?? sorttest2.java
字號(hào):
package ch13;
import org.apache.lucene.store.*;
import org.apache.lucene.document.*;
import org.apache.lucene.analysis.*;
import org.apache.lucene.index.*;
import org.apache.lucene.search.*;
import org.apache.lucene.queryParser.*;
class SortTest2
{
public static void main(String[] args)
{
try
{
//生成索引目錄
Directory directory = new RAMDirectory();
//生成分析器
Analyzer analyzer = new SimpleAnalyzer();
//生成索引書寫器
IndexWriter writer = new IndexWriter(directory, analyzer, true);
//將要進(jìn)行檢索的文本內(nèi)容
String[] docs =
{
"a b c d e",
"a b c d e a b c d e",
"a b c d e f g h i j",
"a c e",
"e c a",
"a c e a c e",
"a c e a b c"
};
//循環(huán)遍歷檢索檢索結(jié)果
for (int j = 0; j < docs.length; j++)
{
//取得文檔
Document d = new Document();
//添加檢索內(nèi)容
d.add(Field.Text("contents", docs[j]));
//添加進(jìn)索引
writer.addDocument(d);
}
//關(guān)閉索引
writer.close();
//生成檢索對(duì)象
Searcher searcher = new IndexSearcher(directory);
//備用檢索的字符串
String[] queries = {
"\"a b\"",
// "\"a b c\"",
// "\"a c\"",
// "\"a c e\"",
};
//保存檢索結(jié)果
Hits hits = null;
//生成檢索對(duì)象
QueryParser parser = new QueryParser("contents", analyzer);
//依次進(jìn)行檢索
for (int j = 0; j < queries.length; j++)
{
//生成檢索對(duì)象
Query query = parser.parse(queries[j]);
//
System.out.println("Query: " + query.toString("contents"));
//返回檢索結(jié)果
hits = searcher.search(query,Sort.RELEVANCE);
//生成排序類
//Sort sort = new Sort();
//hits = searcher.search(query,sort);
System.out.println(hits.length() + " total results");
//遍歷返回的檢索結(jié)果
for (int i = 0 ; i < hits.length() && i < 10; i++)
{
//取得文檔
Document d = hits.doc(i);
//
System.out.println(i + " " + hits.score(i)+ " " + d.get("contents"));
}
}
//關(guān)閉檢索器
searcher.close();
} catch (Exception e)
{
//
System.out.println(" caught a " + e.getClass() +
"\n with message: " + e.getMessage());
}
}
}
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