import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.wltea.analyzer.lucene.IKAnalyzer;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Properties;
//枚举单例方式创建Lucene的工具类
public enum LuceneUtils {
INSTANCE;
private LuceneUtils(){}
private static String indexPath;
public Analyzer analyzer = new IKAnalyzer();
//静态库为静态成员变量初始化值
static{
try {
Properties properties = new Properties();
properties.load(LuceneUtils.class.getClassLoader().getResourceAsStream("lucene.properties"));
indexPath = properties.getProperty("lucenen.indexpath");
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 获取IndexWriter
* @return
* @throws IOException
*/
public IndexWriter getIndexWriter() throws IOException {
//获取IndexWriter
Directory directory = getDirectory();
IndexWriterConfig config = new IndexWriterConfig(analyzer);
IndexWriter indexWriter = new IndexWriter(directory,config);
return indexWriter;
}
/**
* 获取IndexReader
* @return
* @throws IOException
*/
public IndexReader getIndexReader() throws IOException {
Directory directory = getDirectory();
IndexReader reader = DirectoryReader.open(directory);
return reader;
}
/**
* 获取Directory
* @return
* @throws IOException
*/
private Directory getDirectory() throws IOException {
Path path = Paths.get(indexPath);
return FSDirectory.open(path);
}
}
