lucene 3.5 例子

在开始学习lucene时，在网上找到很多的例子，全部是早期的版本，在lucene3.5时，好多方法已不推荐使用，所以就自己写了个例子，方便大家学习

1，创建一个实体类

package com.yutel.lucene;

public class ContactInfo {
    private int id;
    private String FirstName;
    private String LastName;
    public ContactInfo() {
    }
    public ContactInfo(int id, String firstName, String lastName) {
        this.id = id;
        FirstName = firstName;
        LastName = lastName;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getFirstName() {
        return FirstName;
    }
    public void setFirstName(String firstName) {
        FirstName = firstName;
    }
    public String getLastName() {
        return LastName;
    }
    public void setLastName(String lastName) {
        LastName = lastName;
    }
}

2，索引的操作类

package com.yutel.lucene;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.IndexWriterConfig.OpenMode;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
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.store.FSDirectory;
import org.apache.lucene.util.Version;

public class ContactInfoSearcher {
    private static final File INDEX_DIR = new File("d:\\temp\\index");
    private static final Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_35);
    /**
     * 在索引库中进行查询
     * @param fieldName
     * @param criteria
     * @return
     * @throws CorruptIndexException
     * @throws IOException
     * @throws ParseException
     */
    public List<ContactInfo> search(String fieldName, String criteria)
            throws CorruptIndexException, IOException, ParseException {
        IndexReader reader = IndexReader.open(FSDirectory.open(INDEX_DIR));
        IndexSearcher searcher = new IndexSearcher(reader);
        List<ContactInfo> list = new ArrayList<ContactInfo>();
        try {
            Query query = buildQuery(fieldName, criteria);
            TopDocs topDocs = searcher.search(query, 10);
            int total = topDocs.totalHits;
            System.out.println("total=" + total);
            ScoreDoc[] scoreDocs = topDocs.scoreDocs;
            for (int i = 0; i < scoreDocs.length; i++) {
                Document doc = searcher.doc(scoreDocs[i].doc);
                ContactInfo info = new ContactInfo();
                info.setId(Integer.valueOf(doc.get("id")));
                info.setFirstName(doc.get("firstName"));
                info.setLastName(doc.get("lastName"));
                list.add(info);
            }
            return list;
        } finally {
            searcher.close();
        }
    }
     /**
      * 将联系方式添加到索引库中
      * @param list
      * @throws IOException
      */
    public void index(List<ContactInfo> list) throws IOException {
        IndexWriter writer = openIndexWriter();
        try {
            for (ContactInfo contact : list) {
                Document document = builderDocument(contact);
                writer.addDocument(document);
            }
        } finally {
            writer.close();
        }
    }

    private IndexWriter openIndexWriter() throws IOException {
        IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_35,
                analyzer);
        iwc.setOpenMode(OpenMode.CREATE);
        return new IndexWriter(FSDirectory.open(INDEX_DIR), iwc);
    }

    private Document builderDocument(ContactInfo contact) {
        Document document = new Document();
        Field id = new Field("id", String.valueOf(contact.getId()),
                Field.Store.YES, Field.Index.ANALYZED);
        Field firstName = new Field("firstName", contact.getFirstName(),
                Field.Store.YES, Field.Index.ANALYZED);
        Field lastName = new Field("lastName", contact.getLastName(),
                Field.Store.YES, Field.Index.ANALYZED);
        document.add(id);
        document.add(firstName);
        document.add(lastName);
        return document;
    }

    private Query buildQuery(String fieldName, String criteria)
            throws ParseException, CorruptIndexException, IOException {
        QueryParser parser = new QueryParser(Version.LUCENE_35, fieldName,
                analyzer);
        return parser.parse(criteria);
    }

}

3，测试类

package com.yutel.lucene;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.queryParser.ParseException;

public class ContactTest {

    public static void main(String[] args) {
        ContactTest t = new ContactTest();
        t.init();
        t.search();
    }

    public void search() {
        ContactInfoSearcher cis = new ContactInfoSearcher();
        try {
            List<ContactInfo> list = cis.search("lastName", "军");
            if (list.size() > 0) {
                System.out.println("找到:" + list.size() + "个结果! ");
                for (ContactInfo info : list) {
                    System.out.println("id=" + info.getId() + ",name="
                            + info.getFirstName() + info.getLastName());
                }
            } else {
                System.out.println("没有找到结果");
            }
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        }
    }

    public void init() {
        List<ContactInfo> list = new ArrayList<ContactInfo>();
        list.add(new ContactInfo(1, "孙", "定军"));
        list.add(new ContactInfo(2, "袁", "亚军"));
        list.add(new ContactInfo(3, "王", "明慧"));
        list.add(new ContactInfo(4, "王", "磊军"));
        list.add(new ContactInfo(3, "陈", "晓稽"));
        list.add(new ContactInfo(3, "乌", "红毅"));
        list.add(new ContactInfo(3, "李", "建英"));
        ContactInfoSearcher cis = new ContactInfoSearcher();
        try {
            cis.index(list);
            System.out.println("add complate");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}