在Golang中正确使用Mongo

go get gopkg.in/mgo.v2

import (
    "gopkg.in/mgo.v2"
    "gopkg.in/mgo.v2/bson"
)

session, err := mgo.Dial("mongodb://localhost:27017")
if err != nil {
    panic(err)
}
defer session.Close()

db := session.DB("mydb")
collection := db.C("mycollection")

type Person struct {
    Name  string
    Email string
}

person := Person{
    Name:  "John Doe",
    Email: "johndoe@example.com",
}

err = collection.Insert(person)
if err != nil {
    panic(err)
}

var result Person
err = collection.Find(bson.M{"name": "John Doe"}).One(&result)
if err != nil {
    panic(err)
}

fmt.Println(result)

err = collection.Update(bson.M{"name": "John Doe"}, bson.M{"$set": bson.M{"email": "newemail@example.com"}})
if err != nil {
    panic(err)
}

err = collection.Remove(bson.M{"name": "John Doe"})
if err != nil {
    panic(err)
}