在线等！怒求各位大神！导入了对应的包，也生成了字节码文件，但还是ClassNotFoundException啊啊啊！！
在前端jsp表单将关键词keywords提交给servlet，然后在servlet里调用lia.meetlucene里的Indexer类和Searcher类的主方法报错：
java.lang.ClassNotFoundException: org.apache.lucene.index.IndexableField
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1713)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1558)
at servlet.absSearchServ.doPost(absSearchServ.java:63)
相关代码：
servlet：absSearchServ
package com.xnch.lucenesearch.internet;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.miscellaneous.LimitTokenCountAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.StringField;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.IndexableField;
import org.apache.lucene.index.LogByteSizeMergePolicy;
import org.apache.lucene.index.LogMergePolicy;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.IndexWriterConfig.OpenMode;
import org.apache.lucene.queryparser.classic.MultiFieldQueryParser;
import org.apache.lucene.queryparser.classic.QueryParser;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.highlight.Formatter;
import org.apache.lucene.search.highlight.Fragmenter;
import org.apache.lucene.search.highlight.Highlighter;
import org.apache.lucene.search.highlight.QueryScorer;
import org.apache.lucene.search.highlight.Scorer;
import org.apache.lucene.search.highlight.SimpleFragmenter;
import org.apache.lucene.search.highlight.SimpleHTMLFormatter;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.Version;
import org.wltea.analyzer.lucene.IKAnalyzer;
import com.xnch.lucenesearch.bean.CourseInfo;
public class RAM_FSTest {
public final String COURSE_ID = "courseId";
public final String COURSE_NAME = "courseName";
public final String USERNAME = "userName";
public final String COURSE_INTRODU = "course_introdu";
public final String UPLOAD_DATE = "upload_date";
Analyzer analyzer = new IKAnalyzer();
IndexWriter writer = null;
Directory RAMDirectory = null;
Directory fsDirectory = null;
public final static String indexPath = "F:\\javadata\\javawebpro\\lucene\\luceneIndex1";
public static void main(String[] args) throws Exception {
RAM_FSTest rf = new RAM_FSTest();
System.out.println(rf.RAMDirectory);
rf.buildIndex();
System.out.println(rf.RAMDirectory);
// xuwen 程序员 x1@#
String content = "是可以避免的 ";
rf.search(content);
System.out.println(rf.RAMDirectory);
// new RAM_FSTest().deleteDoc("1");
}
public void buildIndex() {
RAMDirectory = new RAMDirectory();
LogMergePolicy mergePolicy = new LogByteSizeMergePolicy();
// 达到3个文件时就和合并
mergePolicy.setMergeFactor(10);
IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_42,
analyzer);
config.setInfoStream(System.out);
config.setMergePolicy(mergePolicy);
config.setMaxBufferedDocs(9);
try {
writer = new IndexWriter(RAMDirectory, getConfig());
writer.addDocuments(getData());
writer.close();
saveIndexToFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void saveIndexToFile() {
try {
fsDirectory = FSDirectory.open(new File(indexPath));
IndexWriter fsIndexWriter = new IndexWriter(fsDirectory,
getConfig());
fsIndexWriter.addIndexes(new Directory[] { RAMDirectory });
fsIndexWriter.close();
fsDirectory.close();
RAMDirectory.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public IndexWriterConfig getConfig() {
LogMergePolicy mergePolicy = new LogByteSizeMergePolicy();
// 达到3个文件时就和合并
mergePolicy.setMergeFactor(10);
LimitTokenCountAnalyzer limitTokenCountAnalyzer=new LimitTokenCountAnalyzer(new IKAnalyzer(), 1);
IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_42,
limitTokenCountAnalyzer);
config.setInfoStream(System.out);
config.setMergePolicy(mergePolicy);
config.setMaxBufferedDocs(9);
config.setOpenMode(OpenMode.CREATE);
return config;
}
// 搜索
public void search(String content) throws Exception {
String queryString = content;
String[] fields = { COURSE_ID, COURSE_NAME, USERNAME };
QueryParser queryParse = new MultiFieldQueryParser(Version.LUCENE_42,
fields, analyzer);
queryParse.setPhraseSlop(3);
Query query = queryParse.parse(queryString);
Directory directory = FSDirectory.open(new File(indexPath));
