spring data solr 搜索关键字高亮显示
public Map<String, Object> highSearch(Map searchMap) {
Map map = new HashMap<>();
SimpleHighlightQuery query = new SimpleHighlightQuery();
HighlightOptions highlightOptions = new HighlightOptions().addField("item_title");//设置高亮域
highlightOptions.setSimplePrefix("<em style='color:red'>"); //设置高亮前缀
highlightOptions.setSimplePostfix("</em>"); //设置高亮后缀
query.setHighlightOptions(highlightOptions); //设置高亮显示
//1.按照关键字查询
Criteria criteria = new Criteria("item_keywords").is(searchMap.get("keywords"));
query.addCriteria(criteria);
//2.按分类筛选
if(!"".equals(searchMap.get("category"))){
Criteria filterCriteria = new Criteria("item_category").is(searchMap.get("category"));
FilterQuery filterQuery = new SimpleFilterQuery(filterCriteria);
query.addFilterQuery(filterQuery);
}
//3.按品牌筛选
if(!"".equals(searchMap.get("brand"))){
Criteria filterCriteria = new Criteria("item_brand").is(searchMap.get("brand"));
FilterQuery filterQuery = new SimpleFilterQuery(filterCriteria);
query.addFilterQuery(filterQuery);
}
//4.按规格筛选
if (searchMap.get("spec") != null){
Map<String,String> specMap = (Map<String, String>) searchMap.get("spec");
for (String key : specMap.keySet()) {
Criteria filtercriteria = new Criteria("item_spec_" + key).is(specMap.get(key));
FilterQuery filterQuery = new SimpleFilterQuery(filtercriteria);
query.addFilterQuery(filterQuery);
}
}
//设置查询条件
Integer pageNo = (Integer) searchMap.get("pageNo"); //获取页数
Integer pageSize = (Integer) searchMap.get("pageSize"); //获取每页记录数
query.setOffset((pageNo-1) * pageSize); //设置开始查找的索引
query.setRows(pageSize); //设置每页记录数
//用于存储修改高亮显示后的记录
List<Item> list = new ArrayList<>();
HighlightPage<Item> page = solrTemplate.queryForHighlightPage(query, Item.class);
for (HighlightEntry<Item> highlightEntry : page.getHighlighted()) {
Item item = highlightEntry.getEntity();
List<HighlightEntry.Highlight> highlights = highlightEntry.getHighlights();
if(highlights != null && highlights.size() > 0){
//获取高亮的标题集合
List<String> titles = highlights.get(0).getSnipplets();
if(titles !=null && titles.size() > 0){
//获取高亮的标题
item.setTitle(titles.get(0));
}
}
list.add(item);
}
map.put("rows", list );
map.put("total", page.getTotalElements());
map.put("totalPages", page.getTotalPages());
return map;
}