利用SolrJ操作solr API
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使用SolrJ操作Solr会比利用httpClient来操作Solr要简单。SolrJ通过封装httpClient方法,来操作solr的API的。即SolrJ底层还是通过使用httpClient中的方法来完成Solr的操作
添加jar包:首先,你需要在你的web项目中添加SolrJ需要的jar包,这些jar包在你所下载的Solr包中都可以找到(我下载的是solr-4.10.0.zip),包括:
- apache-solr-solrj-4.10.0.jar : solr-4.10.0\dist文件夹下
- apache-solr-solrj-4.10.0.jar所依赖的其他jar包 : solr-4.10.0\dist\solrj-lib文件夹下
- solr-core-4.10.0.jar
- commons-logging-1.0.4.jar 日志相关jar
Junit测试:
- package com.april.lucene.solr;
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- import java.io.IOException;
- import java.net.MalformedURLException;
- 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.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.junit.After;
- import org.junit.Before;
- import org.junit.Test;
- import com.april.lucene.model.JavaBean;
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- public class ServerTest {
- private HttpSolrServer server = null;
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- private static final String URL = "http://localhost:8080/solr/april"; //april索引库URL
- @Before
- public void init() {
- server = new HttpSolrServer(URL);
- }
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- @Test
- public void addDoc() {
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- SolrInputDocument doc = new SolrInputDocument();
- doc.addField("id", 1);
- doc.addField("name", "Add Solr Index");
- doc.addField("manu", "Solr test file");
- try {
- UpdateResponse response = server.add(doc);
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- server.commit();
- System.out.println(response);
- System.out.println("query time:" + response.getQTime());
- System.out.println("Elapsed Time:" + response.getElapsedTime());
- System.out.println("status:" + response.getStatus());
- } catch (SolrServerException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
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- @Test
- public void addBean() throws IOException, SolrServerException {
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- JavaBean bean = new JavaBean();
- bean.setId("2");
- bean.setName("Add bean index");
- bean.setMenu("index bean menu");
- server.addBean(bean);
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- server.commit();
- }
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- @Test
- public void remove() throws SolrServerException, IOException {
- server.deleteById("1");
- server.commit();
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- server.commit(true, true);
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- server.deleteByQuery("id:4 id:6");
- server.commit(true, true);
- }
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- @Test
- public void search() throws SolrServerException {
- SolrQuery query = new SolrQuery();
- query.set("name", "Solr");
- query.setStart(0);
- query.setRows(10);
- query.setSort("name", ORDER.desc);
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- QueryResponse resp = server.query(query);
- SolrDocumentList sdl = resp.getResults();
- System.out.println("总数:"+sdl.getNumFound());
- for(SolrDocument sd:sdl) {
- System.out.println(sd.getFieldValue("id"));
- System.out.println(sd.getFieldValue("name"));
- System.out.println(sd.getFieldValue("manu"));
- }
- }
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- @Test
- public void search2() throws MalformedURLException, SolrServerException{
- SolrQuery query = new SolrQuery();
- query.set("name", "Solr");
- query.setStart(0).setRows(10).setSort("name", ORDER.desc);
- QueryResponse res = server.query(query);
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- List<JavaBean> list = res.getBeans(JavaBean.class);
- System.out.println("当前总数:"+list.size());
- for(JavaBean bean : list){
- System.out.println(bean.toString());
- }
- }
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- @Test
- public void test6() throws SolrServerException, MalformedURLException{
- SolrQuery query = new SolrQuery("*");
- query.setHighlight(true).setHighlightSimplePre("<span class='red'>").setHighlightSimplePost("</span>").setStart(0).setRows(10);
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- query.setParam("hl.fl", "name,menu");
- QueryResponse res = server.query(query);
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- SolrDocumentList sdl = res.getResults();
- for(SolrDocument sd : sdl){
- System.out.println(sd.get("id")+"#"+sd.get("quesRemark")+"#"+sd.get("createEmpName"));
- String id = (String) sd.get("id");
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- System.out.println(id+"#"+res.getHighlighting().get(id).get("quesRemark"));;
-
- }
- }
- /**
- * gc在大部分状况下会将没有任何指向的引用的内存释放掉,除非在特殊情况下,最好不要干涉gc!
- * runFinalization()方法在调用时它会尽量去调用这个对象的finalize方法!
- * 都是强制gc去回收内存,其它大部分相似
- */
- @After
- public void destory() {
- server = null;
- System.runFinalization();
- System.gc();
- }
- }
Solr 索引分片(Sharding Index)
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- public class ServerTest2 {
- private HttpSolrServer server = new HttpSolrServer(URL);
- private static final String URL = "http://localhost:8080/solr/core0";
- @Before
- public void init() {
- server = new HttpSolrServer(URL);
- }
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- @Test
- public void search3 () throws SolrServerException{
- String SHARDS_URL = "http://localhost:8080/solr/core0,http://localhost:8080/solr/core2";
- String queryValue = "((coreFlag:0 AND ..core1上的其他条件) OR (coreFlag:1 AND ..core2 上的条件)) AND 其他条件 ";
- SolrQuery query = new SolrQuery(queryValue);
- query.setStart(0).setRows(10).setSort("name", ORDER.desc);
- if(StringUtils.isNotBlank(SHARDS_URL)){
- query.set("shards",SHARDS_URL);
- }
- QueryResponse resp = server.query(query);
- SolrDocumentList sdList = resp.getResults();
- List<JavaBean> searchList = server.getBinder().getBeans(JavaBean.class,sdList);
- Long totalRecord = new Long(sdList.getNumFound());
- }
- }