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Lucene查询方式总结

时间:2015-04-04 16:53:06      阅读:151      评论:0      收藏:0      [点我收藏+]

标签:lucene

--------------------------------------------------
IndexReader的设计
--------------------------------------------------

IndexReader的创建需要消耗大量内存空间,
所以通过将IndexReader设计出属性值,进行一次创建

整个项目周期就只有一个IndexReader


1.// IndexReader的设计

private static IndexReader reader = null;
2.在构造方法中对IndexReader进行初始化
// 创建indexReader
reader = IndexReader.open(directory);
3.创建getSearch()方法,返回IndexSearch
private static IndexSearcher getSearch() {
return new IndexSearcher(reader);
}
4.最后在使用IndexReader完毕后,只需要关闭IndexSearch
// 最后只需要关闭search

search.close();


PS:
因此此IndexReader属于单例模式,在IndexReader过程中如果改变IndexWriter的索引,IndexReader所search出的数据将不会改变,除非重新构建一个新的IndexReader
代码优化:

// 优化

try {
	if (reader == null) {
	reader = IndexReader.open(directory);
	//reader = IndexReader.open(directory,false);  //不设置为只读的reader
	} else {
	// 如果Index索引改变了将返回一个新的reader,否则将返回null
	IndexReader read = IndexReader.openIfChanged(reader);
	if (read != null) {
                //把原来的reader给close()掉
	reader.close();
	reader = read;
		}
	}
	return new IndexSearcher(reader);
	} catch (CorruptIndexException e) {
			e.printStackTrace();
} catch (IOException e) {
			e.printStackTrace();
}
	return null;




//因为此时Reader已经为全局范围,用reader也能删除文档
/*
 * 使用reader删除,会立即更新索引信息(但不建议)
*/

// reader.deleteDocuments(new Term("id","1"));
// reader.close();
有时候整个项目周期中只有一个IndexWriter
这时候,IndexWriter就不能关闭
那么怎么提交呢?
使用IndexWriter.commit()方法提交对索引操作后的数据


--------------------------------------------------------
Directory的几种操作方式
--------------------------------------------------------
FSDirectory.open()。。系统会根据具体运行环境使用最佳方式打开一个Directory
new RAMDirectory()。。就是将索引存储在内存中。好处:速度快。坏处:不能持久化
RAMDirectory(Directory dir)。也可以将一个持久化好的directory放入内存中。



-------------------------------------------------------
lucene的搜索_TermRange等基本搜索
-------------------------------------------------------
1.创建IndexSearch
/*
* 创建IndexSearch的方法
*/

	public IndexSearcher getSearch() {
		try {
			if (reader == null) {
				reader = IndexReader.open(directory);
			} else {
				IndexReader read = IndexReader.openIfChanged(reader);
				if (read != null) {
					reader.close();
					reader = read;
				}
			}
			return new IndexSearcher(reader);
		} catch (CorruptIndexException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}


2.查询的几种
======精确查询:

IndexSearcher search = getSearch();
Query query = new TermQuery(new Term(field, name));
TopDocs tds = search.search(query, num);
for (ScoreDoc sdc : tds.scoreDocs) {
   Document doc = search.doc(sdc.doc);
}
search.close();


======基于字符串的范围查询(TermRange)
// true表示闭区间

IndexSearcher search = getSearch();
Query query = new TermRangeQuery(field, start, end, true, true);
TopDocs tds = search.search(query, num);
System.out.println("一共查询了:" + tds.totalHits);


======基于数字的范围查询(NumericRangeQuery.new...)
IndexSearcher search = getSearch(); 
// true表示闭区间
Query query = NumericRangeQuery.newIntRange(field, start, end,true, true);
TopDocs tds = search.search(query, num);
System.out.println("一共查询了:" + tds.totalHits);



======PS:tds.totalHits是总记录数,与我们传入的num,没有任何关系
eg:

   // 基于范围的查询(参数:传入的field,开始字符,结束字符,显示数目)
public void SearchByTermRange(String field, String start, String end,int num) {
		try {
			IndexSearcher search = getSearch();
			// 范围查询
			// true表示闭区间(是否包含开始字符和结束字符,默认为true)
			Query query = new TermRangeQuery(field, start, end, true, true);
			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}






