lucene:全文检索lucene学习笔记( 4)

　　有关查询

　　1.TermQuery:

package com.lucene.search;
　　
import java.io.File;
import java.io.IOException;
　　
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
　　
public TermQuerySearcher {
public void (String args) throws IOException, ParseException {
　　
　File indexDir = File("C:　　estindex");
　Directory fsDir　= FSDirectory.getDirectory(indexDir);
　IndexSearcher searcher = IndexSearcher(fsDir);
　
　String q = "ERROR";
　Term t = Term("contents", q.toLowerCase);
　Query query = TermQuery(t);
//　QueryParser parser = QueryParser("contents", StandardAnalyzer);
//　Query query = parser.parse(q);
　Hits hits = searcher.search(query);
　
　.out.prln("共有" + searcher.maxDoc + "条索引命中" + hits.length + "条");
　for( i=0; i<hits.length; i) {
　 DocId = hits.id(i);
　String DocPath = hits.doc(i).get("filename");
　.out.prln(DocId + ":" + DocPath);
　}
}
}

　　2.RangeQuery:

package com.lucene.search;
　　
import java.io.File;
import java.io.IOException;
　　
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.RangeQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
　　
public RangeQuerySearcher {
　　
public void (String args) throws IOException, ParseException {
　　
　File indexDir = File("C:　　estindex");
　Directory fsDir　= FSDirectory.getDirectory(indexDir);
　IndexSearcher searcher = IndexSearcher(fsDir);
　String b = "2007";
　String e = "2008";
　Term begin = Term("contents", b);
　Term end = Term("contents", e);
　RangeQuery query = RangeQuery(begin, end, true);
//　QueryParser parser = QueryParser("contents", StandardAnalyzer);
//　Query query = parser.parse("[2007 TO 2008]");
　Hits hits = searcher.search(query);
　
　.out.prln("共有" + searcher.maxDoc + "条索引命中" + hits.length + "条");
　for( i=0; i<hits.length; i) {
　 DocId = hits.id(i);
　String DocPath = hits.doc(i).get("filename");
　.out.prln(DocId + ":" + DocPath);
　}
}
}

　　3.BooleanQuery:

package com.lucene.search;
　　
import java.io.File;
import java.io.IOException;
　　
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.RangeQuery;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
　　
public BooleanQuerySearcher {
　　
public void (String args) throws IOException, ParseException {
　　
　File indexDir = File("C:　　estindex");
　Directory fsDir　= FSDirectory.getDirectory(indexDir);
　IndexSearcher searcher = IndexSearcher(fsDir);
　
　Query tq = TermQuery( Term("contents", "ERROR".toLowerCase));
　RangeQuery rq = RangeQuery( Term("contents", "2007"), Term("contents", "2008"), true);
　BooleanQuery query = BooleanQuery;
　query.add(tq, BooleanClause.Occur.MUST);
　query.add(rq, BooleanClause.Occur.MUST);
//　QueryParser parser = QueryParser("contents", StandardAnalyzer);
//　Query query = parser.parse("error AND [2007 TO 2008]");
　Hits hits = searcher.search(query);
　
　.out.prln("共有" + searcher.maxDoc + "条索引命中" + hits.length + "条");
　for( i=0; i<hits.length; i) {
　 DocId = hits.id(i);
　String DocPath = hits.doc(i).get("filename");
　.out.prln(DocId + ":" + DocPath);
　}
}
}

　　4.PrefixQuery

package com.lucene.search;
　　
import java.io.File;
import java.io.IOException;
　　
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
　　
public PrefixQuerySearcher {
　　
public void (String args) throws IOException, ParseException {
　　
　File indexDir = File("C:　　estindex");
　Directory fsDir　= FSDirectory.getDirectory(indexDir);
　IndexSearcher searcher = IndexSearcher(fsDir);
　
　String q = "20";
　Term t = Term("contents", q.toLowerCase);
　PrefixQuery query = PrefixQuery(t);
//　QueryParser parser = QueryParser("contents", StandardAnalyzer);
//　Query query = parser.parse(q + "*");
　Hits hits = searcher.search(query);
　
　.out.prln("共有" + searcher.maxDoc + "条索引命中" + hits.length + "条");
　for( i=0; i<hits.length; i) {
　 DocId = hits.id(i);
　String DocPath = hits.doc(i).get("filename");
　.out.prln(DocId + ":" + DocPath);
　}
}
}

　　5.PhraseQuery

package com.lucene.search;
　　
import java.io.File;
import java.io.IOException;
　　
import org.apache.lucene.index.Term;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.PhraseQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
　　
public PhraseQuerySearcher {
　　
public void (String args) throws IOException {
　
　File indexDir = File("C:　　estindex");
　Directory fsDir　= FSDirectory.getDirectory(indexDir);
　IndexSearcher searcher = IndexSearcher(fsDir);
　
　String phrase = {"ERROR".toLowerCase, "TEST".toLowerCase};
　PhraseQuery query = PhraseQuery;
　query.Slop(1);
　for ( i = 0; i < phrase.length; i) {
　query.add( Term("contents", phrase[i]));
　}
　Hits hits = searcher.search(query);
　
　.out.prln("共有" + searcher.maxDoc + "条索引命中" + hits.length + "条");
　for( i=0; i<hits.length; i) {
　 DocId = hits.id(i);
　String DocPath = hits.doc(i).get("filename");
　.out.prln(DocId + ":" + DocPath);
　}
}
}

　　6.WildcardQuery

package com.lucene.search;
　　
import java.io.File;
import java.io.IOException;
　　
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.WildcardQuery;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
　　
public WildcardQuerySearcher {
　　
public void (String args) throws IOException, ParseException {
　
　File indexDir = File("C:　　estindex");
　Directory fsDir　= FSDirectory.getDirectory(indexDir);
　IndexSearcher searcher = IndexSearcher(fsDir);
　
　Query query = WildcardQuery( Term("contents", "?ER*".toLowerCase));
//
//　QueryParser parser = QueryParser("contents", StandardAnalyzer);
//　Query query = parser.parse("?ER*".toLowerCase);
//
　Hits hits = searcher.search(query);
　
　.out.prln("共有" + searcher.maxDoc + "条索引命中" + hits.length + "条");
　for( i=0; i<hits.length; i) {
　 DocId = hits.id(i);
　String DocPath = hits.doc(i).get("filename");
　.out.prln(DocId + ":" + DocPath);
　}
}
}

　　7.FuzzyQuery

package com.lucene.search;
　　
import java.io.File;
import java.io.IOException;
　　
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.FuzzyQuery;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
　　
public FuzzyQuerySearcher {
　　
public void (String args) throws IOException, ParseException {
　
　File indexDir = File("C:　　estindex");
　Directory fsDir　= FSDirectory.getDirectory(indexDir);
　IndexSearcher searcher = IndexSearcher(fsDir);
　
　Query query = FuzzyQuery( Term("contents", "XERRORX".toLowerCase));
　//QueryParser parser = QueryParser("contents", StandardAnalyzer);
　//Query query = parser.parse("ERROR~".toLowerCase);
　Hits hits = searcher.search(query);
　
　.out.prln("共有" + searcher.maxDoc + "条索引命中" + hits.length + "条");
　for( i=0; i<hits.length; i) {
　 DocId = hits.id(i);
　String DocPath = hits.doc(i).get("filename");
　.out.prln(DocId + ":" + DocPath);
　}
}
}



　　参考资料:http://www.dlog.cn/nicholascoder/diary/8881

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