Golang 新手，我知道接口有點像合約，保證某些東西會以某種方式運行，這很酷，如果我制作它的本地副本，我基本上可以重寫它的運行方式（根據我的理解，如有不對請指正）這是我到目前為止所擁有的package registerimport (    "log"    "net/http"    "github.com/yohcop/openid-go")var nonceStore = &openid.SimpleNonceStore{    Store: make(map[string][]*openid.Nonce)}var discoveryCache = &SimpleDiscoveryCache{}type DiscoveredInfo interface {    OpEndpoint() string    OPLocalID() string    ClaimedID() string}type SimpleDiscoveredInfo struct {    opEndpoint, opLocalID, claimedID string}type SimpleDiscoveryCache map[string]DiscoveredInfofunc (s *SimpleDiscoveryCache) Put(id string, info DiscoveredInfo) {    db := common.ConnectDB()    rows, err := db.Query("INSERT INTO discovery_cache SET id=?, opendpoint=?, oplocalid=?, claimedid=?",        id, info.OpEndpoint(), info.OPLocalID(), info.ClaimedID())    if err != nil {        panic("Error: " + err.Error())    }    log.Println(rows)}func (s *SimpleDiscoveryCache) Get(id string) DiscoveredInfo {    db := common.ConnectDB()    rows, err := db.Query("SELECT FROM discovery_cache WHERE id=?", id)    if err != nil {        panic("Error: " + err.Error())    }    log.Println(rows)    var opEndpoint, opLocalID, claimedID string    for rows.Next() {        err := rows.Scan(&opEndpoint, &opLocalID, &claimedID)        if err != nil {            panic("Help!")        }    }    return &SimpleDiscoveredInfo{        opEndpoint, opLocalID, claimedID,    }}func DiscoverHandler(w http.ResponseWriter, r *http.Request) {    url, err := openid.RedirectURL("http://steamcommunity.com/openid", "http://localhost:1337/login/return", "http://localhost")    if err != nil {        http.Error(w, "Failed to login", 500)    }    http.Redirect(w, r, url, 303)}基本上我正在嘗試制作自己的，DiscoveryCache以便它使用數據庫而不是內存進行存儲（按照位于此處的 Go-OpenID 包的指示：https : //github.com/yohcop/openid-go我試圖重新創建的部分位于：https : //github.com/yohcop/openid-go/blob/master/discovery_cache.go