英文:
MongoDB Connection Error in Go: Target Machine actively refusing connection. Code from Mongo website used
问题
我正在尝试使用MongoDB连接到Facebook API。
我收到了一个错误，错误信息如下："server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: connection() error occured during connection handshake: dial tcp [::1]:27017: connectex: No connection could be made because the target machine actively refused it. }, ] }"
为了解决这个错误，我尝试切换到服务器 "mongodb://localhost:27018" 和 "mongodb://localhost:27019"。
我也扫描了我的代码，但没有找到任何错误。我对编程还很陌生，所以非常感谢任何帮助、额外的建议或知识。
以下是代码：
package main
import (
"context"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"log"
)
// Client 是导出的Mongo数据库客户端
var Client *mongo.Client
// ConnectDatabase 用于连接MongoDB数据库
func ConnectDatabase() {
log.Println("Database connecting...")
// 设置客户端选项
clientOptions := options.Client().ApplyURI("mongodb://localhost:27017")
// 连接MongoDB
client, err := mongo.Connect(context.TODO(), clientOptions)
Client = client
if err != nil {
log.Fatal(err)
}
// 检查连接
err = Client.Ping(context.TODO(), nil)
if err != nil {
log.Fatal(err)
}
log.Println("Database Connected.")
}
英文:
I am working on connecting to the Facebook API using MongoDB.
I am receiving an error that states: "server selection error: server selection timeout, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown, Last error: connection() error occured during connection handshake: dial tcp [::1]:27017: connectex: No connection could be made because the target machine actively refused it. }, ] }"
In attempts to fix this error, I have tried switching to servers "mongodb://localhost:27018" and "mongodb://localhost:27019"
I have also scanned my code for errors but can't find anything. I am still very new to programming, so any help or additional advice/ knowledge is appreciated.
Code Below:
package main
import (
"context"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"log"
)
// Client is exported Mongo Database client
var Client *mongo.Client
// ConnectDatabase is used to connect the MongoDB database
func ConnectDatabase() {
log.Println("Database connecting...")
// Set client options
clientOptions := options.Client().ApplyURI("mongodb://localhost:27017")
// Connect to MongoDB
client,err := mongo.Connect(context.TODO(), clientOptions)
Client = client
if err != nil{
log.Fatal(err)
}
// Check the connection
err = Client.Ping(context.TODO(), nil)
if err != nil {
log.Fatal(err)
}
log.Println("Database Connected.")
}
答案1
得分: 0
找到了非常简单的答案。我没有下载MongoDB社区服务器并将其安装为服务！
安装后，我使用http://localhost:8000/运行了我的代码，立即就可以工作了。
链接在这里：https://www.mongodb.com/try/download/community
英文:
Found the incredibly simple answer. I hadn't downloaded the MongoDB community server and installed it as a service!
After installing I ran my code with http://localhost:8000/ and it worked immediately.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
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