使用Go语言实现微信公众平台

这个不是全部的代码哦，只是一个演示可以验证跟接受post传过来的消息并且能返回消息，中间的回复逻辑就待需要各位同志们自己写了哈

/*
 语言实现公众平台
 */
package main
import (
 "crypto/sha1"
 "encoding/xml"
 "fmt"
 "io"
 "io/ioutil"
 "log"
 "net/http"
 "sort"
 "strings"
 "time"
)
type request struct {
 tousername   string
 fromusername string
 createtime   time.duration
 msgtype      string
 content      string
 msgid        int
}
type response struct {
 tousername   string `xml:"xml>tousername"`
 fromusername string `xml:"xml>fromusername"`
 createtime   string `xml:"xml>createtime"`
 msgtype      string `xml:"xml>msgtype"`
 content      string `xml:"xml>content"`
 msgid        int    `xml:"xml>msgid"`
}
func str2sha1(data string) string {
 t := sha1.new()
 io.writestring(t, data)
 return fmt.sprintf("%x", t.sum(nil))
}
func action(w http.responsewriter, r *http.request) {
 postedmsg, err := ioutil.readall(r.body)
 if err != nil {
  log.fatal(err)
 }
 r.body.close()
 v := request{}
 xml.unmarshal(postedmsg, &v)
 if v.msgtype == "text" {
  v := request{v.tousername, v.fromusername, v.createtime, v.msgtype, v.content, v.msgid}
  output, err := xml.marshalindent(v, " ", " ")
  if err != nil {
   fmt.printf("error:%v\n", err)
  }
  fmt.fprintf(w, string(output))
 } else if v.msgtype == "event" {
  content := `"欢迎关注
        我的微信"`
  v := request{v.tousername, v.fromusername, v.createtime, v.msgtype, content, v.msgid}
  output, err := xml.marshalindent(v, " ", " ")
  if err != nil {
   fmt.printf("error:%v\n", err)
  }
  fmt.fprintf(w, string(output))
 }
}
func checksignature(w http.responsewriter, r *http.request) {
 r.parseform()
 var token string = "你的token"
 var signature string = strings.join(r.form["signature"], "")
 var timestamp string = strings.join(r.form["timestamp"], "")
 var nonce string = strings.join(r.form["nonce"], "")
 var echostr string = strings.join(r.form["echostr"], "")
 tmps := []string{token, timestamp, nonce}
 sort.strings(tmps)
 tmpstr := tmps[0] + tmps[1] + tmps[2]
 tmp := str2sha1(tmpstr)
 if tmp == signature {
  fmt.fprintf(w, echostr)
 }
}
func main() {
 http.handlefunc("/check", checksignature)
 http.handlefunc("/", action)
 http.listenandserve(":8080", nil)
}