-----------------------------------------------------------------
lucene的搜索_其他常用Query搜索
-----------------------------------------------------------------
======前缀搜索(prefixquery)
Query query = new PrefixQuery(new Term(field, value));


======通配符搜索(wildcardquery)
Query query = new WildcardQuery(new Term(field, value));
//使用方法
sutil.SearchByWildCard("name", "l*", 3);
在传入的value中可以使用通配符? 和 * 
?表示匹配一个字符,*表示匹配任意多个字符。可以在任何位置使用。



=======可以连接多个条件(BooleanQuery)
BooleanQuery query = new BooleanQuery();
// Occur.Must表必须 
//Occur.SHOULD表示可有可无 
//Occur.MUST_NOT表示必须没有
query.add(new TermQuery(new Term("name", "lili")), Occur.MUST);
query.add(new TermQuery(new Term("content", "hello")), Occur.MUST);


=======短语查询(phrasequery)
PhraseQuery query = new PhraseQuery();
// setSlop()设置跳数,及两个单词之间有几个单词
query.setSlop(1);
// 设置field字段,即哪两个单词
// 第一个term
query.add(new Term("content", "i"));
// 产生距离后的第二个term
query.add(new Term("content", "basketball"));


======模糊查询(FuzzyQuery)

//会匹配有一个字符出错的情况

Query query=new FuzzyQuery(new Term("name", "mirk"));



-------------------------------------------------------------
lucene的搜索_基于QueryParser的搜索
-------------------------------------------------------------
//基于字符串操作
		public void SearchByQueryParse(Query query,int num){
			try {
				IndexSearcher search = getSearch();
				
				TopDocs tds = search.search(query, num);
				System.out.println("一共查询了:" + tds.totalHits);
				for (ScoreDoc sdc : tds.scoreDocs) {
					Document doc = search.doc(sdc.doc);
					System.out.println(sdc.doc + doc.get("name") + "["
							+ doc.get("email") + "," + doc.get("id") + ","
							+ doc.get("attach") + "]");
				}
				search.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}


//使用query查询(创建queryparser,再通过queryparser创建query)
                                // 1.创建Parse对象(设置默认搜索域为content)
		QueryParser parse = new QueryParser(Version.LUCENE_35, "content",new StandardAnalyzer(Version.LUCENE_35));
		// 改变空格的默认操作(改为AND型)
		parse.setDefaultOperator(Operator.AND);
		// 开启第一个字符的通配符匹配(*xxx,?xxx),默认关闭,因为效率比较低
		parse.setAllowLeadingWildcard(true);
		// 2.通过parse生成query(搜索content域中包含有like的)
		Query query = parse.parse("like");
		// 能够一直加条件(空格默认就是OR)
		query = parse.parse("basketball i");
		// 改变搜索域(域:值)
		query = parse.parse("name:mark");
		// 同样能进行*或?的通配符匹配(通配符默认不能放在首位)
		query = parse.parse("name:*i");
		// name中不包含mark,但是content中包含basketball(-和+必须放在域说明的前面)
		query = parse.parse("- name:mark + basketball");
		// id的1~3(TO表示一个闭区间,TO必须是大写的)
		query = parse.parse("id:[1 TO 3]");
		// {}表示1~3的开区间匹配
		query = parse.parse("id:{1 TO 3}");
		// name域值是lili或mark,默认域值是game
		query = parse.parse("name:(lili OR mark) AND game");
		// 两个‘’号表示短语匹配
		query = parse.parse("'i like basketball'");
		// 表示i basketball之间有一个单词遗漏的匹配
		query = parse.parse("\"i basketball\"~1");
		// 加个~就能模糊查询mark
		query = parse.parse("name:mirk~");
		// 没有办法匹配数字范围(自己扩展parse)
		query = parse.parse("attach:[1 TO 3]");
		sutil.SearchByQueryParse(query, 5);




