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字符串切分
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?package demo.analysis; |
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?import java.io.IOException; |
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?import jeasy.analysis.MMAnalyzer; |
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?
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?public class Segment? |
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?{ |
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????????
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???? public static void main(String[] args)? |
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???? { |
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???????? String text = "據路透社報道，印度尼西亞社會事務部一官員星期二(29日)表示，" |
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??????????????? + "日惹市附近當地時間27日晨5時53分發生的里氏6.2級地震已經造成至少5427人死亡，" |
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??????????????? + "20000余人受傷，近20萬人無家可歸。";? |
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?????????
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???????? MMAnalyzer analyzer = new MMAnalyzer(); |
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???????? try? |
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???????? { |
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???????????????? System.out.println(analyzer.segment(text, " | ")); |
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???????? }? |
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???????? catch (IOException e)? |
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???????? { |
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???????????????? e.printStackTrace(); |
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???????? } |
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???? } |
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?} |
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?
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| 生成效果： |
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據 | 路透社 | 報道 | 印度尼西亞 | 社會 | 事務 | 部 | 官員 | 星期二 | 29日 | 表示 | 日惹 | 市 |
附近 | 當地時間 | 27日 | 晨 | 5時 | 53分 | 發生 | 里氏 | 6.2級 | 地震 | 已經 | 造成 | 至少 |
5427人 | 死亡 | 20000 | 余人 | 受傷 | 近 | 20萬人 | 無家可歸 |
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Lucene搜索
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?package demo.analysis; |
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?
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?import jeasy.analysis.MMAnalyzer; |
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?
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?import org.apache.lucene.analysis.Analyzer; |
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?import org.apache.lucene.document.Document; |
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?import org.apache.lucene.document.Field; |
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?import org.apache.lucene.index.IndexWriter; |
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?import org.apache.lucene.queryParser.QueryParser; |
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?import org.apache.lucene.search.Hits; |
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?import org.apache.lucene.search.IndexSearcher; |
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?import org.apache.lucene.search.Query; |
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?import org.apache.lucene.store.Directory; |
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?import org.apache.lucene.store.RAMDirectory; |
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?
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?public class Segment? |
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?{ |
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?????
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???? public static void main(String[] args)? |
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???? { |
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???????? String fieldName = "text"; |
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???????? String text = "據路透社報道，印度尼西亞社會事務部一官員星期二(29日)表示，" |
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???????????? + "日惹市附近當地時間27日晨5時53分發生的里氏6.2級地震已經造成至少5427人死亡，" |
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???????????? + "20000余人受傷，近20萬人無家可歸。"; //檢索內容 |
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?
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???????? //采用正向最大匹配的中文分詞算法 |
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???????? Analyzer analyzer = new MMAnalyzer(); |
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?
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???????? Directory directory = new RAMDirectory(); |
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???????? //Directory directory = FSDirectory.getDirectory("/tmp/testindex", true); |
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?
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???????? try |
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????????? { |
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???????????? IndexWriter iwriter = new IndexWriter(directory, analyzer, true); |
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???????????? iwriter.setMaxFieldLength(25000); |
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???????????? Document doc = new Document(); |
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???????????? doc.add(new Field(fieldName, text, Field.Store.YES, Field.Index.TOKENIZED)); |
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???????????? iwriter.addDocument(doc); |
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???????????? iwriter.close(); |
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?????????????
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???????????? IndexSearcher isearcher = new IndexSearcher(directory); |
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???????????? QueryParser parser = new QueryParser(fieldName, analyzer); |
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???????????? Query query = parser.parse("印度尼西亞 6.2級地震");//檢索詞 |
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???????????? Hits hits = isearcher.search(query); |
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???????????? System.out.println("命中：" + hits.length()); |
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?
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???????????? for (int i = 0; i < hits.length(); i++)? |
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???????????? { |
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???????????????? Document hitDoc = hits.doc(i); |
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???????????????? System.out.println("內容：" + hitDoc.get(fieldName)); |
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???????????? } |
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?
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???????????? isearcher.close(); |
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???????????? directory.close(); |
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???????? }? |
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???????? catch (Exception e)? |
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???????? { |
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???????????? e.printStackTrace(); |
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???????? }??? |
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???? } |
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?????
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?} |
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?
