如何使用Node.js客户端从Elasticsearch获取字段

Question

I am trying to get fields from localhost:9200/monIndex/monType/_mapping

I am using the Elasticsearch API:

client.indices.getMapping({
  index: 'monIndex',
  type:'monType',       
}).then(function (response) {           
  callback(response);                               
});

The response returned is the object containing the _mapping from ES, but I only need to retrieve fields.

I have a nested mapping.

Answer 1

Correct syntax is :

<host>:<port>/<index|indices>/_mapping/field/<field|fields>

For eg:

localhost:9200/monIndex/_mapping/field/monType

documentation : https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-get-field-mapping.html

Answer 2

You need to use indices.getFieldMapping instead of getMapping :

client.indices.getFieldMapping({
  index: 'monIndex',
  type:'monType',   
  fields: 'field1,field2,field3'    
}).then(function (response) {           
  callback(response);                               
});