[Go] golang http下返回json数据

type JsonResult  struct{
    Code int `json:"code"`
    Msg  string `json:"msg"`
}

//验证接口
func check(w http.ResponseWriter, r *http.Request) {
    email := r.PostFormValue("email")
    server := r.PostFormValue("server")
    password := r.PostFormValue("password")
    msg, _ := json.Marshal(tools.JsonResult{Code: 400, Msg: "验证失败"})

    w.Header().Set("content-type","text/json")
    if email != "" && server != "" && password != "" {
        res := tools.CheckEmailPassword(server, email, password)
        if res {
            msg, _ = json.Marshal(tools.JsonResult{Code: 200, Msg: "验证成功"})
            w.Write(msg)
        } else {
            w.WriteHeader(400)
            w.Write(msg)
        }
    } else {
        w.WriteHeader(400)
        w.Write(msg)
    }
}