Lucene 6.0下使用IK分词器

Lucene 6.0使用IK分词器需要修改修改IKAnalyzer和IKTokenizer.
使用时先新建一个MyIKTokenizer类,一个MyIkAnalyzer类：

MyIKTokenizer.java

import java.io.IOException;
import java.io.Reader;

import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
import org.wltea.analyzer.core.IKSegmenter;
import org.wltea.analyzer.core.Lexeme;

public class MyIKTokenizer extends Tokenizer {
    // IK分词器实现
    private IKSegmenter _IKImplement;

    // 词元文本属性
    private final CharTermAttribute termAtt;
    // 词元位移属性
    private final OffsetAttribute offsetAtt;
    // 词元分类属性（该属性分类参考org.wltea.analyzer.core.Lexeme中的分类常量）
    private final TypeAttribute typeAtt;
    // 记录最后一个词元的结束位置
    private int endPosition;

    public MyIKTokenizer(Reader in) {
        this(in, false);
    }

    public MyIKTokenizer(Reader in, boolean useSmart) {
        offsetAtt = addAttribute(OffsetAttribute.class);
        termAtt = addAttribute(CharTermAttribute.class);
        typeAtt = addAttribute(TypeAttribute.class);
        _IKImplement = new IKSegmenter(input, useSmart);
    }

    @Override
    public boolean incrementToken() throws IOException {
        // 清除所有的词元属性
        clearAttributes();
        Lexeme nextLexeme = _IKImplement.next();
        if (nextLexeme != null) {
            // 将Lexeme转成Attributes
            // 设置词元文本
            termAtt.append(nextLexeme.getLexemeText());
            // 设置词元长度
            termAtt.setLength(nextLexeme.getLength());
            // 设置词元位移
            offsetAtt.setOffset(nextLexeme.getBeginPosition(),
                    nextLexeme.getEndPosition());
            // 记录分词的最后位置
            endPosition = nextLexeme.getEndPosition();
            // 记录词元分类
            typeAtt.setType(nextLexeme.getLexemeTypeString());
            // 返会true告知还有下个词元
            return true;
        }
        // 返会false告知词元输出完毕
        return false;
    }

    public void reset() throws IOException {
        super.reset();
        _IKImplement.reset(input);
    }

    @Override
    public final void end() {
        // set final offset
        int finalOffset = correctOffset(this.endPosition);
        offsetAtt.setOffset(finalOffset, finalOffset);
    }

}

MyIkAnalyzer.java

package cn.ucas.lucene.ik;

import java.io.Reader;
import java.io.StringReader;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.util.IOUtils;

public class MyIkAnalyzer extends Analyzer {

    @Override
    protected TokenStreamComponents createComponents(String arg0) {
        Reader reader=null;
        try{
            reader=new StringReader(arg0);
            MyIKTokenizer it = new MyIKTokenizer(reader);
            return new Analyzer.TokenStreamComponents(it);
        }finally {
            IOUtils.closeWhileHandlingException(reader);
        }
    }

}

在Lucene中使用IK分词器：

Analyzer myIkAnalyzer=new MyIkAnalyzer();

参考文档：
http://blog.inet198.cn/?upxiaofeng/article/details/51454648