Solr之客户端SolrJ

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。
引入依赖包：

<dependency><groupId>org.apache.solr</groupId><artifactId>solr-solrj</artifactId><version>5.2.1</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.7</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId><version>1.7.7</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency>

一、普通方式
1.增加、删除索引

package cn.slimsmart.solr.demo.solrj;import java.util.ArrayList;import java.util.Collection;import java.util.List;import org.apache.solr.client.solrj.impl.HttpSolrClient;// 采用SolrInputDocument对象增加、删除索引public class Test {static String URL = "http://192.168.18.119:9080/solr/test";public static void main(String[] args) {addDocs();//delDocs();}public static void addDocs() {long start = System.currentTimeMillis();Collection<Student> docs = new ArrayList<Student>();for (int i = 1; i < 50; i++) {Student s = new Student();//各属性的名称在conf/schema.xml中存在s.setId("efgh00"+i);s.setName("li si" + i);s.setAge(3 * i);s.setDesc(i+"今天天气很好");docs.add(s);}try {HttpSolrClient client = new HttpSolrClient(URL);client.addBeans(docs);client.optimize();client.commit();client.close();} catch (Exception e) {System.out.println(e);}System.out.println("cost time:" + (System.currentTimeMillis() - start));}public static void delDocs() {long start = System.currentTimeMillis();try {HttpSolrClient client = new HttpSolrClient(URL);List<String> ids = new ArrayList<String>();for (int i = 1; i < 10; i++) {ids.add("efgh00" + i);}client.deleteById(ids);client.commit();client.close();} catch (Exception e) {System.out.println(e);}System.out.println("cost time:" + (System.currentTimeMillis() - start));}}

2.处理查询

package cn.slimsmart.solr.demo.solrj;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.HttpSolrClient;import org.apache.solr.client.solrj.impl.XMLResponseParser;import org.apache.solr.client.solrj.response.QueryResponse;import org.apache.solr.common.SolrDocument;//普通方式处理查询结果public class QueryDocsTest {static String URL = "http://192.168.18.119:9080/solr/test";public static void main(String[] args) throws SolrServerException, IOException {HttpSolrClient client = new HttpSolrClient(URL);client.setConnectionTimeout(5000); //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Parserclient.setParser(new XMLResponseParser());client.setSoTimeout(1000); // socket read timeoutclient.setDefaultMaxConnectionsPerHost(100);client.setMaxTotalConnections(100);client.setFollowRedirects(false); // defaults to false        // allowCompression defaults to false.        // Server side must support gzip or deflate for this to have any effect.client.setAllowCompression(true);//使用ModifiableSolrParams传递参数/*  ModifiableSolrParams params = new ModifiableSolrParams();      // http://192.168.18.119:9080/solr/test/select?q=context%3A%E4%BB%8A%E5%A4%A9&wt=json&indent=true      // 设置参数，实现上面URL中的参数配置      // 查询关键词      params.set("q", "context:今天");      // 返回信息      params.set("fl", "id,name,age,desc");      // 排序      params.set("sort", "id 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", 0);      params.set("rows", 5);      // 返回格式      params.set("wt", "javabin");      QueryResponse response = client.query(params);*/        //使用SolrQuery传递参数，SolrQuery的封装性更好client.setRequestWriter(new BinaryRequestWriter());        SolrQuery query = new SolrQuery();        query.setQuery("context:今天");        query.setFields("id","name","age","desc");        query.setSort("id", ORDER.asc);        query.setStart(0);        query.setRows(2);//      query.setRequestHandler("/select");        QueryResponse response = client.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("age: "+ doc.getFieldValue("age").toString());            System.out.println("desc: " + doc.getFieldValue("desc"));            iRow++;        }        client.close();}}

二、java对象方式
创建java对象

package cn.slimsmart.solr.demo.solrj;import org.apache.solr.client.solrj.beans.Field;public class Student {@Fieldprivate String id;@Fieldprivate String name;@Fieldprivate int age;@Fieldprivate String desc;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 int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getDesc() {return desc;}public void setDesc(String desc) {this.desc = desc;}}

