go get gopkg.in/mgo.v2

go get github.com/go-mgo/mgo

// mongo_test project main.gopackage mainimport ( "fmt" "math/rand" "time" "gopkg.in/mgo.v2" "gopkg.in/mgo.v2/bson")type GameReport struct { // id   bson.ObjectId `bson:"_id"` Game_id  int64 Game_length int64 Game_map_id string}func err_handler(err error) { fmt.Printf("err_handler, error:%s/n", err.Error()) panic(err.Error())}func main() { dail_info := &mgo.DialInfo{  Addrs:  []string{"127.0.0.1"},  Direct: false,  Timeout: time.Second * 1,  Database: "game_report",  Source: "admin",  Username: "test1",  Password: "123456",  PoolLimit: 1024, } session, err := mgo.DialWithInfo(dail_info) if err != nil {  fmt.Printf("mgo dail error[%s]/n", err.Error())  err_handler(err) } defer session.Clone() // set mode session.SetMode(mgo.Monotonic, true) c := session.DB("game_report").C("game_detail_report") r := rand.New(rand.NewSource(time.Now().UnixNano())) report := GameReport{  // id:   bson.NewObjectId(),  Game_id:  100,  Game_length: r.Int63() % 3600,  Game_map_id: "hello", } err = c.Insert(report) if err != nil {  fmt.Printf("try insert record error[%s]/n", err.Error())  err_handler(err) } result := GameReport{} var to_find_game_id int64 = 100 err = c.Find(bson.M{"game_id": to_find_game_id}).One(&result) if err != nil {  fmt.Printf("try find record error[%s]/n", err.Error())  err_handler(err) } fmt.Printf("res, game_id[%d] length[%d] game_map_id[%s]/n",  to_find_game_id, result.Game_length, result.Game_map_id) // try find all report var results []GameReport err = c.Find(bson.M{}).All(&results) if err != nil {  fmt.Printf("try game all record of game_detail_report error[%s]/n",   err.Error())  err_handler(err) } result_count := len(results) fmt.Printf("result count: %d/n", result_count) for i, report := range results {  fmt.Printf("index: %d, report{ game_id: %d, game_length: %d, game_map_id: %s}/n",   i, report.Game_id, report.Game_length, report.Game_map_id) }}