引言:

  solr搭建起后,就该应用到java后台开发里了,接下来就用springboot整合应用solr

一:引入jar包

  

<!--solr-->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-solr</artifactId>
<version>4.0.6.RELEASE</version>
</dependency> <!--操作solr的工具-->
<dependency>
<groupId>org.apache.solr</groupId>
<artifactId>solr-solrj</artifactId>
<version>8.0.0</version>
</dependency>

二:对application配置文件进行配置(mycore1是我创建的核心,具体名字改为你所创建的核心)

spring:
data:
solr:
host: http://127.0.0.1:8983/solr/mycore1

三:接下来就是代码操作了(详细解释看注解),这个只是我的服务层

@Service
public class SearchService { @Autowired
private SolrClient solrClient;
//search就是搜索的内容,currentpage是因为我做了分页,如果没做分页可忽略此参数
public PageResult searchNews(String search,int currentPage) throws IOException, SolrServerException {
// 创建solr查询对象
SolrQuery query = new SolrQuery();
if(null != search && !"".equals(search)){
// 设置查询关键词
query.setQuery(search);
// 设置默认查询域
query.set("df", "news_keywords");
}
// 高亮显示
query.setHighlight(true);
// 设置高亮显示字段
query.addHighlightField("newsTitle,newsAbstract");
query.setHighlightSimplePre("<span style='color:red'>");
query.setHighlightSimplePost("</span>");
// 设置排序规则
query.setSort("newsTime",SolrQuery.ORDER.desc);
// 设置返回格式
query.set("wt","json");
// 设置分页
query.set("start", (currentPage - 1) * 10);
query.set("rows", 10);
// 进行查询得到返回结果
QueryResponse queryResponse = solrClient.query(query);
// 取出高亮部分
Map<String, Map<String, List<String>>> highlighting = queryResponse.getHighlighting();
// 得到主体数据部分
SolrDocumentList results = queryResponse.getResults(); ArrayList<NewsWithBLOBs> newsList = new ArrayList<>();
// 对主体数据进行遍历,将数据依次保存到news对象中,然后将news对象加入list集合就是查询到的所有新闻
for (SolrDocument result : results){
NewsWithBLOBs news = new NewsWithBLOBs();
news.setNewsId(result.get("id").toString());
news.setNewsCover(result.get("newsCover").toString());
news.setNewsTime((Date) result.get("newsTime"));
news.setNewsBrowse((Integer) result.get("newsBrowse"));
news.setNewsSchoolid(result.get("newsSchoolid").toString());
news.setNewsCategoryid(result.get("newsCategoryid").toString());
news.setNewsAbstract(result.get("newsAbstract").toString());
news.setNewsContent(result.get("newsContent").toString());
// 设置高亮部分,下边是得到指定新闻id的高亮部分,并且将高亮部分设置进入对象中
Map<String, List<String>> map = highlighting.get(result.get("id"));
List<String> list = map.get("newsAbstract");
if(null != list && list.size() > 0){
String newsAbstract = list.get(0);
news.setNewsAbstract(newsAbstract);
}
List<String> list1 = map.get("newsTitle");
if(null != list1 && list1.size() > 0){
String newsTitle = list1.get(0);
news.setNewsTitle(newsTitle);
}
newsList.add(news);
} // 得到所获得的新闻条数
long numFound = results.getNumFound();
// 下边是我自己的分页封装,可忽略,上边的到的newslist就是获得的所有新闻
PageResult result = new PageResult();
result.setRecordCount(numFound);
System.out.println(numFound);
result.setTotalPages((int) (numFound%10 == 0 ? numFound/10 : numFound/10+1));
result.setList(newsList);
return result;
}
}

  

通过上边就能获取到指定的查询对象了,并且高亮显示也正常

04-13 19:19