Lucene在多個索引上進行搜索

　　代碼如下

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package comlucenesearch;

　　import orgapacheluceneanalysisstandardStandardAnalyzer;
import orgapachelucenedocumentDocument;
import orgapachelucenedocumentField;
import orgapacheluceneindexIndexWriter;
import orgapachelucenequeryParserMultiFieldQueryParser;
import orgapachelucenesearchBooleanClause;
import orgapachelucenesearchHits;
import orgapachelucenesearchIndexSearcher;
import orgapachelucenesearchMultiSearcher;
import orgapachelucenesearchQuery;

　　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 {
        Multisearchermultisearcher();
    }

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

　　Document doc = new Document();
        Field f = new Field(bookname 鋼鐵是怎樣煉成的 FieldStoreYES FieldIndexTOKENIZED);
        Field f = new Field(price FieldStoreYES FieldIndexUN_TOKENIZED);

　　docadd(f);
        docadd(f);

　　Document doc = new Document();
        Field f = new Field(bookname 鋼鐵戰士 FieldStoreYES FieldIndexTOKENIZED);
        Field f = new Field(price FieldStoreYES FieldIndexUN_TOKENIZED);

　　docadd(f);
        docadd(f);

　　Document doc = new Document();
        Field f = new Field(bookname 鋼和鐵是兩種不同的元素 FieldStoreYES FieldIndexTOKENIZED);
        Field f = new Field(price FieldStoreYES FieldIndexUN_TOKENIZED);

　　docadd(f);
        docadd(f);

　　writeraddDocument(doc);
        writeraddDocument(doc);
        writeraddDocument(doc);

　　writerclose();

　　//創建第二個索引器
        IndexWriter writer = new IndexWriter(INDEX_STORE_PATH new StandardAnalyzer() true);
        writersetUseCompoundFile(false);

　　Document doc = new Document();
        Field f = new Field(bookname 鋼要比鐵有更多的元素 FieldStoreYES FieldIndexTOKENIZED);
        Field f = new Field(price FieldStoreYES FieldIndexUN_TOKENIZED);

　　docadd(f);
        docadd(f);

　　Document doc = new Document();
        Field f = new Field(bookname 鋼和鐵是兩種重要的金屬 FieldStoreYES FieldIndexTOKENIZED);
        Field f = new Field(price FieldStoreYES FieldIndexUN_TOKENIZED);

　　docadd(f);
        docadd(f);

　　Document doc = new Document();
        Field f = new Field(bookname 鋼鐵是兩種重要的金屬 FieldStoreYES FieldIndexTOKENIZED);
        Field f = new Field(price FieldStoreYES FieldIndexUN_TOKENIZED);

　　docadd(f);
        docadd(f);

　　writeraddDocument(doc);
        writeraddDocument(doc);
        writeraddDocument(doc);

　　writerclose();

　　String query = 鋼;
        String query = [ TO ];//注意格式中括號還有關鍵字TO是大寫的
        String[] queries = { query query };

　　//指定兩個域Field
        String field = bookname;
        String field = price;
        String[] fields = { field field };

　　//指定查詢字句之間的關系
        BooleanClauseOccur[] clauses = { BooleanClauseOccurMUST BooleanClauseOccurMUST };

　　//轉成多域查詢MultiFieldQuery
        Query q = MultiFieldQueryParserparse(queries fields clauses new StandardAnalyzer());

　　//打印Query的內容
        Systemoutprintln(qtoString());

　　//創建兩個IndexSearcher以實現在多個索引目錄進行查詢
        IndexSearcher searcher = new IndexSearcher(INDEX_STORE_PATH);
        IndexSearcher searcher = new IndexSearcher(INDEX_STORE_PATH);

　　IndexSearcher[] searchers = { searcher searcher };

　　//使用MultiSearcher進行多域搜索
        MultiSearcher searcher = new MultiSearcher(searchers);
        Hits hits = searchersearch(q);
        for (int i = ; i < hitslength(); i++) {
            Systemoutprintln(hitsdoc(i));
        }
    }
}

From:http://tw.wingwit.com/Article/program/Java/hx/201311/26839.html