一个封装了StandardTokenizer的自定义Lucene Analyzer

<strong><span style="font-size:18px;">/***
 * @author YangXin
 * @info一个封装了StandardTokenizer的LuceneAnalyzer
 * 带有小写过滤器的MyAnalyzer
 */
package unitTen;

import java.io.Reader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.LengthFilter;
import org.apache.lucene.analysis.LowerCaseFilter;
import org.apache.lucene.analysis.PorterStemFilter;
import org.apache.lucene.analysis.StopFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.standard.StandardTokenizer;
import org.apache.lucene.util.Version;

public class MyAnalyzer extends Analyzer {

	 @SuppressWarnings("deprecation")
	  @Override
	  public TokenStream tokenStream(String fieldName, Reader reader) {
	    TokenStream result = new StandardTokenizer(
	        Version.LUCENE_CURRENT, reader);
	    result = new LowerCaseFilter(result);
	    result = new LengthFilter(result, 3, 50);
	    result = new StopFilter(true, result, StandardAnalyzer.STOP_WORDS_SET);
	    result = new PorterStemFilter(result);
	    return result;
	  }

}
</span></strong>