------------------------------------------------------------
简单分页搜索

------------------------------------------------------------
Lucene通过再查询的方式:将所有数据取出,再进行分段分页
3.5以后使用的是searchAfter
//第一种分页方式(通过取出全部数据,再通过start和end对数据进行分页)

	public void searchPage(String query,int pageIndex,int pageSize) {
		try {
			Directory dir = FileIndexUtils.getDirectory();
			IndexSearcher searcher = getSearcher(dir);
			QueryParser parser = new QueryParser(Version.LUCENE_35,"content",new StandardAnalyzer(Version.LUCENE_35));
			Query q = parser.parse(query);
			TopDocs tds = searcher.search(q, 500);
			ScoreDoc[] sds = tds.scoreDocs;
			int start = (pageIndex-1)*pageSize;
			int end = pageIndex*pageSize;
			for(int i=start;i<end;i++) {
				Document doc = searcher.doc(sds[i].doc);
				System.out.println(sds[i].doc+":"+doc.get("path")+"-->"+doc.get("filename"));
			}
			
			searcher.close();
		} catch (org.apache.lucene.queryParser.ParseException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}




-----------------------------------------------------------
lucene的搜索_基于searchAfter的实现(Lucene3.5之后)
-----------------------------------------------------------
/**
  * 根据页码和分页大小获取上一次的最后一个ScoreDoc
*/

private ScoreDoc getLastScoreDoc(int pageIndex,int pageSize,Query query,IndexSearcher searcher) throws IOException {
		if(pageIndex==1)return null;//如果是第一页就返回空
		int num = pageSize*(pageIndex-1);//获取上一页的数量
                                //每次只取上面所有的元素
		TopDocs tds = searcher.search(query, num);
		return tds.scoreDocs[num-1];
	}
	
	public void searchPageByAfter(String query,int pageIndex,int pageSize) {
		try {
			Directory dir = FileIndexUtils.getDirectory();
			IndexSearcher searcher = getSearcher(dir);
			QueryParser parser = new QueryParser(Version.LUCENE_35,"content",new StandardAnalyzer(Version.LUCENE_35));
			Query q = parser.parse(query);
			//先获取上一页的最后一个元素
			ScoreDoc lastSd = getLastScoreDoc(pageIndex, pageSize, q, searcher);
			//通过最后一个元素搜索下页的pageSize个元素
			TopDocs tds = searcher.searchAfter(lastSd,q, pageSize);
			for(ScoreDoc sd:tds.scoreDocs) {
				Document doc = searcher.doc(sd.doc);
				System.out.println(sd.doc+":"+doc.get("path")+"-->"+doc.get("filename"));
			}
			searcher.close();
		} catch (org.apache.lucene.queryParser.ParseException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}



代码片段

package test.lucene.index;

import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.NumericField;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.FuzzyQuery;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.PhraseQuery;
import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TermRangeFilter;
import org.apache.lucene.search.TermRangeQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.WildcardQuery;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.Version;

public class SearchUtil {
	/*
	 * 假设6个文档
	 */
	private String[] ids = { "1", "2", "3", "4", "5", "6" };
	private String[] emails = { "aa@qq.com", "bb@sina.com", "cc@163.com",
			"dd@google.com", "ee@baidu.com", "ff@heima.com" };
	private String[] contents = { "hello boy,i like pingpang", "like boy",
			"xx bye i like swim", "hehe, i like basketball",
			"dd fsfs, i like movie", "hello xxx,i like game" };
	private int[] attachs = { 2, 3, 1, 4, 5, 5 };
	private String[] names = { "lili", "wangwu", "lisi", "jack", "tom", "mark" };
	// 设置加权map
	private Map<String, Float> scores = new HashMap<String, Float>();

	private Directory directory;
	private IndexReader reader;

	public SearchUtil() {
		directory = new RAMDirectory();
	}

	/*
	 * 添加索引
	 */
	public void index() {
		IndexWriter writer = null;
		try {

			writer = new IndexWriter(directory, new IndexWriterConfig(
					Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
			writer.deleteAll();
			// 创建documents
			Document document = null;
			for (int i = 0; i < ids.length; i++) {
				document = new Document();
				document.add(new Field("id", ids[i], Field.Store.YES,
						Field.Index.NOT_ANALYZED_NO_NORMS));
				document.add(new Field("email", emails[i], Field.Store.YES,
						Field.Index.NOT_ANALYZED)); // 不分词
				document.add(new Field("content", contents[i], Field.Store.NO,
						Field.Index.ANALYZED));
				document.add(new Field("name", names[i], Field.Store.YES,
						Field.Index.NOT_ANALYZED));
				// 为数字添加索引
				document.add(new NumericField("attach", Field.Store.YES, true)
						.setIntValue(attachs[i]));
				/*
				 * document.setBoost(float) 设置评级
				 */
				String et = emails[i].substring(emails[i].lastIndexOf("@") + 1);
				// System.out.println(et);
				if (scores.containsKey(et)) {
					document.setBoost(scores.get(et));
				} else {
					document.setBoost(0.5f);
				}

