Solr JAVA客户端SolrJ 4.9使用示例教程

感谢有奉献精神的人

转自：http://www.tuicool.com/articles/uAzQnaz

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", "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

• 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

• 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

• 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());    }  }}