出于某种原因,我无法从我的有效索引3552项目中找到任何结果。无法从PhraseQuery或WildcardQuery的有效索引中找到任何结果?
请看下面的代码,当我运行它时,后面跟着程序的控制台输出。 是索引文件的数量。 /c:/test/stuff.txt是作为测试从文档5中检索的正确的索引路径。底部的所有文本都是测试文件的全文(在XML类型输出中)。我错过了什么,我的简单查询不会产生结果?
也许我的WildcardQuery语法不好?我认为这将是低效的(由于在开始和结束的通配符),但它至少会返回从该指数文件...
import java.io.File;
import java.io.IOException;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Fieldable;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.WildcardQuery;
import org.apache.lucene.store.FSDirectory;
public class Searcher
{
/**
* @param args
* @throws IOException
* @throws CorruptIndexException
*/
public static void main(String[] args) throws CorruptIndexException, IOException
{
System.out.println("Begin searching test...");
IndexSearcher searcher = new IndexSearcher(FSDirectory.open(new File(args[0])));
// termContainsWildcard is shown to be true here when debugging
// numberOfTerms is 0
WildcardQuery query = new WildcardQuery(new Term("contents", "*stuff*"));
System.out.println("Query field is: " + query.getTerm().field());
System.out.println("Query field contents is: " + query.getTerm().text());
TopDocs results = searcher.search(query, 5000);
// no results returned :(
System.out.println("Total results from index " + args[0] + ": " + results.totalHits);
for (ScoreDoc sd : results.scoreDocs)
{
System.out.println("Document matched. Number: " + sd.doc);
}
System.out.println();
System.out.println("Begin reading test...");
// now read from the index to see if I am crazy
IndexReader reader = IndexReader.open(FSDirectory.open(new File(args[0])));
// correctly shows the number of documents in the local index
System.out.println("Number of indexed documents: " + reader.numDocs());
// pick out a random, small document and check its fields
Document d = reader.document(5);
for (Fieldable f : d.getFields())
{
System.out.println("Field name is: " + f.name());
System.out.println(new String(f.getBinaryValue()));
}
}
}
控制台输出运行时
开始搜索测试...
查询字段是:内容
查询字段内容为:*stuff*
从指数C总的结果:\索引2:0
开始阅读测试...
索引的文件数量:3552
字段名称是:路径
/c:/test/stuff.txt
字段名称是:内容
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="Content-Length" content="8"/>
<meta name="Content-Encoding" content="UTF-8"/>
<meta name="Content-Type" content="text/plain"/>
<meta name="resourceName" content="stuff.txt"/>
<title/>
</head>
<body>
<p>stuff
</p>
</body>
</html>
由于您的Luke建议,我能够弄清楚这一点!您是正确的 - 没有实际标记化的二进制字段。对于一个新手来说很令人困惑。 – asteroid 2011-05-26 18:59:56