go使用mongo
文档链接:https://godoc.org/labix.org/v2/mgo
mongo包下载:go get github.com/go-mgo/mgo
import (
"fmt"
"gopkg.in/mgo.v2"
_ "gopkg.in/mgo.v2/bson"
"os"
)
var Session *mgo.Session
var Databases *mgo.Database
var MgoError error
const (
MONGO_HOST = ""
MONGO_PORT = ""
MONGO_DB = ""
MONGO_USER = ""
MONGO_PWD = ""
)
func init() {
// 创建链接
Session, MgoError = mgo.Dial(fmt.Sprintf("%s:%s", MONGO_HOST, MONGO_PORT))
if MgoError != nil {
fmt.Println("链接失败!")
os.Exit(1)
}
// 选择DB
Databases = Session.DB(MONGO_DB)
// 登陆
MgoError = Databases.Login(MONGO_USER, MONGO_PWD)
if MgoError != nil {
fmt.Println("登陆验证失败!")
os.Exit(1)
}
// defer Session.Close()
}
func Demos() {
// 选择一个要操作的Collection
c := Databases.C("demo")
// count
fmt.Println(c.Count())
// insert
c.Insert(map[string]string{"name": "马超"})
// update
c.Update(map[string]string{"name": "马超"}, map[string]string{"name": "黄忠"})
// remove
c.Remove(map[string]string{"name": "马超"})
// find - count
num, MgoError := c.Find(map[string]string{"name": "黄忠"}).Count()
if MgoError != nil {
fmt.Println(MgoError.Error())
} else {
fmt.Println(num)
}
// find - one
var one map[string]interface{}
MgoError = c.Find(map[string]string{"name": "黄忠"}).One(&one)
if MgoError != nil {
fmt.Println(MgoError.Error())
} else {
fmt.Println(one)
}
// find - all
var all []map[string]interface{}
MgoError = c.Find(map[string]string{"name": "黄忠"}).All(&all)
if MgoError != nil {
fmt.Println(MgoError.Error())
} else {
fmt.Println(all)
}
}
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