七、通过java代码实现增量、全量索引

来源：互联网发布：mac hdmi声音输出设置编辑：程序博客网时间：2024/05/22 12:11

前期对solr全文检索已经做了绝大部分的工作，现在剩下的就是如何让索引自动加载，包括全量加载及增量加载。

1.首先要实现自动的全量加载及增量加载就要通过定时任务来实现，这里定时任务的编写不在这里描述。

2.如下是我在项目中的全量、增量加载的代码：

package com.ultrapower.bpm.interfaces;import java.io.IOException;import java.util.Properties;import org.apache.http.auth.AuthScope;import org.apache.http.auth.UsernamePasswordCredentials;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.log4j.Logger;import org.apache.solr.client.solrj.SolrQuery;import org.apache.solr.client.solrj.SolrServerException;import org.apache.solr.client.solrj.impl.HttpSolrServer;import org.apache.solr.client.solrj.response.QueryResponse;import org.apache.solr.client.solrj.response.UpdateResponse;import org.apache.solr.common.SolrDocumentList;import org.apache.solr.common.SolrInputDocument;import org.springframework.core.io.support.PropertiesLoaderUtils;import com.ultrapower.bpm.process.action.ProcessAction;import com.ultrapower.bpm.sheet.manage.PreemptiveAuthInterceptor;public class AddSolrOperator {//======================================读取配置文件中solr的URLpublic static String SOLR_URL = "";public static String SOLR_IP = "";public static String SOLR_PORT = "";private static Logger log = Logger.getLogger(ProcessAction.class);static{try {Properties properties = PropertiesLoaderUtils.loadAllProperties("solrURL.properties");SOLR_URL = properties.getProperty("solr.url");SOLR_IP = properties.getProperty("solr.ip");SOLR_PORT = properties.getProperty("solr.port");} catch (IOException e) {log.error("读取solrURL.properties出现异常!!", e);}}//======================================// private static final String DEFAULT_URL = "http://localhost:8088/solr/"; // http://localhost:8088/solr/collection1/dataimport?command=delta-import&clean=false&commit=true&entity=up_knowledge&optimize=false // http://localhost:8088/solr/collection1/dataimport?command=delta-import&clean=false&commit=true&optimize=false public static HttpSolrServer solr=null ;  @SuppressWarnings("unchecked")public synchronized void scanInterface() throws IOException{ solr= new HttpSolrServer(SOLR_URL);//====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(SOLR_IP,Integer.parseInt(SOLR_PORT)), credentials);        //======//  AddSolrOperator add=new AddSolrOperator();  buildIndex(false);     SolrInputDocument doc = new SolrInputDocument();     try {  } catch (Exception e) {  e.printStackTrace();  }}   /**     * 增量/全量建立索引 。     *      * @param delta false，增量建立索引；true，重建所有索引 * @throws IOException      */    public static void buildIndex(boolean delta) throws IOException {        SolrQuery query = new SolrQuery();        // 指定RequestHandler，默认使用/select        query.setRequestHandler("/dataimport");        String command = delta ? "full-import" : "delta-import";         String clean = delta ? "true" : "false";        String optimize = delta ? "true" : "false";                query.setParam("command", command)             .setParam("clean", false)             .setParam("commit", "true")//             .setParam("entity", "")             .setParam("optimize", optimize);        try {        solr.query(query);        solr.commit();        System.out.println(" ///////////"+command);        } catch (SolrServerException e) {           e.printStackTrace();        }    }}

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