package com.bt;import org.apache.lucene.document.Document;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Hits;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import java.io.File;
import java.util.Date;/**
* This code was originally written for Erik's Lucene intro java.net article
*/
public class Searcher { public static void main(String[] args1) throws Exception {
String[] args = { "E:\\test1", "txt" };
if (args.length != 2) {
throw new Exception("Usage: java " + Searcher.class.getName()
+ " <index dir> <query>");
} File indexDir = new File(args[0]);
String q = args[1]; if (!indexDir.exists() || !indexDir.isDirectory()) {
throw new Exception(indexDir
+ " does not exist or is not a directory.");
}
System.out.println("--->");
search(indexDir, q);
System.out.println("--->");
} public static void search(File indexDir, String q) throws Exception {
Directory fsDir = FSDirectory.getDirectory(indexDir, false);
IndexSearcher is = new IndexSearcher(fsDir); Query query = QueryParser.parse(q, "contents", new StandardAnalyzer());
long start = new Date().getTime();
Hits hits = is.search(query);
long end = new Date().getTime(); System.err.println("Found " + hits.length() + " document(s) (in "
+ (end - start) + " milliseconds) that matched query '" + q
+ "':"); for (int i = 0; i < hits.length(); i++) {
Document doc = hits.doc(i);
System.out.println(doc.get("filename"));
}
}
}这个是 lucene in action 一段小程序 一运行出错 Exception in thread "main" java.io.FileNotFoundException: E:\test1\segments (系统找不到指定的文件。)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at org.apache.lucene.store.FSInputStream$Descriptor.<init>(FSDirectory.java:376)
at org.apache.lucene.store.FSInputStream.<init>(FSDirectory.java:405)
at org.apache.lucene.store.FSDirectory.openFile(FSDirectory.java:268)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:40)
at org.apache.lucene.index.IndexReader$1.doBody(IndexReader.java:116)---> at org.apache.lucene.store.Lock$With.run(Lock.java:109)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:111)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:106)
at org.apache.lucene.search.IndexSearcher.<init>(IndexSearcher.java:43)
at com.bt.Searcher.search(Searcher.java:40)
at com.bt.Searcher.main(Searcher.java:34)
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Hits;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import java.io.File;
import java.util.Date;/**
* This code was originally written for Erik's Lucene intro java.net article
*/
public class Searcher { public static void main(String[] args1) throws Exception {
String[] args = { "E:\\test1", "txt" };
if (args.length != 2) {
throw new Exception("Usage: java " + Searcher.class.getName()
+ " <index dir> <query>");
} File indexDir = new File(args[0]);
String q = args[1]; if (!indexDir.exists() || !indexDir.isDirectory()) {
throw new Exception(indexDir
+ " does not exist or is not a directory.");
}
System.out.println("--->");
search(indexDir, q);
System.out.println("--->");
} public static void search(File indexDir, String q) throws Exception {
Directory fsDir = FSDirectory.getDirectory(indexDir, false);
IndexSearcher is = new IndexSearcher(fsDir); Query query = QueryParser.parse(q, "contents", new StandardAnalyzer());
long start = new Date().getTime();
Hits hits = is.search(query);
long end = new Date().getTime(); System.err.println("Found " + hits.length() + " document(s) (in "
+ (end - start) + " milliseconds) that matched query '" + q
+ "':"); for (int i = 0; i < hits.length(); i++) {
Document doc = hits.doc(i);
System.out.println(doc.get("filename"));
}
}
}这个是 lucene in action 一段小程序 一运行出错 Exception in thread "main" java.io.FileNotFoundException: E:\test1\segments (系统找不到指定的文件。)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at org.apache.lucene.store.FSInputStream$Descriptor.<init>(FSDirectory.java:376)
at org.apache.lucene.store.FSInputStream.<init>(FSDirectory.java:405)
at org.apache.lucene.store.FSDirectory.openFile(FSDirectory.java:268)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:40)
at org.apache.lucene.index.IndexReader$1.doBody(IndexReader.java:116)---> at org.apache.lucene.store.Lock$With.run(Lock.java:109)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:111)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:106)
at org.apache.lucene.search.IndexSearcher.<init>(IndexSearcher.java:43)
at com.bt.Searcher.search(Searcher.java:40)
at com.bt.Searcher.main(Searcher.java:34)
String[] args = { "E:\\test1\\", "txt" };
是不一样的
还是这个错 Exception in thread "main" java.io.FileNotFoundException: E:\test1\segments (系统找不到指定的文件。)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at org.apache.lucene.store.FSInputStream$Descriptor.<init>(FSDirectory.java:376)
at org.apache.lucene.store.FSInputStream.<init>(FSDirectory.java:405)
at org.apache.lucene.store.FSDirectory.openFile(FSDirectory.java:268)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:40)
at org.apache.lucene.index.IndexReader$1.doBody(IndexReader.java:116)
at org.apache.lucene.store.Lock$With.run(Lock.java:109)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:111)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:106)
at org.apache.lucene.search.IndexSearcher.<init>(IndexSearcher.java:43)
at com.bt.Searcher.search(Searcher.java:40)
at com.bt.Searcher.main(Searcher.java:34)
Directory fsDir = FSDirectory.getDirectory(indexDir, false);
indexDir目录是放索引文件的吗???如果创建好的索引文件,有3个(在没有修改,删除,添加索引的话)
这个程序本身不能 创建 你说的那三个 吗?
