nodejs中的ejs视图引擎不显示utf-8字符集

<meta charset="UTF-8">

app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));
app.use(express.static(path.join(__dirname, 'public')));
app.use(express.urlencoded({ extended: false }));
app.use(express.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use(cookieParser());
app.use(session({
    secret: 'your-secret-key',
    resave: false,
    saveUninitialized: true
}));
app.use(flash());

<% res.setHeader('Content-Type', 'text/html; charset=utf-8'); %>