Solr JAVA客户端SolrJ 4.9使用示例教程

浏览数：93 / 时间：2015年06月08日

摘要 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 POJOs 客户端

目录[-]

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

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", "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

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", "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

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());
        }
    }
}