我正試圖將數據寫入數據庫。 但我有錯誤「的恐慌:運行時錯誤:無效的內存地址或零指針引用」 在這個函數中,我等待數據從客戶機將數據發送到數據庫時出錯
func handlePacket(conn net.Conn) {
rw := bufio.NewReadWriter(bufio.NewReader(conn), bufio.NewWriter(conn))
defer conn.Close()
packet := model.RegistrationMessage{}
client := JsonDecoderMessage(rw).Decode(&packet)
if client != nil {
puts("Error from Decode.Please NO :(")
}
if packet.MessageType == model.AUTH_MESSAGE {
puts("Auth")
} else if packet.MessageType == model.REGS_MESSAGE {
puts("Regs")
Registration(packet.Login, packet.Password)
puts("good")
}
}
在這裏,我建立一個數據庫和我聯繫嘗試在DB
var db *sql.DB
func InitDataBase() {
psqlInfo := fmt.Sprintf("host=%s port=%d user=%s "+
"password=%s dbname=%s sslmode=disable",
host, port, user, password, dbname)
db, err := sql.Open("postgres", psqlInfo)
if err != nil {
panic(err)
}
defer db.Close()
err = db.Ping()
if err != nil {
panic(err)
}
fmt.Println("Successfully connected!")
}
func Registration(email, password string) {
sqlStatement := `INSERT INTO account0(email,password)
VALUES ($1, $2) RETURNING id`
id := 0
err := db.QueryRow(sqlStatement, email, password).Scan(&id)
if err != nil {
panic(err)
}
}
將推遲db.Close()放入您的主函數中。 –