Solr使用solr4J操作索引库
Solrj是Solr搜索服务器的一个比较基础的客户端工具，可以非常方便地与Solr搜索服务器进行交互。最基本的功能就是管理Solr索引，包括添加、更新、删除和查询等。对于一些比较基础的应用，用Solj基本够用，而且你可以非常容易地通过使用Solrj的API实现与Solr搜索服务器进行交互，实现对Solr的基本管理功能。如果你的应用比较复杂，可以扩展Solrj来满足需要。
Solrj是Solr搜索服务器的一个比较基础的客户端工具，可以非常方便地与Solr搜索服务器进行交互。最基本的功能就是管理Solr索引，包括添加、更新、删除和查询等。对于一些比较基础的应用，用Solj基本够用，而且你可以非常容易地通过使用Solrj的API实现与Solr搜索服务器进行交互，实现对Solr的基本管理功能。如果你的应用比较复杂，可以扩展Solrj来满足需要。
使用 SolrJ操作索引库：
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package com.hcm.solr.test;import java.io.IOException;import java.util.ArrayList;import java.util.Iterator;import java.util.List;import java.util.Map;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;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.SolrDocument;import org.apache.solr.common.SolrDocumentList;import org.apache.solr.common.SolrInputDocument;import org.apache.solr.common.params.ModifiableSolrParams;import org.junit.Before;import org.junit.Test;import com.hcm.solr.entity.Message;public class SolrTest { private static Log logger = LogFactory.getLog(SolrTest.class); private static final String URL = "http://127.0.0.1:8086/solr"; private HttpSolrServer server = null; @Before public void init() { // 创建 server server = new HttpSolrServer(URL); } /** * 添加文档 */ @Test public void addDoc() { SolrInputDocument doc = new SolrInputDocument(); doc.addField("id", "11"); doc.addField("title", "this is my document !!"); try { UpdateResponse response = server.add(doc); // 提交 server.commit(); logger.info("########## Query Time :" + response.getQTime()); logger.info("########## Elapsed Time :" + response.getElapsedTime()); logger.info("########## Status :" + response.getStatus()); } catch (SolrServerException | IOException e) { logger.error("", e); } } /** * 添加多个文档 */ @Test public void addDocs() { String[] titles = new String[] { "aaaaaaa", "bbbbbbb", "ccccccc", "dddddd", "eeeeee" }; List<SolrInputDocument> docs = new ArrayList<SolrInputDocument>(); int i = 0; for (String str : titles) { SolrInputDocument doc = new SolrInputDocument(); doc.addField("id", i++); doc.addField("title", str); docs.add(doc); } try { UpdateResponse response = server.add(docs); server.commit(); logger.info("########## Query Time :" + response.getQTime()); logger.info("########## Elapsed Time :" + response.getElapsedTime()); logger.info("########## Status :" + response.getStatus()); } catch (SolrServerException | IOException e) { logger.error("", e); } } /** * 添加一个Entity到索引库 */ @Test public void addBean() { Message msg = new Message("1001", "What is Fluentd?", new String[] { "Fluentd is an open source data collector for unified logging layer", "Fluentd allows you to unify data collection and consumption for a better use and understanding of data.", "Fluentd decouples data sources from backend systems by providing a unified logging layer in between.", "Fluentd proves you can achieve programmer happiness and performance at the same time. A great example of Ruby beyond the Web.", "Fluentd to differentiate their products with better use of data." }); try { UpdateResponse response = server.addBean(msg); server.commit(); logger.info("########## Query Time :" + response.getQTime()); logger.info("########## Elapsed Time :" + response.getElapsedTime()); logger.info("########## Status :" + response.getStatus()); } catch (SolrServerException | IOException e) { logger.error("", e); } } /** * 添加多个Entity到索引库 */ @Test public void addBeans() { List<Message> msgs = new ArrayList<Message>(); Message msg = new Message("1001", "What is Fluentd?", new String[] { "Fluentd is an open source data collector for unified logging layer", "Fluentd allows you to unify data collection and consumption for a better use and understanding of data.", "Fluentd decouples data sources from backend systems by providing a unified logging layer in between.", "Fluentd proves you can achieve programmer happiness and performance at the same time. A great example of Ruby beyond the Web.", "Fluentd to differentiate their products with better use of data." }); Message msg2 = new Message("1002", "What is Fluentd?", new String[] { "Fluentd is an open source data collector for unified logging layer", "Fluentd allows you to unify data collection and consumption for a better use and understanding of data.", "Fluentd decouples data sources from backend