DirectoryReader directoryReader = DirectoryReader.open(directory);
IndexSearcher isearcher = new IndexSearcher(directoryReader);
Filter filter = null;
Formatter formatter = new SimpleHTMLFormatter("<font color='red'>",
"</font>");
/*
* Term term = new Term(USERNAME, content); query = new TermQuery(term);
*/
Scorer scorer = new QueryScorer(query);
Highlighter highlighter = new Highlighter(formatter, scorer);
Fragmenter fragmenter = new SimpleFragmenter(100);// 截取的字符长度，最长100
highlighter.setTextFragmenter(fragmenter);
TopDocs topDocs = isearcher.search(query, null, 1000);
System.out.println("总共有[" + topDocs.totalHits + "]条匹配结果");
for (ScoreDoc scoreDoc : topDocs.scoreDocs) {
int docsn = scoreDoc.doc;// 文档内部编号
Document doc = isearcher.doc(docsn); // 根据编号取出相应的文档
String hc = highlighter.getBestFragment(analyzer, COURSE_NAME, doc
.get(COURSE_NAME));
if (hc != null) {
int endIndex = Math.min(50, hc.length());// 谁小取谁,取最小的
hc.substring(0, endIndex);
((Field) doc.getField(COURSE_NAME)).setStringValue(hc);
}
String hcUserName = highlighter.getBestFragment(analyzer, USERNAME,
doc.get(USERNAME));
if (hcUserName != null) {
((Field) doc.getField(USERNAME)).setStringValue(hcUserName);
}
String hcCourseId = highlighter.getBestFragment(analyzer,
COURSE_ID, doc.get(COURSE_ID));
if (hcCourseId != null) {
((Field) doc.getField(COURSE_ID)).setStringValue(hcCourseId);
}
printDocumentInfo(doc);
}
directoryReader.close();
directory.close();
}
/**
* 根据id删除文档
*
* @param id
*/
public void deleteDoc(String id) {
try {
Directory dir = FSDirectory.open(new File(indexPath));
IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_42,
analyzer);
iwc.setOpenMode(OpenMode.CREATE_OR_APPEND);
IndexWriter writer = new IndexWriter(dir, iwc);
writer.deleteDocuments(new Term(COURSE_ID, id));
writer.commit();
writer.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void printDocumentInfo(Document doc) {
// TODO Auto-generated method stub
/*
* Field f = doc.getField("name"); f.readerValue()
*/
System.out.println(COURSE_ID + ":" + doc.get(COURSE_ID));
System.out.println(COURSE_NAME + ":" + doc.get(COURSE_NAME));
System.out.println(USERNAME + ":" + doc.get(USERNAME));
}
public final class DocumentUtils {
public Document getDocument(CourseInfo courseInfo) {
Document doc = new Document();
// Field fieldCourseId = TextField(COURSE_ID,
// courseInfo.getCourseId(), Store.YES);
// StoredField 仅仅存储，没有索引的
// Field fieldCourseId = new StoredField(COURSE_ID,
// courseInfo.getCourseId());
// intField LongField 这样字段用于排序和过滤
// 作为一个整体，不分词索引
Field fieldCourseId = new StringField(COURSE_ID, String
.valueOf(courseInfo.getCourseId()), Field.Store.YES);
Field fieldUsrName = new StringField(USERNAME, courseInfo
.getUserName(), Field.Store.YES);
doc.add(fieldCourseId);
doc.add(fieldUsrName);
doc.add(new TextField(COURSE_NAME, courseInfo.getCourseName(),
Field.Store.YES));
return doc;
}
}
public Iterable<? extends Iterable<? extends IndexableField>> getData() {
ArrayList<Document> array = new ArrayList<Document>();
CourseInfo courseInfo = null;
courseInfo = new CourseInfo();
courseInfo.setCourseId(1);
courseInfo.setCourseName("我的英语书");
courseInfo.setUserName("xunianchong");
array.add(new DocumentUtils().getDocument(courseInfo));
courseInfo = new CourseInfo();
courseInfo.setCourseId(2);
courseInfo.setCourseName("java高级编程");
courseInfo.setUserName("zijinhua");
array.add(new DocumentUtils().getDocument(courseInfo));
courseInfo = new CourseInfo();
courseInfo.setCourseId(3);
courseInfo.setCourseName("高级程序员之路");
courseInfo.setUserName("xuwen");
array.add(new DocumentUtils().getDocument(courseInfo));
courseInfo = new CourseInfo();
courseInfo.setCourseId(4);
courseInfo.setCourseName("成人高考英语");
courseInfo.setUserName("i,am,in,hubei");
array.add(new DocumentUtils().getDocument(courseInfo));
courseInfo = new CourseInfo();
courseInfo.setCourseId(5);
courseInfo.setCourseName("中华人民午在湾岛及所有附属各岛屿、澎湖列万两");
courseInfo.setUserName("x1@#");
array.add(new DocumentUtils().getDocument(courseInfo));
return array;
}
}