1.增加、删除索引

package cn.slimsmart.solr.demo.solrj;import java.util.ArrayList;import java.util.Collection;import java.util.List;import org.apache.solr.client.solrj.impl.HttpSolrClient;import org.apache.solr.common.SolrInputDocument;// 采用POJOs增加、删除索引public class Test1 {static String URL = "http://192.168.18.119:9080/solr/test";public static void main(String[] args) {addDocs();delDocs();}public static void addDocs() {long start = System.currentTimeMillis();Collection<SolrInputDocument> docs = new ArrayList<SolrInputDocument>();for (int i = 1; i < 50; i++) {SolrInputDocument doc1 = new SolrInputDocument();//各属性的名称在conf/schema.xml中存在doc1.addField("id", "abcd00" + i, 1.0f);doc1.addField("name", "zhan shan" + i, 1.0f);doc1.addField("age", 2 * i);doc1.addField("desc", "Apache Devicemap is a data repository containing devices attributes " + i);docs.add(doc1);}try {HttpSolrClient client = new HttpSolrClient(URL);client.add(docs.iterator());client.commit();client.close();} catch (Exception e) {System.out.println(e);}System.out.println("cost time:" + (System.currentTimeMillis() - start));}public static void delDocs() {long start = System.currentTimeMillis();try {HttpSolrClient client = new HttpSolrClient(URL);List<String> ids = new ArrayList<String>();for (int i = 1; i < 10; i++) {ids.add("abcd00" + i);}client.deleteById(ids);client.commit();client.close();} catch (Exception e) {System.out.println(e);}System.out.println("cost time:" + (System.currentTimeMillis() - start));}}

2.处理查询

package cn.slimsmart.solr.demo.solrj;import java.io.IOException;import java.util.List;import org.apache.solr.client.solrj.SolrQuery;import org.apache.solr.client.solrj.SolrServerException;import org.apache.solr.client.solrj.beans.DocumentObjectBinder;import org.apache.solr.client.solrj.impl.HttpSolrClient;import org.apache.solr.client.solrj.impl.XMLResponseParser;import org.apache.solr.client.solrj.response.QueryResponse;import org.apache.solr.common.SolrDocument;import org.apache.solr.common.SolrDocumentList;//采用POJOs方式处理查询结果public class QueryDocsTest1 {static String URL = "http://192.168.18.119:9080/solr/test";public static void main(String[] args) throws SolrServerException, IOException {HttpSolrClient client = new HttpSolrClient(URL);client.setConnectionTimeout(5000); //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Parserclient.setParser(new XMLResponseParser());client.setSoTimeout(1000); // socket read timeoutclient.setDefaultMaxConnectionsPerHost(100);client.setMaxTotalConnections(100);client.setFollowRedirects(false); // defaults to false        // allowCompression defaults to false.        // Server side must support gzip or deflate for this to have any effect.client.setAllowCompression(true);SolrQuery query = new SolrQuery();        query.setQuery("context:今天");        query.setStart(0);        query.setRows(2);         QueryResponse response = client.query(query);        // 搜索得到的结果数        System.out.println("Find:" + response.getResults().getNumFound());        // 输出结果        int iRow = 1;                 SolrDocumentList list = response.getResults();        DocumentObjectBinder binder = new DocumentObjectBinder();        List<Student> beanList=binder.getBeans(Student.class, list);        for(Student s:beanList){            System.out.println(s.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++;        }        client.close();}}

另外，除了使用java客户端外，我们可以通过http请求管理索引，例如：

Solr 删除全部索引：http://localhost:8080/solr/update/?stream.body=<delete><query>*:*</query></delete>&stream.contentType=text/xml;charset=utf-8&commit=true
solr 删除指定ID的索引：http://localhost:8080/solr/update/?stream.body=<delete><id>1</id></delete>&stream.contentType=text/xml;charset=utf-8&commit=true

参考管理页面：http://192.168.18.119:9080/solr/admin.html#/test/documents

参考文章：

1.官方文档
2.Solr JAVA客户端SolrJ 4.9使用示例教程

3.Solr分页查询代码，包含查询，分页，高亮及获取高亮处摘要代码