使用Solrj在SOLR中增强字段

import org.apache.solr.client.solrj.SolrClient;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.apache.solr.client.solrj.response.SolrResponse;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrInputDocument;

public class SolrJExample {
  public static void main(String[] args) throws SolrServerException {
    // 创建SolrClient实例
    SolrClient solr = new SolrClient("http://localhost:8983/solr");

    // 创建SolrInputDocument对象
    SolrInputDocument document = new SolrInputDocument();

    // 添加字段
    document.addField("id", "1");
    document.addField("title", "Example Title");
    document.addField("description", "This is an example description");

    // 添加文档
    solr.add(document);

    // 查询增强字段
    SolrQuery query = new SolrQuery();
    query.addFilterQuery("id:1");
    query.addSortField("title", SolrQuery.ORDER.asc);
    QueryResponse response = solr.query(query);
    SolrDocument document = response.getResults().get(0);
    String title = document.getFieldValue("title");

    // 删除字段
    document.removeField("description");
    solr.update(document);

    // 更新文档
    document.setField("title", "New Title");
    solr.update(document);

    // 添加文档
    document = new SolrInputDocument();
    document.addField("id", "2");
    document.addField("title", "New Title");
    document.addField("description", "This is a new description");
    solr.add(document);

    // 查询增强字段
    query = new SolrQuery();
    query.addFilterQuery("id:2");
    query.addSortField("title", SolrQuery.ORDER.asc);
    response = solr.query(query);
    document = response.getResults().get(0);
    title = document.getFieldValue("title");
  }
}