拼写纠错不区分大小写

@@ -207,7 +207,8 @@ public class SuggestServiceImpl implements ISuggestService, ApplicationEventPubl
         try {
             SearchParam suggestSearchParam = new SearchParam();
             suggestSearchParam.setSize(0);
-            suggestSearchParam.setSuggestionBuilder(SuggestBuilders.termSuggestion("keyword_suggestion").text(keyword).field("keyword").size(1));
+            suggestSearchParam.setSuggestionBuilder(SuggestBuilders.termSuggestion("keyword_suggestion")
+                    .text(keyword.trim().toLowerCase()).field("keyword.keyword_lowercase").size(1));
             SearchResult searchResult = searchCommonService.doSearch(ISearchConstants.INDEX_NAME_SUGGEST, suggestSearchParam);
             return getCorrectKeywordFromResult(searchResult);
         } catch (Exception e) {
@@ -325,7 +326,8 @@ public class SuggestServiceImpl implements ISuggestService, ApplicationEventPubl
         searchParam.setFiter(boolFilter);
 
         // 2.4) 增加拼写纠错 为了增加缓存命中率 此次都增加拼写检查处理
-        searchParam.setSuggestionBuilder(SuggestBuilders.termSuggestion("keyword_suggestion").text(queryWord).field("keyword").size(1));
+        searchParam.setSuggestionBuilder(SuggestBuilders.termSuggestion("keyword_suggestion")
+                .text(queryWord.trim().toLowerCase()).field("keyword.keyword_lowercase").size(1));
 
         // 2.5) 按照得分、权重、数量的规则降序排序
         List<SortBuilder> sortBuilders = new ArrayList<>(3);