Solr的学习使用之（八）facet实战
以下为统计media的数量功能，通过solrj，采用了facet方法，类似于sql的分组group by查询；这边的代码只是获取总媒体数量，其实他还有其他功能，去循环solrList的话，可以获取各个媒体的数量public int getMediaCount(Keyword keyword) {
HttpSolrServer solrServer = SolrServer.getInstance().getServer();
SolrQuery sQuery = new SolrQuery();
int result = 0;
try {
String para = this.initKeywordQueryPara(keyword);//这边的值大概是酱紫的 "* AND publishTime:AND contentStr:\"关键字\"";
sQuery.setFacet(true);
sQuery.setFacetMinCount(1);
sQuery.addFacetField("channelName");
sQuery.setQuery(para);
QueryResponse response = solrServer.query(sQuery,SolrRequest.METHOD.POST);
List<Count> solrList = response.getFacetField("channelName").getValues();
result = solrList.size();
return result;
} catch (SolrServerException e) {
log.error("查询solr失败", e);
e.printStackTrace();
} finally{
solrServer.shutdown();
solrServer = null;
}
return result;
}
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