golang學習之mgo操作mongodb

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mgo是mongodb的golang驅動，測試代碼：

// mgotest project main.gopackage mainimport (    "fmt"    "time"    "gopkg.in/mgo.v2"    "gopkg.in/mgo.v2/bson")type User struct {    Id        bson.ObjectId `bson:"_id"`    Username  string        `bson:"name"`    Pass      string        `bson:"pass"`    Regtime   int64         `bson:"regtime"`    Interests []string      `bson:"interests"`}const URL String = "127.0.0.1:27017"var c *mgo.Collectionvar session *mgo.Sessionfunc (user User) ToString() string {    return fmt.Sprintf("%#v", user)}func init() {    session, _ = mgo.Dial(URL)    //切換到資料庫    db := session.DB("blog")    //切換到collection    c = db.C("mgotest")}//新增資料func add() {    //    defer session.Close()    stu1 := new(User)    stu1.Id = bson.NewObjectId()    stu1.Username = "stu1_name"    stu1.Pass = "stu1_pass"    stu1.Regtime = time.Now().Unix()    stu1.Interests = []string{"象棋", "遊泳", "跑步"}    err := c.Insert(stu1)    if err == nil {        fmt.Println("插入成功")    } else {        fmt.Println(err.Error())        defer panic(err)    }}//查詢func find() {    //    defer session.Close()    var users []User    //    c.Find(nil).All(&users)    c.Find(bson.M{"name": "stu1_name"}).All(&users)    for _, value := range users {        fmt.Println(value.ToString())    }    //根據ObjectId進行查詢    idStr := "577fb2d1cde67307e819133d"    objectId := bson.ObjectIdHex(idStr)    user := new(User)    c.Find(bson.M{"_id": objectId}).One(user)    fmt.Println(user)}//根據id進行修改func update() {    interests := []string{"象棋", "遊泳", "跑步"}    err := c.Update(bson.M{"_id": bson.ObjectIdHex("577fb2d1cde67307e819133d")}, bson.M{"$set": bson.M{        "name":      "修改後的name",        "pass":      "修改後的pass",        "regtime":   time.Now().Unix(),        "interests": interests,    }})    if err != nil {        fmt.Println("修改失敗")    } else {        fmt.Println("修改成功")    }}//刪除func del() {    err := c.Remove(bson.M{"_id": bson.ObjectIdHex("577fb2d1cde67307e819133d")})    if err != nil {        fmt.Println("刪除失敗" + err.Error())    } else {        fmt.Println("刪除成功")    }}func main() {    add()    find()    update()    del()}

 

golang學習之mgo操作mongodb