				writer.addDocument(document);
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (writer != null) {
				try {
					writer.close();
					writer = null;
				} catch (IOException e) {
					e.printStackTrace();
				}

			}
		}

	}

	/*
	 * 创建IndexSearch的方法
	 */
	public IndexSearcher getSearch() {
		try {
			if (reader == null) {
				reader = IndexReader.open(directory);
			} else {
				IndexReader read = IndexReader.openIfChanged(reader);
				if (read != null) {
					reader.close();
					reader = read;
				}
			}
			return new IndexSearcher(reader);
		} catch (CorruptIndexException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}

	// 精确匹配查询
	public void SearchByTerm(String field, String name, int num) {
		try {
			IndexSearcher search = getSearch();
			Query query = new TermQuery(new Term(field, name));
			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// 基于字符串的范围的查询
	public void SearchByTermRange(String field, String start, String end,
			int num) {
		try {
			IndexSearcher search = getSearch();
			// 范围查询
			// true表示闭区间
			Query query = new TermRangeQuery(field, start, end, true, true);
			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// 基于数字的范围的查询
	public void SearchByNumricRange(String field, int start, int end, int num) {
		try {
			IndexSearcher search = getSearch();
			// 范围查询
			// true表示闭区间
			Query query = NumericRangeQuery.newIntRange(field, start, end,
					true, true);
			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// 前缀搜索
	public void SearchByPrefix(String field, String value, int num) {
		try {
			IndexSearcher search = getSearch();
			Query query = new PrefixQuery(new Term(field, value));
			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// 通配符搜索
	public void SearchByWildCard(String field, String value, int num) {
		try {
			IndexSearcher search = getSearch();
			Query query = new WildcardQuery(new Term(field, value));
			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// 多个条件搜索
	public void SearchByBoolean(int num) {
		try {
			IndexSearcher search = getSearch();
			BooleanQuery query = new BooleanQuery();
			// Occur.Must表必须 Occur.SHOULD表示可有可无 Occur.MUST_NOT表示必须没有
			query.add(new TermQuery(new Term("name", "lili")), Occur.MUST);
			query.add(new TermQuery(new Term("content", "hello")), Occur.MUST);

			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	// 短语查询
	public void SearchByPhrase(int num) {
		try {
			IndexSearcher search = getSearch();
			PhraseQuery query = new PhraseQuery();
			// setSlop()设置跳数,及两个单词之间有几个单词
			query.setSlop(1);
			// 设置field字段,即哪两个单词
			query.add(new Term("content", "i"));
			query.add(new Term("content", "basketball"));

			TopDocs tds = search.search(query, num);
			System.out.println("一共查询了:" + tds.totalHits);
			for (ScoreDoc sdc : tds.scoreDocs) {
				Document doc = search.doc(sdc.doc);
				System.out.println(sdc.doc + doc.get("name") + "["
						+ doc.get("email") + "," + doc.get("id") + ","
						+ doc.get("attach") + "]");
			}
			search.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	// 模糊查询
		public void SearchByFuzzy(int num) {
			try {
				IndexSearcher search = getSearch();
				Query query=new FuzzyQuery(new Term("name", "mirk"));
				
				TopDocs tds = search.search(query, num);
				System.out.println("一共查询了:" + tds.totalHits);
				for (ScoreDoc sdc : tds.scoreDocs) {
					Document doc = search.doc(sdc.doc);
					System.out.println(sdc.doc + doc.get("name") + "["
							+ doc.get("email") + "," + doc.get("id") + ","
							+ doc.get("attach") + "]");
				}
				search.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		
	//基于字符串操作
		public void SearchByQueryParse(Query query,int num){
			try {
				IndexSearcher search = getSearch();
				
