ES权威指南[官方文档学习笔记]-31 Retrieving a document
2014-05-13 00:00
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es:http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/get-doc.html
下一篇:http://my.oschina.net/qiangzigege/blog/264285
内容:
下一篇:http://my.oschina.net/qiangzigege/blog/264285
内容:
为了检索文档,我们使用同样的_index,_type和_id. 动作换成GET. GET /website/blog/123?pretty 响应包含了熟悉的元数据,加上_source字段,source包含了原始的JSON对象。 { "_index" : "website", "_type" : "blog", "_id" : "123", "_version" : 1, "found" : true, "_source" : { "title": "My first blog entry", "text": "Just trying this out..." "date": "2014/01/01" } } 响应包含 {"found": true}. 意味着文档找到了,如果我们找不存在的文档,found就会为false. 另外,HTTP的响应码可能为404,而不是202,我们可以传入-i参数(curl). curl -i -XGET /website/blog/124?pretty HTTP/1.1 404 Not Found Content-Type: application/json; charset=UTF-8 Content-Length: 83 { "_index" : "website", "_type" : "blog", "_id" : "124", "found" : false } 检索一个文档的一部分 默认下,响应会返回整个文档,也许你只对title字段感兴趣,可以通过_source参数来过滤。 多个字段用逗号隔开。 GET /website/blog/123?_source=title,text 响应如下: { "_index" : "website", "_type" : "blog", "_id" : "123", "_version" : 1, "exists" : true, "_source" : { "title": "My first blog entry" , "text": "Just trying this out..." } } 或许你只想要source而不要meta数据。 GET /website/blog/123/_source 响应如下: { "title": "My first blog entry", "text": "Just trying this out...", "date": "2014/01/01" }
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