go MongoDB

1. 安装

go get go.mongodb.org/mongo-driver/mongo 

package mongodbexampleimport ("context""fmt""ginapi/structs""time""go.mongodb.org/mongo-driver/bson""go.mongodb.org/mongo-driver/bson/primitive""go.mongodb.org/mongo-driver/mongo""go.mongodb.org/mongo-driver/mongo/options"
)var mongoClient *mongo.Clientvar testCollection *mongo.Collectionfunc InitMongo() {clientOptions := options.Client().ApplyURI("mongodb://ellis:ellischen@192.168.214.133:32000/")mongoClient, _ := mongo.Connect(context.TODO(), clientOptions)testCollection = mongoClient.Database("baz").Collection("qux")
}func InsertOneByStruct() {res, err := testCollection.InsertOne(context.Background(), &structs.MongoStruct{Id: primitive.NewObjectID(), UserName: "ellis", Email: "[e-mail]"})if err != nil {fmt.Printf("err: %v\n", err)}id := res.InsertedIDfmt.Printf("id: %v\n", id)
}func InsertManyByStructs() {values := []interface{}{structs.MongoStruct{Id: primitive.NewObjectID(), UserName: "1", Email: "1"}, structs.MongoStruct{Id: primitive.NewObjectID(), UserName: "2", Email: "2"}}imr, _ := testCollection.InsertMany(context.Background(), values)fmt.Printf("imr.InsertedIDs: %v\n", imr.InsertedIDs)
}func FindALL() {ctx, channel := context.WithTimeout(context.Background(), 30*time.Second)defer channel()// cur, _ := testCollection.Find(ctx, bson.M{"username": "1"})cur, _ := testCollection.Find(ctx, bson.D{{"username", "1"}})defer cur.Close(ctx)for cur.Next(ctx) {var value structs.MongoStructcur.Decode(&value)fmt.Printf("value: %v\n", value)}
}func UpdateMany() {ctx, channel := context.WithTimeout(context.Background(), 30*time.Second)defer channel()ur, err := testCollection.UpdateMany(ctx, bson.D{{"username", "vv"}}, bson.D{{"$set", bson.D{{"username", "ellis"}, {"email", "haha"}}}})if err != nil {fmt.Printf("err: %v\n", err)}fmt.Printf("ur.MatchedCount: %v\n", ur.MatchedCount)
}func DeleteOne() {ctx, channel := context.WithTimeout(context.Background(), 30*time.Second)defer channel()dr, err := testCollection.DeleteOne(ctx, bson.D{{"username", "1"}})if err != nil {fmt.Printf("err: %v\n", err)}fmt.Printf("dr.DeletedCount: %v\n", dr.DeletedCount)
}// func main() {
// 	InitMongo()
// 	// InsertOneByStruct()
// 	// InsertManyByStructs()
// 	// FindALL()
// 	// UpdateMany()
// 	DeleteOne()
// }

https://ocakhasan.github.io/golang-mongodb-query-examples/