go language operation es

elastic client

We use a third-party library https://github.com/olivere/elastic to connect to ES and perform operations.

Pay attention to download the client of the same version as your ES. For example, the ES we use here is version 7.2.1, so the client we downloaded should also correspond to github.com/olivere/elastic/v7.
rely:

require (
    github.com/olivere/elastic/v7 v7.0.4
)

Simple example:

package main

import (
	"context"
	"fmt"

	"github.com/olivere/elastic/v7"
)

// Elasticsearch demo

type Person struct {
    
    
	Name    string `json:"name"`
	Age     int    `json:"age"`
	Married bool   `json:"married"`
}

func main() {
    
    
	client, err := elastic.NewClient(elastic.SetURL("http://192.168.1.7:9200"))
	if err != nil {
    
    
		// Handle error
		panic(err)
	}

	fmt.Println("connect to es success")
	p1 := Person{
    
    Name: "rion", Age: 22, Married: false}
	put1, err := client.Index().
		Index("user").
		BodyJson(p1).
		Do(context.Background())
	if err != nil {
    
    
		// Handle error
		panic(err)
	}
	fmt.Printf("Indexed user %s to index %s, type %s\n", put1.Id, put1.Index, put1.Type)
}