systems by providing a unified logging layer in between.", "Fluentd proves you can achieve programmer happiness and performance at the same time. A great example of Ruby beyond the Web.", "Fluentd to differentiate their products with better use of data." }); msgs.add(msg); msgs.add(msg2); try { UpdateResponse response = server.addBeans(msgs); server.commit(); logger.info("########## Query Time :" + response.getQTime()); logger.info("########## Elapsed Time :" + response.getElapsedTime()); logger.info("########## Status :" + response.getStatus()); } catch (SolrServerException | IOException e) { logger.error("", e); } } /** * 删除索引 */ @Test public void deleteDoc() { try { server.deleteById("0"); server.commit(); } catch (SolrServerException | IOException e) { logger.error("", e); } } /** * 更新索引<br> * solr索引库不同于数据库，没有更新的功能。如果想更新，先通过id删除对应的文档，再添加新的文档。 */ @Test public void updateDoc() { // ... ... } /** * 查询 */ @Test public void testQuery() { String queryStr = "*:*"; SolrQuery params = new SolrQuery(queryStr); params.set("rows", 10); try { QueryResponse response = server.query(params); SolrDocumentList list = response.getResults(); logger.info("########### 总共 ： " + list.getNumFound() + "条记录"); for (SolrDocument doc : list) { logger.info("######### id : " + doc.get("id") + " title : " + doc.get("title")); } } catch (SolrServerException e) { logger.error("", e); } } /** * 简单查询(分页) */ @Test public void querySimple() { ModifiableSolrParams params = new ModifiableSolrParams(); params.set("q", "this my"); params.set("q.op", "and"); params.set("start", 0); params.set("rows", 5); params.set("fl", "*,score"); try { QueryResponse response = server.query(params); SolrDocumentList list = response.getResults(); logger.info("########### 总共 ： " + list.getNumFound() + "条记录"); for (SolrDocument doc : list) { logger.info("######### id : " + doc.get("id") + " title : " + doc.get("title")); } } catch (SolrServerException e) { logger.error("", e); } } /** * 查询(分页,高亮) */ @Test public void queryCase() { String queryStr = "title:this"; SolrQuery params = new SolrQuery(queryStr); params.set("start", 0); params.set("rows", 5); // 启用高亮组件, 设置高亮 params.setHighlight(true) .addHighlightField("title") .setHighlightSimplePre("<span class=\"red\">") .setHighlightSimplePost("</span>") .setHighlightSnippets(2) .setHighlightFragsize(1000) .setStart(0) .setRows(10) .set("hl.useFastVectorHighlighter", "true") .set("hl.fragsize", "200"); try { QueryResponse response = server.query(params); SolrDocumentList list = response.getResults(); logger.info("########### 总共 ： " + list.getNumFound() + "条记录"); for (SolrDocument doc : list) { logger.info("######### id : " + doc.get("id") + " title : " + doc.get("title")); } Map<String, Map<String, List<String>>> map = response.getHighlighting(); Iterator<String> iterator = map.keySet().iterator(); while (iterator.hasNext()) { String key = iterator.next(); Map<String, List<String>> values = map.get(key); logger.info("############################################################"); logger.info("############ id : " + key); for (Map.Entry<String, List<String>> entry : values.entrySet()) { String subKey = entry.getKey(); List<String> subValues = entry.getValue(); logger.info("############ subKey : " + subKey); for (String str : subValues) { logger.info("############ subValues : " + str); } } } } catch (SolrServerException e) { logger.error("", e); } }} |
POJO：
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package com.hcm.solr.entity;import java.io.Serializable;import org.apache.solr.client.solrj.beans.Field;public class Message implements Serializable { /** * */ private static final long serialVersionUID = 1L; private String id; private String title; private String[] content; public Message() { super(); } public Message(String id, String title, String[] content) { super(); this.id = id; this.title = title; this.content = content; } public String getId() { return id; } @Field("id") public void setId(String id) { this.id = id; } public String getTitle() { return title; } @Field("title") public void setTitle(String title) { this.title = title; } public String[] getContent() { return content; } @Field("content") public void setContent(String[] content) { this.content = content; }}
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