poor than other controry"; // 原文高亮
public void highlighter() throws IOException, InvalidTokenOffsetsException { TermQuery termQuery = new TermQuery(new Term("field", "china"));
TokenStream tokenStream = new SimpleAnalyzer(Version.LUCENE_40)
.tokenStream("field", new StringReader(text)); QueryScorer queryScorer = new QueryScorer(termQuery);
Highlighter highlighter = new Highlighter(queryScorer);
highlighter.setTextFragmenter(new SimpleSpanFragmenter(queryScorer));
System.out.println(highlighter.getBestFragment(tokenStream, text));
} // 使用CSS進行高亮顯示處理
public void highlighter_CSS(String searchText) throws ParseException,
IOException, InvalidTokenOffsetsException { // 創建查詢
QueryParser queryParser = new QueryParser(Version.LUCENE_40, "field",
new SimpleAnalyzer(Version.LUCENE_40));
Query query = queryParser.parse(searchText); // 自定义标注高亮文本标签
SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter(
"<span style=\"backgroud:red\">", "</span>");
// 语汇单元化
TokenStream tokenStream = new SimpleAnalyzer(Version.LUCENE_40)
.tokenStream("field", new StringReader(text)); // 創建QueryScoer
QueryScorer queryScorer = new QueryScorer(query, "field"); Highlighter highlighter = new Highlighter(htmlFormatter, queryScorer);
highlighter.setTextFragmenter(new SimpleSpanFragmenter(queryScorer)); System.out.println(highlighter.getBestFragments(tokenStream, text, 4,
"..."));
}
public String highlighter_CSS1(String searchText) throws ParseException,
IOException, InvalidTokenOffsetsException {
// 創建查詢
QueryParser queryParser = new QueryParser(Version.LUCENE_40, "field",
new SimpleAnalyzer(Version.LUCENE_40));
Query query = queryParser.parse(searchText);
// 自定义标注高亮文本标签
SimpleHTMLFormatter htmlFormatter = new SimpleHTMLFormatter(
"<span style=\"backgroud:red\">", "</span>");
// 语汇单元化
TokenStream tokenStream = new SimpleAnalyzer(Version.LUCENE_40)
.tokenStream("field", new StringReader(text));
// 創建QueryScoer
QueryScorer queryScorer = new QueryScorer(query, "field");
Highlighter highlighter = new Highlighter(htmlFormatter, queryScorer);
highlighter.setTextFragmenter(new SimpleSpanFragmenter(queryScorer));
System.out.println(highlighter.getBestFragments(tokenStream, text, 4,
"..."));
return highlighter.getBestFragments(tokenStream, text, 4,
"...");
} // 高亮顯示搜索結果
public void highlighter_SR(String field, String searchText)
throws IOException, ParseException, InvalidTokenOffsetsException { //本次示例为了简便直接使用之前实验建立的索引
Directory directory = new SimpleFSDirectory(new File("E://MyIndex"));
IndexReader reader = DirectoryReader.open(directory);// 读取目录
IndexSearcher search = new IndexSearcher(reader);// 初始化查询组件
QueryParser parser = new QueryParser(Version.LUCENE_40, field,
new IKAnalyzer(true)); Query query = parser.parse(searchText); TopDocs td = search.search(query, 10000);// 获取匹配上元素的一个docid
ScoreDoc[] sd = td.scoreDocs;// 加载所有的Documnet文档 System.out.println("本次命中数据:" + sd.length);
QueryScorer scorer = new QueryScorer(query, "content"); Highlighter highlighter = new Highlighter(scorer);
highlighter.setTextFragmenter(new SimpleSpanFragmenter(scorer)); for (ScoreDoc scoreDoc : sd) {
Document document = search.doc(scoreDoc.doc);
String content = document.get("content");
TokenStream tokenStream = TokenSources.getAnyTokenStream(
search.getIndexReader(), scoreDoc.doc, "content", document,
new IKAnalyzer(true));
System.out.println(highlighter
.getBestFragment(tokenStream, content));
}
}
public void test() throws IOException, InvalidTokenOffsetsException,
ParseException {
// fail("Not yet implemented");
test highlighterTest = new test();
//highlighterTest.highlighter();
//highlighterTest.highlighter_CSS("china");
highlighterTest.highlighter_CSS("poor");
//highlighterTest.highlighter_SR("content", "床前明月光");
}
}
<%@ page import="lia.meetlucene.test"%>
2.Window --> Preferences -->MyEclipse --> Servers -->Tomcat --> Tomcat n.x -->JDK中的Tomcat JDK name下的下拉菜单中选择自身电脑上安装的JDK版本(必需与步骤1中的JDK版本一致).
3.Window --> Preferences -->Java -->Installed JRES,然后在右边选择与步骤1和2版本一致的JDK版本,如果没有,可以自身添加.然后选中就可以了.