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| 生成效果： |
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| 命中：1 |
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內容：據路透社報道，印度尼西亞社會事務部一官員星期二(29日)表示，日惹市附近當地時間27日晨5時53分發生的
里氏6.2級地震已經造成至少5427人死亡，20000余人受傷，近20萬人無家可歸。 |
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搜索詞加亮
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?package demo.analysis; |
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?
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?import jeasy.analysis.MMAnalyzer; |
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?
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?import org.apache.lucene.analysis.Analyzer; |
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?import org.apache.lucene.analysis.TokenStream; |
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?import org.apache.lucene.document.Document; |
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?import org.apache.lucene.document.Field; |
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?import org.apache.lucene.index.IndexReader; |
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?import org.apache.lucene.index.IndexWriter; |
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?import org.apache.lucene.index.TermPositionVector; |
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?import org.apache.lucene.queryParser.QueryParser; |
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?import org.apache.lucene.search.Hits; |
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?import org.apache.lucene.search.IndexSearcher; |
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?import org.apache.lucene.search.Query; |
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?import org.apache.lucene.search.highlight.Highlighter; |
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?import org.apache.lucene.search.highlight.QueryScorer; |
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?import org.apache.lucene.search.highlight.TokenSources; |
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?import org.apache.lucene.store.Directory; |
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?import org.apache.lucene.store.RAMDirectory; |
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?
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?public class Segment |
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?{ |
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?
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???? public static void main(String[] args) |
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???? { |
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???????? String fieldName = "text"; |
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???????? String text = "據路透社報道，印度尼西亞社會事務部一官員星期二(29日)表示，" |
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???????????? + "日惹市附近當地時間27日晨5時53分發生的里氏6.2級地震已經造成至少5427人死亡，" |
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???????????? + "20000余人受傷，近20萬人無家可歸。"; //檢索內容 |
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?
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???????? //采用正向最大匹配的中文分詞算法 |
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???????? Analyzer analyzer = new MMAnalyzer(); |
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?
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???????? Directory directory = new RAMDirectory(); |
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???????? //Directory directory = FSDirectory.getDirectory("/tmp/testindex", true); |
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?
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???????? try |
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???????? { |
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???????????? IndexWriter iwriter = new IndexWriter(directory, analyzer, true); |
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???????????? iwriter.setMaxFieldLength(25000); |
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???????????? Document doc = new Document(); |
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???????????? doc.add(new Field(fieldName, text, Field.Store.YES, |
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???????????????????? Field.Index.TOKENIZED, |
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???????????????????? Field.TermVector.WITH_POSITIONS_OFFSETS)); |
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???????????? iwriter.addDocument(doc); |
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???????????? iwriter.close(); |
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?
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???????????? IndexSearcher isearcher = new IndexSearcher(directory); |
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???????????? QueryParser parser = new QueryParser(fieldName, analyzer); |
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???????????? Query query = parser.parse("印度尼西亞 6.2級地震");//檢索詞 |
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???????????? Hits hits = isearcher.search(query); |
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???????????? System.out.println("命中：" + hits.length()); |
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?
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???????????? Highlighter highlighter = new Highlighter(new QueryScorer(query)); |
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???????????? for (int i = 0; i < hits.length(); i++) |
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???????????? { |
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???????????????? text = hits.doc(i).get(fieldName); |
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???????????????? TermPositionVector tpv = (TermPositionVector) IndexReader.open( |
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???????????????????? directory).getTermFreqVector(hits.id(i), fieldName); |
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???????????????? TokenStream tokenStream = TokenSources.getTokenStream(tpv); |
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???????????????? String result = highlighter.getBestFragments(tokenStream, text, 3, "..."); |
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???????????????? System.out.println("內容：" + result); |
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???????????? } |
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?
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???????????? isearcher.close(); |
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???????????? directory.close(); |
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???????? } |
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???????? catch (Exception e) |
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???????? { |
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???????????? e.printStackTrace(); |
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???????? } |
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???? } |
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?
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?} |
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?
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| 生成效果： |
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| 命中：1 |
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內容：據路透社報道，<B>印度尼西亞</B>社會事務部一官員星期二(29日)表示，日惹市附近當地時間27日晨
5時53分發生的里氏<B>6.2級</B><B>地震</B>已經造成至少5427人死亡，20000余人受傷，近20萬人無家可歸 |