更改Elasticsearch返回的格式

Question

有没有办法可以指示ES以特定格式返回日期？ 我很想得到你在下面看到的结果：

{ items[
   { image: ‘url’, title: ‘hello there' },
   { image: ‘url’, title: ‘hello there' } 
  ] 
}

我正在进行ES查询，返回此信息：

{
  // snipp...
  "hits" : {
    "total" : 4,
    "max_score" : 0.124633156,
    "hits" : [ {
      "_index" : "harvester",
      "_type" : "entries",
      "_id" : "5555b05750c4c81f97e669b9",
      "_score" : 0.124633156,
      "_source":{
          "title": "hello there",
          "image": "http://example.com/img.png""}
    }, {
      "_index" : "harvester",
      "_type" : "mongodb",
      "_id" : "5555b05750c4c81f97e669b9",
      "_score" : 0.124633156,
      "_source": {
         "description": "long desc",
         "url":   "http://example.com""
      }
    }, {