SolrJ 是 Solr 提供的 Java 客户端 API。通过 SolrJ 可以实现 Java 程序对 Solr 中数据的操作
大前提：添加 SolrJ 依赖。依赖版本和 Solr 版本严格对应
<dependencies>
<dependency>
<groupId>org.apache.solr</groupId>
<artifactId>solr-solrj</artifactId>
<version>8.2.0</version>
</dependency>
</dependencies>
1.新增/修改实现
String url = "http://192.168.32.133:8983/solr/testcore";
HttpSolrClient solrClient = new HttpSolrClient.Builder(url).build();
SolrInputDocument inputDocument = new SolrInputDocument();
inputDocument.addField("id","3");
inputDocument.addField("myfield","myfield3");
solrClient.add(inputDocument);
solrClient.commit();
2.删除实现
String url = "http://192.168.32.133:8983/solr/testcore";
HttpSolrClient solrClient = new HttpSolrClient.Builder(url).build();
solrClient.deleteById("3");
solrClient.commit();
3.查询实现
public void testQuery(){
try {
String url = "http://192.168.52.130:8983/solr/testcore";
HttpSolrClient solrClient = new HttpSolrClient.Builder(url).build();
//封装了所有查询条件
SolrQuery params = new SolrQuery();
params.setQuery("name:丰富的");
/排序
params.setSort("price", SolrQuery.ORDER.desc);
//分页
params.setStart(0);
params.setRows(1);
//高亮
params.setHighlight(true);
params.addHighlightField("name");
params.setHighlightSimplePre("<span>");
params.setHighlightSimplePost("</span>");
QueryResponse response = solrClient.query(params);
SolrDocumentList list = response.getResults();
System.out.println("总条数："+list.getNumFound());
//高亮数据
Map<String, Map<String, List<String>>> highlighting = response.getHighlighting();
for(SolrDocument doc :list){
System.out.println(doc.get("id"));
Map<String, List<String>> map = highlighting.get(doc.get("id"));
List<String> HLList = map.get("name");
if(HLList!=null&&HLList.size()>0){
//显示高亮数据
System.out.println(HLList.get(0));
}else{
System.out.println(doc.get("name"));
}
System.out.println(doc.get("price"));
System.out.println("===================");
}
solrClient.close();
} catch (SolrServerException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}