简介
SolrJ是操作Solr的JAVA客户端,它提供了增加、修改、删除、查询Solr索引的JAVA接口。SolrJ针对Solr提供了Rest 的HTTP接口进行了封装,SolrJ底层是通过使用httpClient中的方法来完成Solr的操作。
SolrJ/Solr 跨版本兼容性
SolrJ通常向后保持兼容性,可以使用新版本的SolrJ访问较旧的Solr,反之亦然。建议使用同Solr server同版本的SolrJ,
详见http://wiki.apache.org/solr/Solrj 中关于兼容性的描述。
示例代码
- 采用SolrInputDocument对象增加、删除索引
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import java.util.ArrayList; import java.util.Collection; import java.util.List; import org.apache.solr.client.solrj.impl.HttpSolrServer; import org.apache.solr.common.SolrInputDocument; public class AddDocsDemo { public static final String SOLR_URL = "http://172.168.63.233:8983/solr"; public static void main(String[] args) { //通过浏览器查看结果 //http://172.168.63.233:8983/solr/collection1/select?q=name%3A%E6%94%B9%E9%9D%A9&wt=json&indent=true //AddDocs(); delDocs(); } public static void AddDocs() { String[] words = { "中央全面深化改革领导小组", "第四次会议", "审议了国企薪酬制度改革", "考试招生制度改革", "传统媒体与新媒体融合等", "相关内容文件", "习近平强调要", "逐步规范国有企业收入分配秩序", "实现薪酬水平适当", "结构合理、管理规范、监督有效", "对不合理的偏高", "过高收入进行调整", "深化考试招生制度改革", "总的目标是形成分类考试", "综合评价", "多元录取的考试招生模式", "健全促进公平", "科学选才", "监督有力的体制机制", "着力打造一批形态多样", "手段先进", "具有竞争力的新型主流媒体", "建成几家拥有强大实力和传播力", "公信力", "影响力的新型媒体集团" }; long start = System.currentTimeMillis(); Collection<SolrInputDocument> docs = new ArrayList<SolrInputDocument>(); for (int i = 1; i < 300; i++) { SolrInputDocument doc1 = new SolrInputDocument(); doc1.addField("id", "id" + i, 1.0f); doc1.addField("name", words[i % 21], 1.0f); doc1.addField("price", 10 * i); docs.add(doc1); } try { HttpSolrServer server = new HttpSolrServer(SOLR_URL); // 可以通过三种方式增加docs,其中server.add(docs.iterator())效率最高 // 增加后通过执行commit函数commit (936ms) // server.add(docs); // server.commit(); // 增加doc后立即commit (946ms) // UpdateRequest req = new UpdateRequest(); // req.setAction(ACTION.COMMIT, false, false); // req.add(docs); // UpdateResponse rsp = req.process(server); // the most optimal way of updating all your docs // in one http request(432ms) server.add(docs.iterator()); } catch (Exception e) { System.out.println(e); } System.out.println("time elapsed(ms):" + (System.currentTimeMillis() - start)); } public static void delDocs() { long start = System.currentTimeMillis(); try { HttpSolrServer server = new HttpSolrServer(SOLR_URL); List<String> ids = new ArrayList<String>(); for (int i = 1; i < 300; i++) { ids.add("id" + i); } server.deleteById(ids); server.commit(); } catch (Exception e) { System.out.println(e); } System.out.println("time elapsed(ms):" + (System.currentTimeMillis() - start)); } }
- 采用POJOs增加、删除索引
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import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.List; import java.util.Random; import org.apache.solr.client.solrj.beans.DocumentObjectBinder; import org.apache.solr.client.solrj.impl.BinaryRequestWriter; import org.apache.solr.client.solrj.impl.HttpSolrServer; import org.apache.solr.common.SolrInputDocument; public class AddBeansDemo { public static final String SOLR_URL = "http://172.168.63.233:8983/solr"; public static void main(String[] args) { // 通过浏览器查看结果 // 要保证bean中各属性的名称在conf/schema.xml中存在,如果查询,要保存被索引 // http://172.168.63.233:8983/solr/collection1/select?q=description%3A%E6%94%B9%E9%9D%A9&wt=json&indent=true // delBeans(); AddBeans(); } public static Random rand = new Random(47); public static String[] authors = { "张三", "李四", "王五", "赵六", "张飞", "刘备", "关云长" }; public static String[] links = { "http://repository.sonatype.org/content/sites/forge-sites/m2e/", "http://news.ifeng.com/a/20140818/41626965_0.shtml", "http://news.ifeng.com/a/20140819/41631363_0.shtml?wratingModule_1_9_1", "http://news.ifeng.com/topic/19382/", "http://news.ifeng.com/topic/19644/" }; public static String genAuthors() { List<String> list = Arrays.asList(authors).subList(0, rand.nextInt(7)); String str = ""; for (String tmp : list) { str += " " + tmp; } return str; } public static List<String> genLinks() { return Arrays.asList(links).subList(0, rand.nextInt(5)); } public static void AddBeans() { String[] words = { "中央全面深化改革领导小组", "第四次会议", "审议了国企薪酬制度改革", "考试招生制度改革", "传统媒体与新媒体融合等", "相关内容文件", "习近平强调要", "逐步规范国有企业收入分配秩序", "实现薪酬水平适当", "结构合理、管理规范、监督有效", "对不合理的偏高", "过高收入进行调整", "深化考试招生制度改革", "总的目标是形成分类考试", "综合评价", "多元录取的考试招生模式", "健全促进公平", "科学选才", "监督有力的体制机制", "着力打造一批形态多样", "手段先进", "具有竞争力的新型主流媒体", "建成几家拥有强大实力和传播力", "公信力", "影响力的新型媒体集团" }; long start = System.currentTimeMillis(); Collection<NewsBean> docs = new ArrayList<NewsBean>(); // DocumentObjectBinder binder = new DocumentObjectBinder(); for (int i = 1; i < 300; i++) { NewsBean news = new NewsBean(); news.setId("id" + i); news.setName("news" + i); news.setAuthor(genAuthors()); news.setDescription(words[i % 21]); news.setRelatedLinks(genLinks()); // SolrInputDocument doc1 = binder.toSolrInputDocument(news); docs.add(news); } try { HttpSolrServer server = new HttpSolrServer(SOLR_URL); server.setRequestWriter(new BinaryRequestWriter()); // 可以通过二种方式增加docs,其中server.add(docs.iterator())效率最高 // 增加后通过执行commit函数commit (981ms) // server.addBeans(docs); // server.commit(); // the most optimal way of updating all your docs // in one http request(481ms) server.addBeans(docs.iterator()); server.optimize(); //time elasped 1176ms } catch (Exception e) { System.out.println(e); } System.out.println("time elapsed(ms):" + (System.currentTimeMillis() - start)); } public static void delBeans() { long start = System.currentTimeMillis(); try { HttpSolrServer server = new HttpSolrServer(SOLR_URL); List<String> ids = new ArrayList<String>(); for (int i = 1; i < 300; i++) { ids.add("id" + i); } server.deleteById(ids); server.commit(); } catch (Exception e) { System.out.println(e); } System.out.println("time elapsed(ms):" + (System.currentTimeMillis() - start)); } }
import java.util.List; import org.apache.solr.client.solrj.beans.Field; class NewsBean { @Field private String id; @Field private String name; @Field private String author; @Field private String description; @Field("links") private List<String> relatedLinks; public NewsBean(){ } public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAuthor() { return author; } public void setAuthor(String author) { this.author = author; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public List<String> getRelatedLinks() { return relatedLinks; } public void setRelatedLinks(List<String> relatedLinks) { this.relatedLinks = relatedLinks; } }
- 普通方式处理查询结果
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import java.io.IOException; import org.apache.solr.client.solrj.SolrQuery; import org.apache.solr.client.solrj.SolrQuery.ORDER; import org.apache.solr.client.solrj.SolrServerException; import org.apache.solr.client.solrj.impl.BinaryRequestWriter; import org.apache.solr.client.solrj.impl.HttpSolrServer; import org.apache.solr.client.solrj.impl.XMLResponseParser; import org.apache.solr.client.solrj.response.QueryResponse; import org.apache.solr.common.SolrDocument; public class QueryDocsDemo { // public static final String SOLR_URL = "http://192.168.230.128:8983/solr"; public static final String SOLR_URL = "http://172.168.63.233:8983/solr"; public static void main(String[] args) throws SolrServerException, IOException { HttpSolrServer server = new HttpSolrServer(SOLR_URL); server.setMaxRetries(1); server.setMaxRetries(1); // defaults to 0. > 1 not recommended. server.setConnectionTimeout(5000); // 5 seconds to establish TCP //正常情况下,以下参数无须设置 //使用老版本solrj操作新版本的solr时,因为两个版本的javabin incompatible,所以需要设置Parser server.setParser(new XMLResponseParser()); server.setSoTimeout(1000); // socket read timeout server.setDefaultMaxConnectionsPerHost(100); server.setMaxTotalConnections(100); server.setFollowRedirects(false); // defaults to