发布:2024/1/27 17:51:00作者:管理员 来源:本站 浏览次数:757
solr 安装配置完成后,如何在java代码中应用起来呢。
首先我们先创建一个类 solrUtils.java
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// _ooOoo_
// o8888888o
// 88" . "88
// (| -_- |)
// O\ = /O
// ____/`---'\____
// . ' \\| |// `.
// / \\||| : |||// \
// / _||||| -:- |||||- \
// | | \\\ - /// | |
// | \_| ''\---/'' | |
// \ .-\__ `-` ___/-. /
// ___`. .' /--.--\ `. . __
// ."" '< `.___\_<|>_/___.' >'"".
// | | : `- \`.;`\ _ /`;.`/ - ` : | |
// \ \ `-. \_ __\ /__ _/ .-` / /
// ======`-.____`-.___\_____/___.-`____.-'======
// `=---='
//
// .............................................
// 佛祖保佑 永无BUG
// 佛曰:
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import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.apache.solr.client.solrj.SolrClient;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrClient;
import org.apache.solr.client.solrj.response.UpdateResponse;
import org.apache.solr.common.SolrInputDocument;
import com.jfinal.kit.PropKit;
import com.sunjs.kit.ToolsUtils;
import com.sunjs.model.TBlogArticle;
public class SolrUtils {
protected static final Logger LOG = Logger.getLogger(SolrUtils. class );
private final static String BASE_URL = "http://localhost:8983/solr/sunjs" ;
/**
* 创建SolrServer对象
*
* 该对象有两个可以使用,都是线程安全的 1、CommonsHttpSolrServer:启动web服务器使用的,通过http请求的 2、
* EmbeddedSolrServer:内嵌式的,导入solr的jar包就可以使用了 3、solr
* 4.0之后好像添加了不少东西,其中CommonsHttpSolrServer这个类改名为HttpSolrClient
*
* @return
*/
public static SolrClient createSolrServer() {
return new HttpSolrClient.Builder(BASE_URL).build();
}
public static Integer addDucument(TBlogArticle article) {
if (article== null ){
return 30850 ;
}
Collection<SolrInputDocument> docs = new ArrayList<SolrInputDocument>();
SolrInputDocument doc = new SolrInputDocument();
doc.addField( "id" , article.getLong( "id" ));
doc.addField( "category_id" , article.getLong( "category_id" ));
doc.addField( "uuid" , article.getStr( "uuid" ));
doc.addField( "visit_num" , article.getInt( "visit_num" ));
doc.addField( "pic_url" , article.getStr( "pic_url" ));
doc.addField( "author" , article.getStr( "author" ));
doc.addField( "tags" , article.getStr( "tags" ));
doc.addField( "tags_name" , article.getStr( "tags_name" ));
doc.addField( "title" , article.getStr( "title" ));
doc.addField( "digest" , article.getStr( "digest" ));
doc.addField( "add_time" , article.getDate( "add_time" ));
docs.add(doc);
SolrClient solrClient = createSolrServer();
try {
solrClient.add(docs);
UpdateResponse rspcommit = solrClient.commit();
return rspcommit.getStatus()== 0 ? 30800 : 30850 ;
} catch (Exception e) {
e.printStackTrace();
LOG.info(ToolsUtils.print( "solr" , "索引失败" , article.getStr( "title" ), e.getMessage()));
} finally {
try {
LOG.info(ToolsUtils.print( "solr" , "索引成功" , article.getStr( "title" )));
solrClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return 30850 ;
}
public static Integer deleteById(Object id) {
if (id!= null && StringUtils.isEmpty(id+ "" )){
return 30892 ;
}
SolrClient solrClient = createSolrServer();
try {
if (id.equals( "*" )){
//删除所有
// Preparing the Solr document
solrClient.deleteByQuery( "*" );
UpdateResponse rspcommit = solrClient.commit();
return rspcommit.getStatus()== 0 ? 30891 : 30892 ;
} else {
solrClient.deleteById(id+ "" );
UpdateResponse rspcommit = solrClient.commit();
return rspcommit.getStatus()== 0 ? 30891 : 30892 ;
}
} catch (SolrServerException | IOException e) {
e.printStackTrace();
LOG.info(ToolsUtils.print( "solr" , "删除索引失败" , "ID:" +id, e.getMessage()));
} finally {
try {
LOG.info(ToolsUtils.print( "solr" , "删除索引成功" , "ID:" +id));
solrClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return 30892 ;
}
}
public static Page<TBlogArticle> queryFromSolr(Integer pageNumber, Integer pageSize, String reqparam) {
Page<TBlogArticle> page = new Page<TBlogArticle>();
if (StringUtils.isEmpty(reqparam)){
reqparam= "*" ;
}
SolrQuery query = new SolrQuery();
query.setHighlight( true );