				TopDocs tds = search.search(query, num);
				System.out.println("一共查询了:" + tds.totalHits);
				for (ScoreDoc sdc : tds.scoreDocs) {
					Document doc = search.doc(sdc.doc);
					System.out.println(sdc.doc + doc.get("name") + "["
							+ doc.get("email") + "," + doc.get("id") + ","
							+ doc.get("attach") + "]");
				}
				search.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
}
package test.lucene.index;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.queryParser.QueryParser.Operator;
import org.apache.lucene.search.Query;
import org.apache.lucene.util.Version;
import org.junit.Before;
import org.junit.Test;

public class SearchTest {
	private SearchUtil sutil;

	@Before
	public void init() throws Exception {
		sutil = new SearchUtil();
	}

	@Test
	public void searchByterm() {
		sutil.index();
		sutil.SearchByTerm("name", "mark", 3);
	}

	@Test
	public void searchByRangeTerm() {
		sutil.index();
		sutil.SearchByTermRange("id", "1", "3", 10);
		// 查询name以a开头和s结尾的
		sutil.SearchByTermRange("name", "a", "s", 10);
		// 由于attach是数字类型,使用termrange无法查询
		sutil.SearchByTermRange("attach", "1", "5", 10);
	}

	@Test
	public void searchByNumricRange() {
		sutil.index();
		// 由于attach是数字类型,使用NumricRange进行查询
		sutil.SearchByNumricRange("attach", 2, 5, 10);
	}

	@Test
	public void searchByPrefix() {
		sutil.index();
		// 前缀搜索
		sutil.SearchByPrefix("name", "l", 3);
	}

	@Test
	public void searchByWildCard() {
		sutil.index();
		// 通配符搜索
		sutil.SearchByWildCard("name", "l*", 3);
	}

	@Test
	public void searchByBoolean() {
		sutil.index();
		// 多条件查询
		sutil.SearchByBoolean(3);
	}

	@Test
	public void searchByPhrase() {
		sutil.index();
		// 短语查询
		sutil.SearchByPhrase(5);
	}

	@Test
	public void searchByFuzzy() {
		sutil.index();
		// 模糊查询
		sutil.SearchByFuzzy(5);
	}

	@Test
	public void searchByqueryParse() throws Exception {
		sutil.index();
		// 1.创建Parse对象(设置默认搜索域为content)
		QueryParser parse = new QueryParser(Version.LUCENE_35, "content",
				new StandardAnalyzer(Version.LUCENE_35));
		// 改变空格的默认操作(改为AND型)
		parse.setDefaultOperator(Operator.AND);
		// 开启第一个字符的通配符匹配(*xxx,?xxx),默认关闭,因为效率比较低
		parse.setAllowLeadingWildcard(true);
		// 2.通过parse生成query(搜索content域中包含有like的)
		Query query = parse.parse("like");
		// 能够一直加条件(空格默认就是OR)
		query = parse.parse("basketball i");
		// 改变搜索域(域:值)
		query = parse.parse("name:mark");
		// 同样能进行*或?的通配符匹配(通配符默认不能放在首位)
		query = parse.parse("name:*i");
		// name中不包含mark,但是content中包含basketball(-和+必须放在域说明的前面)
		query = parse.parse("- name:mark + basketball");
		// id的1~3(TO表示一个闭区间,TO必须是大写的)
		query = parse.parse("id:[1 TO 3]");
		// {}表示1~3的开区间匹配
		query = parse.parse("id:{1 TO 3}");
		// name域值是lili或mark,默认域值是game
		query = parse.parse("name:(lili OR mark) AND game");
		// 两个‘’号表示短语匹配
		query = parse.parse("'i like basketball'");
		// 表示i basketball之间有一个单词遗漏的匹配
		query = parse.parse("\"i basketball\"~1");
		// 加个~就能模糊查询mark
		query = parse.parse("name:mirk~");
		// 没有办法匹配数字范围(自己扩展parse)
		query = parse.parse("attach:[1 TO 3]");
		sutil.SearchByQueryParse(query, 5);
	}
}



Lucene查询方式总结

标签:lucene

原文地址:http://blog.csdn.net/u010366796/article/details/44872993

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