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This article mainly introduces how to use golang in elasticsearch3. It is very detailed and has a certain reference value. Friends who are interested must finish it!

Package mainimport ("context", "fmt", "github.com/olivere/elastic", "reflect"time") var (esUrl = "http://s100:9200" ctx = context.Background ()) type User struct {Name string `json:" name "`Age int `json:" age "`} func main () {/ / linked server client Err: = elastic.NewClient (elastic.SetSniff (false), elastic.SetURL (esUrl), elastic.SetHealthcheckInterval (10*time.Second), elastic.SetMaxRetries (5),) if err! = nil {panic (err.Error ())} / / get basic information info, code Err: = client.Ping (esUrl) .Do (ctx) if err! = nil {panic (err.Error ())} fmt.Println ("> es-info > >", info.Version.Number, code) client.Delete () .Index ("user") / / whether index exists exists Err: = client.IndexExists ("user") .Do (ctx) if err! = nil {panic (err.Error ())} fmt.Println ("> index-exists > >", exists) / / create index if! exists {rst Err: = client.CreateIndex ("user") .Do (ctx) if err! = nil {panic (err.Error ())} fmt.Println ("> index-index > >", rst.Index)} / / batch add for I: = 1 I

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