false // allowCompression defaults to false. // Server side must support gzip or deflate for this to have any effect. server.setAllowCompression(true); //使用ModifiableSolrParams传递参数 // ModifiableSolrParams params = new ModifiableSolrParams(); // // 192.168.230.128:8983/solr/select?q=video&fl=id,name,price&sort=price asc&start=0&rows=2&wt=json // // 设置参数,实现上面URL中的参数配置 // // 查询关键词 // params.set("q", "video"); // // 返回信息 // params.set("fl", "id,name,price,score"); // // 排序 // params.set("sort", "price asc"); // // 分页,start=0就是从0开始,rows=5当前返回5条记录,第二页就是变化start这个值为5就可以了 // params.set("start", 2); // params.set("rows", 2); // // 返回格式 // params.set("wt", "javabin"); // QueryResponse response = server.query(params); //使用SolrQuery传递参数,SolrQuery的封装性更好 server.setRequestWriter(new BinaryRequestWriter()); SolrQuery query = new SolrQuery(); query.setQuery("video"); query.setFields("id","name","price","score"); query.setSort("price", ORDER.asc); query.setStart(0); query.setRows(2); // query.setRequestHandler("/select"); QueryResponse response = server.query( query ); // 搜索得到的结果数 System.out.println("Find:" + response.getResults().getNumFound()); // 输出结果 int iRow = 1; for (SolrDocument doc : response.getResults()) { System.out.println("----------" + iRow + "------------"); System.out.println("id: " + doc.getFieldValue("id").toString()); System.out.println("name: " + doc.getFieldValue("name").toString()); System.out.println("price: " + doc.getFieldValue("price").toString()); System.out.println("score: " + doc.getFieldValue("score")); iRow++; } } }
- 采用POJOs方式处理查询结果
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import java.io.IOException; import java.util.List; import org.apache.solr.client.solrj.SolrQuery; import org.apache.solr.client.solrj.SolrQuery.ORDER; import org.apache.solr.client.solrj.SolrServerException; import org.apache.solr.client.solrj.beans.DocumentObjectBinder; import org.apache.solr.client.solrj.impl.HttpSolrServer; import org.apache.solr.client.solrj.response.FacetField; import org.apache.solr.client.solrj.response.QueryResponse; import org.apache.solr.common.SolrDocument; import org.apache.solr.common.SolrDocumentList; public class QueryBeanDemo { public static final String SOLR_URL = "http://172.168.63.233:8983/solr"; public static void main(String[] args) throws SolrServerException, IOException { // http://172.168.63.233:8983/solr/collection1/select?q=description%3A%E6%80%BB%E7%9B%AE%E6%A0%87&facet=true&facet.field=author_s HttpSolrServer server = new HttpSolrServer(SOLR_URL); server.setMaxRetries(1); server.setMaxRetries(1); // defaults to 0. > 1 not recommended. server.setConnectionTimeout(5000); // 5 seconds to establish TCP // server.setRequestWriter(new BinaryRequestWriter()); SolrQuery query = new SolrQuery(); query.setQuery("description:改革"); query.setStart(0); query.setRows(2); query.setFacet(true); query.addFacetField("author_s"); QueryResponse response = server.query(query); // 搜索得到的结果数 System.out.println("Find:" + response.getResults().getNumFound()); // 输出结果 int iRow = 1; //response.getBeans存在BUG,将DocumentObjectBinder引用的Field应该为 org.apache.solr.client.solrj.beans.Field SolrDocumentList list = response.getResults(); DocumentObjectBinderL binder = new DocumentObjectBinderL(); List<NewsBean> beanList=binder.getBeans(NewsBean.class, list); for(NewsBean news:beanList){ System.out.println(news.getId()); } for (SolrDocument doc : response.getResults()) { System.out.println("----------" + iRow + "------------"); System.out.println("id: " + doc.getFieldValue("id").toString()); System.out.println("name: " + doc.getFieldValue("name").toString()); iRow++; } for (FacetField ff : response.getFacetFields()) { System.out.println(ff.getName() + "," + ff.getValueCount() + "," + ff.getValues()); } } }
参考
http://wiki.apache.org/solr/Solrj
时间: 2024-10-30 22:25:00