1.     @Override
    2.     public String spellingCorrection(SpellingCorrectionRequest request) throws IOException {
    4.         // 1、构建  PhraseSuggestion 条件
    5.         PhraseSuggestionBuilder phraseSuggestionBuilder = new PhraseSuggestionBuilder(request.getFieldName());
    6.         phraseSuggestionBuilder.text(request.getText());
    7.         phraseSuggestionBuilder.size(1);
    9.         SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
    10.         searchSourceBuilder.sort(new ScoreSortBuilder().order(SortOrder.DESC));
    11.         searchSourceBuilder.suggest(new SuggestBuilder().addSuggestion(MY_SUGGEST, phraseSuggestionBuilder));
    13.         // 2、封装搜索请求
    14.         SearchRequest searchRequest = new SearchRequest();
    15.         searchRequest.indices(request.getIndexName());
    16.         searchRequest.source(searchSourceBuilder);
    18.         // 3、查询elasticsearch
    19.         SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
    21.         // 4、获取响应中纠错后的词
    22.         PhraseSuggestion phraseSuggestion = searchResponse.getSuggest().getSuggestion(MY_SUGGEST);
    23.         List<PhraseSuggestion.Entry.Option> options = phraseSuggestion.getEntries().get(0).getOptions();
    25.         return Optional.ofNullable(options).filter(e -> !e.isEmpty()).map(e -> e.get(0)).map(e -> e.getText().string()).orElse("");
    26.     }