解决：IKAnalyzer与Lucene版本不兼容问题(由于IKAnalyzer版本一直没有更新)

你的名字 2021-01-22 18:03 1544阅读 0赞

java.lang.AbstractMethodError: org.apache.lucene.analysis.Analyzer.createComponents(Ljava/lang/String;)Lorg/apache/lucene/analysis/Analyzer$TokenStreamComponents;

主要是IKAnalyzer和IKTokenizer两个类有问题  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY0OTk5Nw_size_16_color_FFFFFF_t_70]  
我们这里仿造它们重新写两个类，使用时，将IKAnalyzer改为MyIKAnalyzer即可。

package cn.neu.lucene;
    
    /** * @Author WCJ * @Description **/
    import org.apache.lucene.analysis.Analyzer;
    import org.apache.lucene.analysis.Tokenizer;
    
    public final class MyIKAnalyzer extends Analyzer { 
        private boolean useSmart;
    
        public boolean useSmart() { 
            return this.useSmart;
        }
    
        public void setUseSmart(boolean useSmart) { 
            this.useSmart = useSmart;
        }
    
        public MyIKAnalyzer() { 
            this(false);
        }
    
        @Override
        protected TokenStreamComponents createComponents(String s) { 
            Tokenizer _MyIKTokenizer = new MyIKTokenizer(this.useSmart());
            return new TokenStreamComponents(_MyIKTokenizer);
        }
    
        public MyIKAnalyzer(boolean useSmart) { 
            this.useSmart = useSmart;
        }
    
    }

package cn.neu.lucene;
    
    
    import java.io.IOException;
    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 final class MyIKTokenizer extends Tokenizer { 
        private IKSegmenter _IKImplement;
        private final CharTermAttribute termAtt = (CharTermAttribute)this.addAttribute(CharTermAttribute.class);
        private final OffsetAttribute offsetAtt = (OffsetAttribute)this.addAttribute(OffsetAttribute.class);
        private final TypeAttribute typeAtt = (TypeAttribute)this.addAttribute(TypeAttribute.class);
        private int endPosition;
    
        public MyIKTokenizer(boolean useSmart) { 
            this._IKImplement = new IKSegmenter(this.input, useSmart);
        }
    
        public boolean incrementToken() throws IOException { 
            this.clearAttributes();
            Lexeme nextLexeme = this._IKImplement.next();
            if (nextLexeme != null) { 
                this.termAtt.append(nextLexeme.getLexemeText());
                this.termAtt.setLength(nextLexeme.getLength());
                this.offsetAtt.setOffset(nextLexeme.getBeginPosition(), nextLexeme.getEndPosition());
                this.endPosition = nextLexeme.getEndPosition();
                this.typeAtt.setType(nextLexeme.getLexemeTypeString());
                return true;
            } else { 
                return false;
            }
        }
    
        public void reset() throws IOException { 
            super.reset();
            this._IKImplement.reset(this.input);
        }
    
        public final void end() { 
            int finalOffset = this.correctOffset(this.endPosition);
            this.offsetAtt.setOffset(finalOffset, finalOffset);
        }
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzY0OTk5Nw_size_16_color_FFFFFF_t_70]: /images/1611338598565.png