elasticsearch - 如何使用Java API创建和检索具有复杂类型的Elasticsearch字段？

Question

我有以下内容:

final duration = (jsonBuilder()
        .startObject()
        .field('start', new DateTime(testResult.startTime, dateTimeZone))
        .field('end', new DateTime(testResult.endTime, dateTimeZone))
        .endObject())

client.prepareIndex('builds', 'test')
        .setSource(jsonBuilder()
                .startObject()
                .field("duration", duration)
                .endObject())

SearchResponse searchResponse = client.prepareSearch('builds')
        .setQuery(boolQuery()
                .must(termQuery('_type', 'test')))
        .execute()
        .actionGet()

final source = searchResponse.hits.hits[0].source as Map<String, Object>

如何从此处检索 duration.start和 duration.end的值？

Answer 1

尝试1 ..!

    SearchHit[] searchHits = searchResponse.getHits().getHits();
    Map<String, Object> s=searchHits[0].sourceAsMap();
    Map<String, Date> duration=(Map<String, Date>) s.get("duration");
    Date start=duration.get("start");
    Date end=duration.get("end");

尝试2 ..!

    SearchHit[] searchHits = searchResponse.getHits().getHits();
    StringBuilder builder = new StringBuilder();
    int length = searchHits.length;
    builder.append("[");
    for (int i = 0; i < length; i++) {
        if (i == length - 1) {
            builder.append(searchHits[i].getSourceAsString());
        } else {
            builder.append(searchHits[i].getSourceAsString());
            builder.append(",");
        }
    }
    builder.append("]");
         String result= builder.toString();

它会返回一个字符串，并且它的有效JSON数组使用JSON解析器并像常规JSON进程那样获取值。