mongodb atlas cluster golang insert struct slice 接口上下文取消,当前拓扑
mongodb atlas cluster golang insert struct slice interface context canceled, current topology
当我将一组文档插入 MongoDB Atlas 集合时,我收到以下错误消息:
2021/12/23 09:37:03 服务器选择错误:上下文已取消,当前拓扑:{ 类型:ReplicaSetNoPrimary,服务器:[{ 地址:cluster-attitude-shard-00-00 .o7pjk.mongodb.net:27017,类型:未知},{地址:cluster-attitude-shard-00-01。o7pjk.mongodb.net:27017,类型:未知},{地址:cluster-attitude-shard-00 -02.o7pjk.mongodb.net:27017, 类型: 未知 }, ] }
我使用下一个代码:
interfaz_slice := ToInterfaceSlice(students)
_, err := coleccion.InsertMany(ctx, interfaz_slice)
函数“ToInterfaceSlice”接收结构切片和return接口切片
我不明白我哪里弄错了
提前致谢
问题的新部分:
文件片段“main.go”:
func main() {
var students []data.TypeStudent
absPath, _ := filepath.Abs("data/students.csv")
students = data.LeerFichero(absPath)
data.ConectaBD()
data.InsertaColleccionEstudiantes(students)
}
文件片段“students.go”:
type TypeStudent struct {
FirstName string `bson:"first_name" json:"first_name"`
LastName string `bson:"last_name" json:"last_name"`
Class string `bson:"class" json:"class"`
}
func ToInterfaceSlice(lista []TypeStudent) []interface{} {
iface := make([]interface{}, len(lista))
for i := range lista {
iface[i] = lista[i]
}
return iface
}
文件片段“basedatos.go”:
func ConectaBD() {
cliente_local, err := mongo.NewClient(options.Client().ApplyURI(cadena_conexion))
if err != nil {
log.Fatal(err)
}
ctx, cancelar = context.WithTimeout(context.Background(), 10*time.Second)
err = cliente_local.Connect(ctx)
if err != nil {
log.Fatal(err)
}
defer cancelar()
mongo_cliente = cliente_local.Database("attitude")
log.Println("[+]Connected to MongoDB Atlas")
}
func InsertaColleccionEstudiantes(students []TypeStudent) {
coleccion = mongo_cliente.Collection("students")
interfaz_slice := ToInterfaceSlice(students)
log.Println("[+]A slice of interfaces are inserted directly into MONGODB")
_, err := coleccion.InsertMany(ctx, interfaz_slice)
if err != nil {
log.Fatal(err)
}
}
信息不充分。检查 IP
是否在白名单中。还要指定您正在使用的上下文。你可以试试 context.TODO()
.
我试过了,效果很好。
确保您的连接成功。同时使用 defer
.
关闭连接
这是您可以尝试使用的示例代码:
client, err := mongo.Connect(context.TODO(), options.Client().ApplyURI(uri))
if err != nil {
panic(err)
}
defer func() {
if err = client.Disconnect(context.TODO()); err != nil {
panic(err)
}
}()
// begin insertMany
coll := client.Database("insertDB").Collection("haikus")
docs := []interface{}{
bson.D{{"title", "Record of a Shriveled Datum"}, {"text", "No bytes, no problem. Just insert a document, in MongoDB"}},
bson.D{{"title", "Showcasing a Blossoming Binary"}, {"text", "Binary data, safely stored with GridFS. Bucket the data"}},
}
result, err := coll.InsertMany(context.TODO(), docs)
if err != nil {
panic(err)
}
为了更好地理解,请参阅此 link:https://raw.githubusercontent.com/mongodb/docs-golang/master/source/includes/usage-examples/code-snippets/insertMany.go
当我将一组文档插入 MongoDB Atlas 集合时,我收到以下错误消息:
2021/12/23 09:37:03 服务器选择错误:上下文已取消,当前拓扑:{ 类型:ReplicaSetNoPrimary,服务器:[{ 地址:cluster-attitude-shard-00-00 .o7pjk.mongodb.net:27017,类型:未知},{地址:cluster-attitude-shard-00-01。o7pjk.mongodb.net:27017,类型:未知},{地址:cluster-attitude-shard-00 -02.o7pjk.mongodb.net:27017, 类型: 未知 }, ] }
我使用下一个代码:
interfaz_slice := ToInterfaceSlice(students)
_, err := coleccion.InsertMany(ctx, interfaz_slice)
函数“ToInterfaceSlice”接收结构切片和return接口切片
我不明白我哪里弄错了
提前致谢
问题的新部分:
文件片段“main.go”:
func main() {
var students []data.TypeStudent
absPath, _ := filepath.Abs("data/students.csv")
students = data.LeerFichero(absPath)
data.ConectaBD()
data.InsertaColleccionEstudiantes(students)
}
文件片段“students.go”:
type TypeStudent struct {
FirstName string `bson:"first_name" json:"first_name"`
LastName string `bson:"last_name" json:"last_name"`
Class string `bson:"class" json:"class"`
}
func ToInterfaceSlice(lista []TypeStudent) []interface{} {
iface := make([]interface{}, len(lista))
for i := range lista {
iface[i] = lista[i]
}
return iface
}
文件片段“basedatos.go”:
func ConectaBD() {
cliente_local, err := mongo.NewClient(options.Client().ApplyURI(cadena_conexion))
if err != nil {
log.Fatal(err)
}
ctx, cancelar = context.WithTimeout(context.Background(), 10*time.Second)
err = cliente_local.Connect(ctx)
if err != nil {
log.Fatal(err)
}
defer cancelar()
mongo_cliente = cliente_local.Database("attitude")
log.Println("[+]Connected to MongoDB Atlas")
}
func InsertaColleccionEstudiantes(students []TypeStudent) {
coleccion = mongo_cliente.Collection("students")
interfaz_slice := ToInterfaceSlice(students)
log.Println("[+]A slice of interfaces are inserted directly into MONGODB")
_, err := coleccion.InsertMany(ctx, interfaz_slice)
if err != nil {
log.Fatal(err)
}
}
信息不充分。检查 IP
是否在白名单中。还要指定您正在使用的上下文。你可以试试 context.TODO()
.
我试过了,效果很好。
确保您的连接成功。同时使用 defer
.
这是您可以尝试使用的示例代码:
client, err := mongo.Connect(context.TODO(), options.Client().ApplyURI(uri))
if err != nil {
panic(err)
}
defer func() {
if err = client.Disconnect(context.TODO()); err != nil {
panic(err)
}
}()
// begin insertMany
coll := client.Database("insertDB").Collection("haikus")
docs := []interface{}{
bson.D{{"title", "Record of a Shriveled Datum"}, {"text", "No bytes, no problem. Just insert a document, in MongoDB"}},
bson.D{{"title", "Showcasing a Blossoming Binary"}, {"text", "Binary data, safely stored with GridFS. Bucket the data"}},
}
result, err := coll.InsertMany(context.TODO(), docs)
if err != nil {
panic(err)
}
为了更好地理解,请参阅此 link:https://raw.githubusercontent.com/mongodb/docs-golang/master/source/includes/usage-examples/code-snippets/insertMany.go