lucene 4.10 basic searcher

PostSearcher.java

package hpcde;

import java.io.File;
import java.io.IOException;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.queryparser.classic.ParseException;
import org.apache.lucene.queryparser.classic.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopScoreDocCollector;
import org.apache.lucene.store.FSDirectory;

public class PostSearcher {
	public static void main(String[] args) throws IOException, ParseException {
		String queryStr = "八";
		String indexPath = "G:\\luceneIndex";
		IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(
				indexPath)));
		IndexSearcher searcher = new IndexSearcher(reader);
		for (int i = 0; i < reader.maxDoc(); i++) {
			Document doc = reader.document(i);
			String mid = doc.get("content");
			System.out.println(mid);
		}

		Analyzer analyzer = new StandardAnalyzer();
		QueryParser parser = new QueryParser("content", analyzer);
		Query q = parser.parse(queryStr);
		TopScoreDocCollector collector = TopScoreDocCollector.create(10, true);
		searcher.search(q, collector);
		ScoreDoc[] hits = collector.topDocs().scoreDocs;
		System.out.println("Found " + hits.length + " hits.");
		for (int i = 0; i < hits.length; ++i) {
			int docId = hits[i].doc;
			Document d = searcher.doc(docId);
			System.out.println((i + 1) + ". " + d.get("content") + "\t"
					+ d.get("mid") + "\t" + d.get("time") + "\t"
					+ d.get("user_sname"));
		}
		reader.close();

	}
}