sql into (gob)file and (txt)file

package main

import (

    "database/sql"

    "encoding/gob"

    "encoding/json"

    "fmt"

    "log"

    "os"

    "time"

    _ "github.com/lib/pq"

)

type Pginfo struct {

    Uid        int

    Username  string

    Department string

    Created    string

}

var count int = 0

func main() {

    //open postgresSql

    newtime := time.Now()

    db, err := sql.Open("postgres", "user=postgres password=123456 dbname=stbcon sslmode=disable")

    if err != nil {

        log.Fatal(err)

    }

    defer db.Close() //open and close sql

    res, err := db.Query("select*from userinfo")

    if err != nil {

        log.Fatal(err)

    }

    defer res.Close()

    fp, err := os.OpenFile("F:/MyGo/src/dboutinfile/json.txt", os.O_CREATE, 0755) // open your file

    if err != nil {

        log.Fatal(err)

    }

    defer fp.Close()

    ffp, err := os.OpenFile("F:/MyGo/src/dboutinfile/json.gob", os.O_CREATE|os.O_APPEND|os.O_RDWR, 0644)

    if err != nil {

        log.Fatal(err)

    }

    defer ffp.Close()

    for res.Next() {

        var outinfomation Pginfo //get one infomation

        if err = res.Scan(&outinfomation.Uid, &outinfomation.Username, &outinfomation.Department, &outinfomation.Created); err != nil {

            log.Fatal(err)

        }

        jsoninfo := json.NewEncoder(fp)

        jsoninfo.Encode(&outinfomation) //struct transform json into filejson形式写入

        code := gob.NewEncoder(ffp)//GOB形式写入

        if err = code.Encode(outinfomation); err != nil {

            log.Fatal(err)

        }

        count++

        fmt.Println("stophere", count)

    }

    fmt.Println("the time use", time.Since(newtime).String())

}