修改连接charset

conn.go

@@ -22,7 +22,7 @@ func Connect(DBHOST, DBUSER, DBPWD, DBNAME, DBPORT string, conns ...int) error {
 	if DBHOST != "" && DBUSER != "" && DBPWD != "" && DBPORT != "" { //&& DBNAME != ""
 
 		for i := 0; i < 10; i++ {
-			DB, dbConnErr = sql.Open("mysql", DBUSER+":"+DBPWD+"@tcp("+DBHOST+":"+DBPORT+")/"+DBNAME+"?charset=utf8")
+			DB, dbConnErr = sql.Open("mysql", DBUSER+":"+DBPWD+"@tcp("+DBHOST+":"+DBPORT+")/"+DBNAME+"?charset=utf8mb4")
 			if dbConnErr != nil {
 				log.Println("ERROR", "can not connect to Database, ", dbConnErr)
 				time.Sleep(time.Second * 5)