@Test

    public void testSelect() {

        String url = "http://localhost:8081/solr/solrcore";

        SolrClient client = new HttpSolrClient.Builder(url).build();

        SolrQuery query = new SolrQuery();

        query.set("q", "id:*");  //查询条件

        query.set("fl", "id");  //查询的项目

        query.setStart(0);  //起始index

        query.setRows(50);  //终了index

        query.set("sort", "id asc"); //sort key指定

        try {

            // 返回QueryResponse

            QueryResponse response = client.query(query);

            client.close();

            // 返回Document

            SolrDocumentList docs = response.getResults();

            docs.forEach((x) -> {

                System.out.println("-------------" + x.get("id"));

            });

        } catch (SolrServerException | IOException e) {

            e.printStackTrace();

        }

    }

http://localhost:8081/solr/index.html