Go语言代码着色测试

package models

import ( 
  "github.com/robfig/revel" 
  "labix.org/v2/mgo" 
)

const ( 
  DbName                         = "myapp" 
  UserCollection                 = "user" 
)

type Dal struct { 
  session *mgo.Session 
}

func NewDal() (*Dal, error) { 
  revel.Config.SetSection("db") 
  ip, found := revel.Config.String("ip") 
  if !found { 
    revel.ERROR.Fatal("Cannot load database ip from app.conf") 
  }

  session, err := mgo.Dial(ip) 
  if err != nil { 
    return nil, err 
  }

  return &Dal{session}, nil 
}

func (d *Dal) Close() { 
  d.session.Close() 
}