go开发环境配置

export GOPATH=/home/go

export GOBIN=$GOPATH/bin

export PATH=$PATH:$GOBIN

go get -u github.com/nsf/gocode

sudo mv /home/tudou/.vim/autoload/gocomplete.vim /home/work/app/vim74/share/vim/vim74/autoload

sudo mv /home/tudou/.vim/ftplugin/go /home/work/app/vim74/share/vim/vim74/ftplugin

/home/work/app/vim74/share/vim/vim74/plugin

set enc=utf-8

set nobackup

set ignorecase

colo desert

"" 行号

set nu

"" 自动缩进

set autoindent

"" 设置软制表符宽度为4

set tabstop=4

set softtabstop=4

"" 设置缩进的空格书为4

set shiftwidth=4

set backspace=indent,eol,start

set completeopt=longest,menu

set rtp+=$GOROOT/misc/vim

filetype plugin indent on

syntax on

let g:SuperTabRetainCompletionType=2

let g:SuperTabDefaultCompletionType="<C-X><C-O>"

package main
  2 
  3 import (
  4     "fmt"
  5     "database/sql"
  6     _"github.com/go-sql-driver/mysql"
  7     "strconv"
  8     "math/rand"
  9     "time"
 10 )
 11 
 12 var(
 13     a = []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 14     defaultRand = rand.New(rand.NewSource(time.Now().UnixNano()))
 15     l=len(a)          
 16 )                     
 17                       
 18 func ranKey(count uint) string{
 19     var result []byte
 20     for i:=uint(0); i<count; i++{
 21         result = append(result,a[defaultRand.Intn(l)])
 22     }   
 23     result[defaultRand.Intn(5)+(int(count)/2)]=byte(95)
 24     return string(result)
 25 }
 26 
 27 func main(){
 28     fmt.Printf("hell world\n")
 29     db,err := sql.Open("mysql", "tudou_w:chuliang@tcp(127.0.0.1:3306)/xm_tudou?charset=utf8")
 30     if err != nil {
 31         panic(err.Error())
 32         fmt.Println(err.Error())
 33     }else{
 34         fmt.Println("db is open")
 35     }
 36     defer db.Close()
 37     
 38     rows,err := db.Query("select id,t_name from test_a")
 39     if err != nil {
 40         panic(err.Error())
 41         fmt.Println(err.Error())
 42     }else{
 43         fmt.Println("rows is open")
 44     }
 45     defer rows.Close()
 46     var id int
 47     var tname string
 48     for rows.Next(){
 49         rerr := rows.Scan(&id,&tname)
 50         if rerr == nil{
 51             fmt.Println("id:"+strconv.Itoa(id)+"    name:"+tname)
 52         }
 53     }
 54     db.Close()
 55     
 56     fmt.Println(ranKey(32))
 57 }

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