五、在myeclipse中查询与添加索引实例

最新推荐文章于 2021-04-09 17:37:05 发布

原创最新推荐文章于 2021-04-09 17:37:05 发布 · 918 阅读

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#solr #solr配置 #myeclipse与solr #solr索引的添加与查询

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本文介绍如何使用Solr进行数据索引的增删改查操作，并演示了具体的Java代码实现，包括用户验证配置及查询参数设置。

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1.导入相关jar包

注意：jar的版本要根据solr的版本正确导入。

2.插入索引

public class SolrjPopulator {
	public static void main(String[] args) throws IOException, SolrServerException {
		
		  HttpSolrServer server = new HttpSolrServer("http://localhost:8083/solr");
		  
		//======进行用户验证，因为tomcat中设定了用户验证，所以为了能连接服务器必需要验证用户，否则不能连通服务器
		  DefaultHttpClient m_client =(DefaultHttpClient)server.getHttpClient(); 
		  UsernamePasswordCredentials credentials = new UsernamePasswordCredentials("admin","admin");
		  m_client.addRequestInterceptor(new PreemptiveAuthInterceptor(),0);
		  (((DefaultHttpClient)m_client).getCredentialsProvider()).setCredentials(new AuthScope("localhost",8083), credentials);
		//============ 
		  for (int i = 0; i < 3; i++) {
			SolrInputDocument doc = new SolrInputDocument();
			doc.addField("age", "27");
			doc.addField("id", "5"+i);
			doc.addField("name", "小刚子"+i);
			server.add(doc);
//			if (i == 2)
				server.commit(); // periodically flush
		}
		server.commit();
	}
}

3.查询索引

public class SolrJSearcher {
    public static void main(String[] args) throws MalformedURLException, SolrServerException {
        HttpSolrServer solr = new HttpSolrServer("http://localhost:8083/solr/core0");
        
        //====进行用户验证，因为tomcat中设定了用户验证，所以为了能连接服务器必需要验证用户，否则不能连通服务器
         DefaultHttpClient m_client =(DefaultHttpClient)solr.getHttpClient();
          UsernamePasswordCredentials credentials = new UsernamePasswordCredentials("admin","admin");
          m_client.addRequestInterceptor(new PreemptiveAuthInterceptor(),0);
          (((DefaultHttpClient)m_client).getCredentialsProvider()).setCredentials(new AuthScope("localhost",8083), credentials);
        //======
        ModifiableSolrParams params = new ModifiableSolrParams();
        //params.set("q", "name:李*人");
        params.set("q", "id:中国&name:中国");
        params.set("defType", "dismax");
        params.set("hl", "true");
        params.set("hl.fl", "name");
//        params.set("start", "0");
 
        QueryResponse response = solr.query(params);
        SolrDocumentList results = response.getResults();
        for (int i = 0; i < results.size(); ++i) {
            System.out.println(results.get(i));
        }
    }
}

4.用户验证类

public class PreemptiveAuthInterceptor implements HttpRequestInterceptor {

	public void process(HttpRequest request,
			org.apache.http.protocol.HttpContext context) throws HttpException,
			IOException {
		AuthState authState = (AuthState) context
				.getAttribute(ClientContext.TARGET_AUTH_STATE);

		// If no auth scheme avaialble yet, try to initialize it
		// preemptively
		if (authState.getAuthScheme() == null) {
			CredentialsProvider credsProvider = (CredentialsProvider) context
					.getAttribute(ClientContext.CREDS_PROVIDER);
			HttpHost targetHost = (HttpHost) context
					.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
			Credentials creds = credsProvider.getCredentials(new AuthScope(
					targetHost.getHostName(), targetHost.getPort()));
			if (creds == null)
				throw new HttpException(
						"No credentials for preemptive authentication");
			authState.setAuthScheme(new BasicScheme());
			authState.setCredentials(creds);
		}

	}
}