How to search indexes using lucene?

To search through indexes using your java code is easy. You can search through your indexes created by lucene using lucene API. Lucene-core-2.2.0.jar.

Following is the code usage showing how to search through lucene index.

IndexReader reader = null;

reader = IndexReader.open("C:\\var\\lucene\\indexes\\Document"); (path of your lucene index i.e. segments.gen)

Searcher searcher = new IndexSearcher(reader);

Analyzer analyzer = new StandardAnalyzer();

MultiFieldQueryParser parser = new MultiFieldQueryParser(new String[]{"content", "title", "description"}, analyzer); ('content','title','description' are the fields which we want to search in index)

Query query = parser.parse('searchString');

Hits hits = searcher.search(query);

Once you get the hits object you can find any data that is saved in index using the hits object.