我没有改 ,目录也没有那个 segments 文件
package com.bt;import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;import java.io.File;
import java.io.IOException;
import java.io.FileReader;
import java.util.Date;/**
* This code was originally written for Erik's Lucene intro java.net article
*/
public class Indexer { public static void main(String[] args1) throws Exception { String[] args = { "E:\\test\\", "E:\\test1\\" };
if (args.length != 2) {
throw new Exception("Usage: java " + Indexer.class.getName()
+ " <index dir> <data dir>");
}
File indexDir = new File(args[0]);
File dataDir = new File(args[1]); long start = new Date().getTime();
int numIndexed = index(indexDir, dataDir);
long end = new Date().getTime(); System.out.println("Indexing " + numIndexed + " files took "
+ (end - start) + " milliseconds");
} public static int index(File indexDir, File dataDir) throws IOException { if (!dataDir.exists() || !dataDir.isDirectory()) {
throw new IOException(dataDir
+ " does not exist or is not a directory");
} IndexWriter writer = new IndexWriter(indexDir, new StandardAnalyzer(),
true);
writer.setUseCompoundFile(false); indexDirectory(writer, dataDir); int numIndexed = writer.docCount();
writer.optimize();
writer.close();
return numIndexed;
} private static void indexDirectory(IndexWriter writer, File dir)
throws IOException { File[] files = dir.listFiles(); for (int i = 0; i < files.length; i++) {
File f = files[i];
if (f.isDirectory()) {
indexDirectory(writer, f); // recurse
} else if (f.getName().endsWith(".txt")) {
indexFile(writer, f);
}
}
} private static void indexFile(IndexWriter writer, File f)
throws IOException { if (f.isHidden() || !f.exists() || !f.canRead()) {
return;
} System.out.println("Indexing " + f.getCanonicalPath()); Document doc = new Document();
doc.add(Field.Text("contents", new FileReader(f)));
doc.add(Field.Keyword("filename", f.getCanonicalPath()));
writer.addDocument(doc);
}
}运行后 Indexing C:\test1\txt.txt
Indexing C:\test1\复件 (2) 3.txt
Indexing C:\test1\复件 (3) 3.txt
Indexing C:\test1\复件 (4) 3.txt
Indexing C:\test1\复件 (5) 3.txt
Indexing C:\test1\复件 (6) 3.txt
Indexing C:\test1\复件 (7) 3.txt
Indexing C:\test1\复件 (8) 3.txt
Indexing C:\test1\复件 3.txt
Indexing 9 files took 171 milliseconds
然后我 执行 Searcher。java 找 txt的 还是找不到,没有报错了Found 0 document(s) (in 10 milliseconds) that matched query 'txt':
java.io.FileNotFoundException: D:\houseSearch\segments (系统找不到指定的文件。)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at org.apache.lucene.store.FSIndexInput$Descriptor.<init>(FSDirectory.java:430)
at org.apache.lucene.store.FSIndexInput.<init>(FSDirectory.java:439)
at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:329)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:45)
at org.apache.lucene.index.IndexReader$1.doBody(IndexReader.java:146)
at org.apache.lucene.store.Lock$With.run(Lock.java:99)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:141)
at org.apache.lucene.index.IndexReader.open(IndexReader.java:125)
at org.apache.lucene.search.IndexSearcher.<init>(IndexSearcher.java:42)
at com.house.search.SearchDao.DoSearch(SearchDao.java:40)
at org.apache.jsp.allHouse_jsp._jspService(allHouse_jsp.java:63)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:864)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1665)
at java.lang.Thread.run(Unknown Source)
===========================================================================
但是在java文件下运行时正确的
在JSP下是找不到segment文件,奇怪了