Lucene索引操作，刪除，更新，優化

IndexUtil.java
import java.io.File;
import java.io.IOException;

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.Term;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.LockObtainFailedException;
import org.apache.lucene.util.Version;


public class IndexUtil {
    private String[] ids = {"1","2","3","4","5","6"};
    private String[] emails = {"[email protected]","[email protected]","[email protected]","[email protected]","[email protected]","[email protected]"};
    private String[] content ={
            "Welcome to my home",
            "Hello Kenan",
            "Good morning",
            "Are you OK?",
            "Yeah hahahahahahaha",
            "I like foot ball"
    };
    private int[] attachs = {1,4,6,2,3,8};
    private String[] names = {"zhangsan","kenan","soukenan","Micheal","Liangchengpeng","Jah"};
    //詞典
    private Directory directory = null;
    //寫入筆
    private IndexWriter writer = null;
    //文檔對象
    private Document doc = null;
    //讀取對象
    private IndexReader reader = null;
    public IndexUtil(){
        try {
            this.directory = FSDirectory.open(new File("d:/lucene/index02"));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    /**
     * 構建索引
     */
    public void buildIndex(){
        try {
            writer = new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_36)));
            for(int i=0;i<6;i++){
                doc = new Document();
                doc.add(new Field ("id",ids[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
                doc.add(new Field("email",emails[i],Field.Store.YES,Field.Index.NOT_ANALYZED));
                doc.add(new Field("content",this.content[i],Field.Store.NO,Field.Index.ANALYZED));
                doc.add(new Field("name",this.names[i],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
                writer.addDocument(doc);
            }
        } catch (CorruptIndexException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            if(writer != null ){
                try {
                    writer.close();
                } catch (CorruptIndexException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

    }
    /**
     * 查詢文檔信息
     */
    public void query(){
        try {
            this.reader = IndexReader.open(directory);
            System.out.println("maxDoc:"+reader.maxDoc());
            System.out.println("numDocs:"+reader.numDocs());
            System.out.println("delDocs:"+reader.numDeletedDocs());

        } catch (CorruptIndexException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    /**
     * 刪除文檔
     */
    public void deleteIndex(){
        try {
            writer = new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
//          writer.deleteAll();//刪除所有索引
            writer.deleteDocuments(new Term("id","1")); //刪除到回收站
            //刪除id索引爲1的記錄
            //也可以傳一個query對象
//          writer.deleteDocuments(query);
        } catch (CorruptIndexException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            if(writer!=null){
                try {
                    writer.close();
                } catch (CorruptIndexException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

    }
    /**
     * 恢復刪除文檔
     */
    public void unDeleteIndex(){
        try {
            reader = IndexReader.open(directory,false);
            reader.undeleteAll();//回覆所有被刪除的文檔
        } catch (CorruptIndexException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            if(reader!=null){
                try {
                    reader.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }

    public void forceDelete(){
        try {
            writer = new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));

            writer.forceMergeDeletes();//刪除回收站中的內容
        } catch (CorruptIndexException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            if(writer!=null){
                try {
                    writer.close();
                } catch (CorruptIndexException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * 文檔索引更新
     */
    public void merge(){
        try {
            writer = new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
             //消耗資源，不建議使用
            writer.forceMerge(2);
        } catch (CorruptIndexException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            if(writer!=null){
                try {
                    writer.close();
                } catch (CorruptIndexException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
    /**
     * 更新文檔
     */
    public void update(){
        try {
            writer = new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_36)));
            doc = new Document();
            doc.add(new Field ("id","10",Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
            doc.add(new Field("email","email",Field.Store.YES,Field.Index.NOT_ANALYZED));
            doc.add(new Field("content","content",Field.Store.NO,Field.Index.ANALYZED));
            doc.add(new Field("name","names",Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
            writer.updateDocument(new Term("id","3"), doc);
        } catch (CorruptIndexException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally{
            if(writer != null ){
                try {
                    writer.close();
                } catch (CorruptIndexException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

    }
}
測試類TestCase.java
import static org.junit.Assert.*;

import org.junit.BeforeClass;
import org.junit.Test;


public class TestCase {

    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
    }

    @Test
    public void testBuildIndex() {
        new IndexUtil().buildIndex();
    }
    @Test
    public void testQuery(){
        new IndexUtil().query();
    }

    @Test
    public void testDeleteIndex(){
        new IndexUtil().deleteIndex();
    }

    @Test
    public void testUnDeleteIndex(){
        new IndexUtil().unDeleteIndex();
    }

    @Test
    public void testForceDelete(){
        new IndexUtil().forceDelete();
    }

    @Test
    public void testMerge(){
        new IndexUtil().merge();
    }

    @Test
    public void testUpdate(){
        new IndexUtil().update();
    }
}

 

本文出自 “Kenan_ITBlog” 博客，請務必保留此出處http://soukenan.blog.51cto.com/5130995/1120058