SolrJ example

Search.java

public class SimpleSolrSearch {
    private String solrUrl = "http://192.168.1.103:8983/solr/auctions";
    private SolrServer server;
    
    public SimpleSolrSearch() {
        server = new HttpSolrServer(solrUrl);
    }
    
    public Collection<Integer> search(String searchTerms, String category, BigDecimal maxBidAmount) throws SolrServerException {
        SolrQuery query = new SolrQuery();
        String categoryFilter = "category:\"" + category + "\"";
        query.addFilterQuery(categoryFilter);
        query.addFilterQuery("current_bid:[1 TO " + maxBidAmount.doubleValue() + "]");
        query.setQuery(searchTerms);     

        QueryResponse response = server.query(query);
        
        SolrDocumentList documentList = response.getResults();
        List<Integer> auctionIds = new ArrayList<>();
        for(SolrDocument doc : documentList) {
            int listingId = Integer.parseInt((String)doc.getFirstValue("auction_id"));
            auctionIds.add(listingId);
        }
        return auctionIds;
    }
}