全文はファイルに保存されたデータを取得します.簡単な例です.
1、索引の作成
2、検索を実行する
3、コントローラ
package com.dream.index;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.demo.html.HTMLParser;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.htmlparser.Parser;
/**
*
*
*/
public class IndexMgr {
private String dataDir = "";//
private String indexDir = "";//
public IndexMgr(){}
/**
*
* @param dataDir
* @param indexDir
*/
public IndexMgr(String dataDir,String indexDir){
this.dataDir = dataDir;
this.indexDir = indexDir;
}
/**
*
* @throws IOException
* @throws InterruptedException
*/
public boolean createIndex() throws IOException, InterruptedException{
// if(isIndexExist()){//
// return true;
// }
File dir = new File(dataDir);
if(!dir.exists()){
return false;
}
File[] htmls = dir.listFiles();
//
//Directory fsDirectory = FSDirectory.getDirectory(indexDir, true);
//
Analyzer analyzer = new StandardAnalyzer();
// Document
IndexWriter indexWriter = new IndexWriter(this.indexDir,analyzer,true);
for (int i = 0; i < htmls.length; i++) {
String htmlPath = htmls[i].getAbsolutePath();
addDocument(htmlPath, indexWriter);
}
indexWriter.optimize();
indexWriter.close();
return true;
}
/**
* Document
* @throws InterruptedException
* @throws IOException
*/
public void addDocument(String filePath,IndexWriter indexWriter) throws IOException, InterruptedException{
String content = readFileByLines(filePath);
Document document = new Document();
document.add(new Field("title",content,Field.Store.YES,Field.Index.TOKENIZED));
indexWriter.addDocument(document);
}
public String readFileByLines(String fileName){
File file = new File(fileName);
BufferedReader reader = null;
StringBuffer retString = new StringBuffer();
try {
reader = new BufferedReader(new FileReader(file));
String tempString = null;
int line = 1;
//һ�ζ���һ�У�ֱ������nullΪ�ļ�����
while ((tempString = reader.readLine()) != null){
//��ʾ�к�
retString.append(tempString);
retString.append("
");
line++;
}
reader.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null){
try {
reader.close();
} catch (IOException e1) {
}
}
}
return retString.toString();
}
/**
*
* @param indexDir
*/
public boolean isIndexExist(){
File directory = new File(indexDir);
if(directory.listFiles().length > 0){
return true;
}else{
return false;
}
}
public String getDataDir() {
return dataDir;
}
public void setDataDir(String dataDir) {
this.dataDir = dataDir;
}
public String getIndexDir() {
return indexDir;
}
public void setIndexDir(String indexDir) {
this.indexDir = indexDir;
}
}
2、検索を実行する
package com.dream.index;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.demo.html.HTMLParser;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.htmlparser.Parser;
/**
*
*
*/
public class IndexMgr {
private String dataDir = "";//
private String indexDir = "";//
public IndexMgr(){}
/**
*
* @param dataDir
* @param indexDir
*/
public IndexMgr(String dataDir,String indexDir){
this.dataDir = dataDir;
this.indexDir = indexDir;
}
/**
*
* @throws IOException
* @throws InterruptedException
*/
public boolean createIndex() throws IOException, InterruptedException{
// if(isIndexExist()){//
// return true;
// }
File dir = new File(dataDir);
if(!dir.exists()){
return false;
}
File[] htmls = dir.listFiles();
//
//Directory fsDirectory = FSDirectory.getDirectory(indexDir, true);
//
Analyzer analyzer = new StandardAnalyzer();
// Document
IndexWriter indexWriter = new IndexWriter(this.indexDir,analyzer,true);
for (int i = 0; i < htmls.length; i++) {
String htmlPath = htmls[i].getAbsolutePath();
addDocument(htmlPath, indexWriter);
}
indexWriter.optimize();
indexWriter.close();
return true;
}
/**
* Document
* @throws InterruptedException
* @throws IOException
*/
public void addDocument(String filePath,IndexWriter indexWriter) throws IOException, InterruptedException{
String content = readFileByLines(filePath);
Document document = new Document();
document.add(new Field("title",content,Field.Store.YES,Field.Index.TOKENIZED));
indexWriter.addDocument(document);
}
public String readFileByLines(String fileName){
File file = new File(fileName);
BufferedReader reader = null;
StringBuffer retString = new StringBuffer();
try {
reader = new BufferedReader(new FileReader(file));
String tempString = null;
int line = 1;
//һ�ζ���һ�У�ֱ������nullΪ�ļ�����
while ((tempString = reader.readLine()) != null){
//��ʾ�к�
retString.append(tempString);
retString.append("
");
line++;
}
reader.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null){
try {
reader.close();
} catch (IOException e1) {
}
}
}
return retString.toString();
}
/**
*
* @param indexDir
*/
public boolean isIndexExist(){
File directory = new File(indexDir);
if(directory.listFiles().length > 0){
return true;
}else{
return false;
}
}
public String getDataDir() {
return dataDir;
}
public void setDataDir(String dataDir) {
this.dataDir = dataDir;
}
public String getIndexDir() {
return indexDir;
}
public void setIndexDir(String indexDir) {
this.indexDir = indexDir;
}
}
3、コントローラ
package com.dream.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import sun.rmi.server.Dispatcher;
import com.dream.index.IndexMgr;
import com.dream.search.SearchMgr;
public class ToSearch extends HttpServlet {
public ToSearch() {
super();
}
public void destroy() {
super.destroy();
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String keyword = request.getParameter("keyword");
List searchResult = new ArrayList();
SearchMgr searchMgr = new SearchMgr(keyword);
IndexMgr indexMgr = new IndexMgr();
//
indexMgr.setDataDir("D:\\dataDir");
//
indexMgr.setIndexDir("D:\\indexDir");
searchMgr.setIndexMgr(indexMgr);
searchResult = searchMgr.search();
request.setAttribute("searchResult", searchResult);
RequestDispatcher rdp = request.getRequestDispatcher("index.jsp");
rdp.forward(request, response);
}
public void init() throws ServletException {
}
}