Golang manipulating MongoDB

This is a creation in Article, where the information may have evolved or changed. Required Package engine

Import(

  "FMT"

  "Sync"

  "Engine/mgo"

  "Engine/mgo/bson"

)

var(

 Session*MgO. Session

 db      *MgO. Database

 C       *MgO. Collection

 mux     sync. Mutex

)

Funcinit (){

 mux. Lock()

  defermux. Unlock()

  if Session! =Nil {

  return

    }

  //Newsession

 session,err: =MgO. Dial("192.168.0.229:27017")

 checkerr("Dialfail",err)

 session. SetMode(MgO. Monotonic,true)

  //newdb

  if db! =Nil {

  return

    }

 db=session. DB("Test")

  //newcollection

  if c! =Nil {

  return

    }

 c=db. C("person")

}

Funccheckerr (datastring,err  Error ){

      if    err  !=  Span style= "COLOR: #c0c0c0" >  nil    Span style= "COLOR: #000000" >{ 

 fmt. Println(data+":" +  err. Error())

    }

}

Typeperson struct{ 

 Name  string

 Emailstring

}

FuncNew ()*person{

  return&person{

 Name:  "Zhangbaolang",

 Email:"zhagnbaoliang.vip@gmail.com",

    }

}

FuncMain (){

  //Insert

 Err: =c. Insert(New())

 checkerr("Insertfail",err)

  //Find

 m: =bson. M{"name":"Zhangbaolang"}

 Query: =c. Find(m)

  // One

  Person: = person {}

 err=query. One(&person)

  //fmt. Println (person. Name)

 checkerr("Queryfail",err)

 fmt. Println(person. Email)

  if Session! =Nil {

 session. Close()

    }

}