知识大全 Lucene在多个索引上进行搜索

Posted 2022-07-14 索引

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　　代码如下

　　view plaincopy to clipboardprint?package lucene search;

　　import apache lucene analysis standard StandardAnalyzer;import apache lucene document Document;import apache lucene document Field;import apache lucene index IndexWriter;import apache lucene queryParser MultiFieldQueryParser;import apache lucene search BooleanClause;import apache lucene search Hits;import apache lucene search IndexSearcher;import apache lucene search MultiSearcher;import apache lucene search Query;

　　public class Multisearcher

　　private static String INDEX_STORE_PATH = C:\\\\multi\\\\ ; private static String INDEX_STORE_PATH = C:\\\\multi\\\\ ;

　　public static void main(String[] args) throws Exception Multisearcher multisearcher();

　　public static void multisearcher() throws Exception IndexWriter writer = new IndexWriter(INDEX_STORE_PATH new StandardAnalyzer() true); writer setUseCompoundFile(false);

　　Document doc = new Document(); Field f = new Field( bookname 钢铁是怎样炼成的 Field Store YES Field Index TOKENIZED); Field f = new Field( price Field Store YES Field Index UN_TOKENIZED);

　　doc add(f ); doc add(f );

　　Document doc = new Document(); Field f = new Field( bookname 钢铁战士 Field Store YES Field Index TOKENIZED); Field f = new Field( price Field Store YES Field Index UN_TOKENIZED);

　　doc add(f ); doc add(f );

　　Document doc = new Document(); Field f = new Field( bookname 钢和铁是两种不同的元素 Field Store YES Field Index TOKENIZED); Field f = new Field( price Field Store YES Field Index UN_TOKENIZED);

　　doc add(f ); doc add(f );

　　writer addDocument(doc ); writer addDocument(doc ); writer addDocument(doc );

　　writer close();

　　//创建第二个索引器 IndexWriter writer = new IndexWriter(INDEX_STORE_PATH new StandardAnalyzer() true); writer setUseCompoundFile(false);

　　Document doc = new Document(); Field f = new Field( bookname 钢要比铁有更多的元素 Field Store YES Field Index TOKENIZED); Field f = new Field( price Field Store YES Field Index UN_TOKENIZED);

　　doc add(f ); doc add(f );

　　Document doc = new Document(); Field f = new Field( bookname 钢和铁是两种重要的金属 Field Store YES Field Index TOKENIZED); Field f = new Field( price Field Store YES Field Index UN_TOKENIZED);

　　doc add(f ); doc add(f );

　　Document doc = new Document(); Field f = new Field( bookname 钢铁是两种重要的金属 Field Store YES Field Index TOKENIZED); Field f = new Field( price Field Store YES Field Index UN_TOKENIZED);

　　doc add(f ); doc add(f );

　　writer addDocument(doc ); writer addDocument(doc ); writer addDocument(doc );

　　writer close();

　　String query = 钢 ; String query = [ TO ] ;//注意格式中括号还有关键字TO是大写的 String[] queries = query query ;

　　//指定两个域Field String field = bookname ; String field = price ; String[] fields = field field ;

　　//指定查询字句之间的关系 BooleanClause Occur[] clauses = BooleanClause Occur MUST BooleanClause Occur MUST ;

　　//转成多域查询MultiFieldQuery Query q = MultiFieldQueryParser parse(queries fields clauses new StandardAnalyzer());

　　//打印Query的内容 System out println(q toString());

　　//创建两个IndexSearcher 以实现在多个索引目录进行查询 IndexSearcher searcher = new IndexSearcher(INDEX_STORE_PATH ); IndexSearcher searcher = new IndexSearcher(INDEX_STORE_PATH );

　　IndexSearcher[] searchers = searcher searcher ;

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