golang使用mgo连接MongoDB

github:https://github.com/ZhangzheBJUT/blog/blob/master/mgo.md 现在MongoDB官方还没有推出关于官方支持的golang的driver,推荐使用的是mgo. mgo的详细文档说明：http://godoc.org/labix.org/v2/mgo 下面是我开发中自己写的一个用mgo连接MongoDB数据库的使

package main

import (

 "fmt"
 "labix.org/v2/mgo"
 "labix.org/v2/mgo/bson"
)

type Person struct {
 NAME string
 PHONE string
}
type Men struct {
 Persons []Person
}
const = (
 URL = "192.168.2.175:27017"
)
func main() {

 session, err := mgo.Dial(URL) //连接数据库
 if err != nil {
 panic(err)
 }
 defer session.Close()
 session.SetMode(mgo.Monotonic, true)

 db := session.DB("mydb") //数据库名称
 collection := db.C("person") //如果该集合已经存在的话，则直接返回


 //*****集合中元素数目********
 countNum, err := collection.Count()
 if err != nil {
 panic(err)
 }
 fmt.Println("Things objects count: ", countNum)

 //*******插入元素*******
 temp := &Person{
 PHONE: "18811577546",
 NAME: "zhangzheHero"
 }
 //一次可以插入多个对象 插入两个Person对象
 err = collection.Insert(&Person{"Ale", "+55 53 8116 9639"}, temp)
 if err != nil {
 panic(err)
 }

 //*****查询单条数据*******
 result := Person{}
 err = collection.Find(bson.M{"phone": "456"}).One(&result)
 fmt.Println("Phone:", result.NAME, result.PHONE)

 //*****查询多条数据*******
 var personAll Men //存放结果
 iter := collection.Find(nil).Iter()
 for iter.Next(&result) {
 fmt.Printf("Result: %v\n", result.NAME)
 personAll.Persons = append(personAll.Persons, result)
 }

 //*******更新数据**********
 err = collection.Update(bson.M{"name": "ccc"}, bson.M{"$set": bson.M{"name": "ddd"}})
 err = collection.Update(bson.M{"name": "ddd"}, bson.M{"$set": bson.M{"phone": "12345678"}})
 err = collection.Update(bson.M{"name": "aaa"}, bson.M{"phone": "1245", "name": "bbb"})

 //******删除数据************
 _, err = collection.RemoveAll(bson.M{"name": "Ale”})

}