Spring Data 弹性搜索 @Query @Highlight

Question

我无法使用此查询代码获得突出显示的字段，对此有任何想法，我正在使用 SDE4.0.0.RC2，我想用@Query：

@Query("{\n" +
           "  \"multi_match\": {\n" +
           "    \"query\": \"?0\",\n" +
           "    \"fields\": [\n" +
           "      \"code^2\",\n" +
           "      \"name\"\n" +
           "    ],\n" +
           "    \"analyzer\": \"standard\"\n" +
           "  }\n" +
           "}")
   @Highlight(
           fields = @HighlightField(
                   name = "['code','name']"),
           parameters = @HighlightParameters(
                   preTags = "<strong>",
                   postTags = "</strong>",
                   fragmentSize = 500,
                   numberOfFragments = 3
           )
   )
   List<CodeNames> findAllByCodeAndNameOrderByName(String code, Pageable pageable);

Answer 1

您需要在单独的注释参数中指定每个突出显示字段：

   @Query("{\n" +
            "  \"multi_match\": {\n" +
            "    \"query\": \"?0\",\n" +
            "    \"fields\": [\n" +
            "      \"code^2\",\n" +
            "      \"name\"\n" +
            "    ],\n" +
            "    \"analyzer\": \"standard\"\n" +
            "  }\n" +
            "}")
    @Highlight(
        fields = {
            @HighlightField(name = "code"),
            @HighlightField(name = "name")
        },
        parameters = @HighlightParameters(
            preTags = "<strong>",
            postTags = "</strong>",
            fragmentSize = 500,
            numberOfFragments = 3
        )
    )
    List<CodeNames> findAllByCodeAndNameOrderByName(String code, Pageable pageable);

编辑：

除此之外，您还必须更改方法的返回类型：

List<SearchHit<CodeNames>> findAllByCodeAndNameOrderByName(String code, Pageable pageable);

或

SearchHits<CodeNames> findAllByCodeAndNameOrderByName(String code, Pageable pageable);

要能够从返回的SearchHit 中读取突出显示值，请参阅https://docs.spring.io/spring-data/elasticsearch/docs/4.0.0.RC2/reference/html/#elasticsearch.operations.searchresulttypes