SpringData ES好像没有提供类来获取ES返回的highlights。 Spring Data 可以返回对象列表,但 ES 返回的 Json 中的高亮部分位于一个单独的部分,“ElasticSearchTemplate”类不处理。
代码示例:-
QueryBuilder query = QueryBuilders.matchQuery("name","tom");
SearchQuery searchQuery =new NativeSearchQueryBuilder().withQuery(query).
with HighlightFields(new Field("name")).build();
List<ESDocument> publications = elasticsearchTemplate.queryForList
(searchQuery, ESDocument.class);
我可能是错的,但我想不出只使用 SpringDataES。有人可以发布我们如何使用 Spring Data ES 获得亮点的示例吗?
提前致谢!
最佳答案
从 spring data elasticsearch 的测试用例中,我找到了解决方案:
这很有用。
@Test
public void shouldReturnHighlightedFieldsForGivenQueryAndFields() {
//given
String documentId = randomNumeric(5);
String actualMessage = "some test message";
String highlightedMessage = "some <em>test</em> message";
SampleEntity sampleEntity = SampleEntity.builder().id(documentId)
.message(actualMessage)
.version(System.currentTimeMillis()).build();
IndexQuery indexQuery = getIndexQuery(sampleEntity);
elasticsearchTemplate.index(indexQuery);
elasticsearchTemplate.refresh(SampleEntity.class);
SearchQuery searchQuery = new NativeSearchQueryBuilder()
.withQuery(termQuery("message", "test"))
.withHighlightFields(new HighlightBuilder.Field("message"))
.build();
Page<SampleEntity> sampleEntities = elasticsearchTemplate.queryForPage(searchQuery, SampleEntity.class, new SearchResultMapper() {
@Override
public <T> Page<T> mapResults(SearchResponse response, Class<T> clazz, Pageable pageable) {
List<SampleEntity> chunk = new ArrayList<SampleEntity>();
for (SearchHit searchHit : response.getHits()) {
if (response.getHits().getHits().length <= 0) {
return null;
}
SampleEntity user = new SampleEntity();
user.setId(searchHit.getId());
user.setMessage((String) searchHit.getSource().get("message"));
user.setHighlightedMessage(searchHit.getHighlightFields().get("message").fragments()[0].toString());
chunk.add(user);
}
if (chunk.size() > 0) {
return new PageImpl<T>((List<T>) chunk);
}
return null;
}
});
assertThat(sampleEntities.getContent().get(0).getHighlightedMessage(), is(highlightedMessage));
}
关于elasticsearch - 如何使用 Spring data elasticsearch 提供高亮显示,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37049764/