lucene 中一个Filed中包含多值的范围查询
直接上代码：
package tools.lucene;import java.io.File;import org.apache.lucene.analysis.Analyzer;import org.apache.lucene.analysis.PerFieldAnalyzerWrapper;import org.apache.lucene.analysis.WhitespaceAnalyzer;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.document.NumericField;import org.apache.lucene.index.IndexReader;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.search.IndexSearcher;import org.apache.lucene.search.NumericRangeQuery;import org.apache.lucene.search.Query;import org.apache.lucene.search.ScoreDoc;import org.apache.lucene.search.Searcher;import org.apache.lucene.search.TopDocs;import org.apache.lucene.store.FSDirectory;import org.wltea.analyzer.lucene.IKAnalyzer;public class LuceneIndexWriter {public static String index_path="D:\\ix";public static String index_path2="D:\\ix2";public static void main(String[]args) throws Exception{ createMultiValueIndex();//createIndex(); //词范围查询，但需要将价格字符串格式化，按位数对此，前面补0//TermRangeQuery trquery = new TermRangeQuery("price", "088", "100",true, true);//按数字类型范围查询Query trquery = NumericRangeQuery.newIntRange("price", 1, 99,true, true);//IndexReader indexReader = IndexReader.open(FSDirectory.open(new File(index_path)));IndexReader indexReader = IndexReader.open(FSDirectory.open(new File(index_path2)));Searcher searcher = new IndexSearcher(indexReader);TopDocs topDocs = searcher.search(trquery,100);for (ScoreDoc hits:topDocs.scoreDocs){Document doc = searcher.doc(hits.doc);System.out.println("doc = "+doc.getValues("price"));}}/** * document包含多个同名price Filed */private static void createMultiValueIndex() {Analyzer analyzer = new IKAnalyzer();PerFieldAnalyzerWrapper perFieldAnalyzerWrapper = new PerFieldAnalyzerWrapper(analyzer);try {//perFieldAnalyzerWrapper.addAnalyzer("price", new WhitespaceAnalyzer());IndexWriter writer = new IndexWriter(FSDirectory.open(new File(index_path2)), perFieldAnalyzerWrapper, true,IndexWriter.MaxFieldLength.LIMITED);Document doc = new Document();000doc.add(new Field("hotelName", "test2", Field.Store.YES, Field.Index.ANALYZED));doc.add(new NumericField("price", Field.Store.YES, true).setIntValue(100));doc.add(new NumericField("price", Field.Store.YES, true).setIntValue(200));doc.add(new NumericField("price", Field.Store.YES, true).setIntValue(300));writer.addDocument(doc);doc = new Document();doc.add(new Field("hotelName", "test3", Field.Store.YES, Field.Index.ANALYZED)); //增加多个同名字段(price)doc.add(new NumericField("price", Field.Store.YES, true).setIntValue(99));doc.add(new NumericField("price", Field.Store.YES, true).setIntValue(213));writer.addDocument(doc);doc = new Document();doc.add(new Field("hotelName", "test1", Field.Store.YES, Field.Index.ANALYZED));doc.add(new NumericField("price", Field.Store.YES, true).setIntValue(400));doc.add(new NumericField("price", Field.Store.YES, true).setIntValue(200));writer.addDocument(doc);writer.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}/** * price中价格按照空格分隔，保存到一个field */private static void createIndex() {Analyzer analyzer = new IKAnalyzer();PerFieldAnalyzerWrapper perFieldAnalyzerWrapper = new PerFieldAnalyzerWrapper(analyzer);try {perFieldAnalyzerWrapper.addAnalyzer("price", new WhitespaceAnalyzer());IndexWriter writer = new IndexWriter(FSDirectory.open(new File(index_path)), perFieldAnalyzerWrapper, true,IndexWriter.MaxFieldLength.LIMITED);Document doc = new Document();doc.add(new Field("hotelName", "test2", Field.Store.YES, Field.Index.ANALYZED));doc.add(new Field("price", "100 200 300", Field.Store.YES, Field.Index.ANALYZED));writer.addDocument(doc);doc = new Document();doc.add(new Field("hotelName", "test1", Field.Store.YES, Field.Index.ANALYZED));doc.add(new Field("price", "400 500", Field.Store.YES, Field.Index.ANALYZED));writer.addDocument(doc);doc = new Document();doc.add(new Field("hotelName", "test8", Field.Store.YES, Field.Index.ANALYZED)); //price字段以空格分隔，使用WhitespaceAnalyzer分词doc.add(new Field("price", "213 588 099 ", Field.Store.YES, Field.Index.ANALYZED));writer.addDocument(doc);doc = new Document();doc.add(new Field("hotelName", "test3", Field.Store.YES, Field.Index.ANALYZED));doc.add(new Field("price", "600 700 518", Field.Store.YES, Field.Index.ANALYZED));writer.addDocument(doc);doc = new Document();doc.add(new Field("hotelName", "test4", Field.Store.YES, Field.Index.ANALYZED));doc.add(new Field("price", "200 228 518", Field.Store.YES, Field.Index.ANALYZED));writer.addDocument(doc);writer.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}