Javascript Client

安装依赖

npm install @elastic/elasticsearch@6
npm install array.prototype.flatmap

连接

const { Client } = require('@elastic/elasticsearch')
const client = new Client({
  node: 'https://router.nasuyun.com:9200',
  auth: {
    username: '用户名称',
    password: '用户密码'
  }
})

写入索引

创建 bulk.js

bulk.js

'use strict'

require('array.prototype.flatmap').shim()
const { Client } = require('@elastic/elasticsearch')
const client = new Client({
  node: 'https://router.nasuyun.com:9200',
  auth: {
    username: '用户名称',
    password: '用户密码'
  }
})

 client.bulk({
      body: [
        { index:  { _index: 'test', _type: 'test', _id: 1 } },
        { title: 'foo' },
        { index:  { _index: 'test', _type: 'test', _id: 2 } },
        { title: 'bar' },
        { index:  { _index: 'test', _type: 'test', _id: 3 } },
        { title: 'zoo' },        
      ]
    }, function (err, resp) {
        if(resp.errors) {
           console.log(JSON.stringify(resp, null, '\t'));
        }
    });

执行 bulk.js

node bulk.js

查询索引

创建 search.js

search.js

'use strict'

require('array.prototype.flatmap').shim()
const { Client } = require('@elastic/elasticsearch')
const client = new Client({
  node: 'https://router.nasuyun.com:9200',
  auth: {
    username: '用户名称',
    password: '用户密码'
  }
})

// callback API
client.search({
  index: 'test',
  body: {
    query: {
      match_all: {}
    }
  }
}, (err, result) => {
  console.log(result.body.hits)  
  if (err) console.error(err)
})

执行及返回

node search.js

{
    "total": 3,
    "max_score": 1,
    "hits": [
        {
            "_index": "test",
            "_type": "test",
            "_id": "1",
            "_score": 1,
            "_source": {
                "title": "foo"
            }
        },
        {
            "_index": "test",
            "_type": "test",
            "_id": "2",
            "_score": 1,
            "_source": {
                "title": "bar"
            }
        },
        {
            "_index": "test",
            "_type": "test",
            "_id": "3",
            "_score": 1,
            "_source": {
                "title": "zoo"
            }
        }
    ]
}