query.addHighlightField( "digest" );
query.addHighlightField( "title" );
query.setHighlightSimplePre( "<font color=\"red\">" );
query.setHighlightSimplePost( "</font>" );
// query.setHighlightSnippets(1);
// query.setHighlightFragsize(2);
query.setStart((pageNumber- 1 )*pageSize);
query.setRows(pageSize);
query.set( "q" , "title:" +reqparam+ " OR " + "digest:" +reqparam);
List<TBlogArticle> articles = new ArrayList<TBlogArticle>();
SolrClient solrClient = createSolrServer();
try {
QueryResponse response = solrClient.query(query);
SolrDocumentList docList = response.getResults();
Map<String, Map<String, List<String>>> highlightMap = response.getHighlighting();
Iterator<SolrDocument> it = docList.iterator();
while (it.hasNext()) {
SolrDocument doc = it.next();
Long id = Long.valueOf(doc.getFieldValue( "id" ).toString());
Long category_id = Long.valueOf(doc.getFieldValue( "category_id" )== null ? "0" :doc.getFieldValue( "category_id" ).toString());
Integer visit_num = Integer.valueOf(doc.getFieldValue( "visit_num" )== null ? "0" :doc.getFieldValue( "visit_num" ).toString());
String uuid = doc.getFieldValue( "uuid" )== null ? null :doc.getFieldValue( "uuid" ).toString();
String pic_url = doc.getFieldValue( "pic_url" )== null ? null :doc.getFieldValue( "pic_url" ).toString();
String author = doc.getFieldValue( "author" )== null ? null :doc.getFieldValue( "author" ).toString();
String tags = doc.getFieldValue( "tags" )== null ? null :doc.getFieldValue( "tags" ).toString();
String tags_name = doc.getFieldValue( "tags_name" )== null ? null :doc.getFieldValue( "tags_name" ).toString();
String title = doc.getFieldValue( "title" )== null ? null :doc.getFieldValue( "title" ).toString();
String digest = doc.getFieldValue( "digest" )== null ? null :doc.getFieldValue( "digest" ).toString();
Date add_time = (Date)doc.getFieldValue( "add_time" );
TBlogArticle article = new TBlogArticle();
article.set( "id" , id);
article.set( "category_id" , category_id);
article.set( "uuid" , uuid);
article.set( "visit_num" , visit_num);
article.set( "pic_url" , pic_url);
article.set( "author" , author);
article.set( "tags" , tags);
article.put( "tags_name" , tags_name);
article.set( "title" , title);
article.set( "digest" , digest);
article.put( "title_html" , title);
article.put( "digest_html" , digest);
article.set( "add_time" , add_time);
List<String> titleList=highlightMap.get(id+ "" ).get( "title" );
List<String> digestList=highlightMap.get(id+ "" ).get( "digest" );
//获取并设置高亮的字段title
if (titleList!= null && titleList.size()> 0 ){
article.put( "title_html" , titleList.get( 0 ));
}
//获取并设置高亮的字段content
if (digestList!= null && digestList.size()> 0 ){
article.put( "digest_html" , digestList.get( 0 ));
}
articles.add(article);
}
Integer totalRow = Integer.valueOf(docList.getNumFound()+ "" );
Integer totalPage = ( int ) (totalRow % pageSize == 0 ? totalRow / pageSize : Math.ceil(( double )totalRow / ( double )pageSize)) ;
page = new Page<TBlogArticle>(articles, pageNumber, pageSize, totalPage, totalRow);
} catch (SolrServerException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
solrClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return page;
}
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上边可能有部分类报异常,不过都无关紧要,主要代码都在。
如果查询出来的字段:doc.getFieldValue 是一个数组,也就是多列。那么只需要在配置文件中操作一下即可:
进入 /Users/sun/Documents/solr-6.5.1/server/solr/my_core/conf 这个目录下,打开managed-schema
找到是数组的列,比如是add_time:
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< field name = "add_time" type = "tdates" multiValued = "false" />
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增加 multiValued="false" 即可!
如何想要删除全部索引
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SolrUtils.deleteById( "*" );
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删除执行id 为 1 的索引
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SolrUtils.deleteById( 1 );
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