Cargo.toml
[dependencies] axum-template="0.14.0" handlebars="4.3.6"
テンプレートファイルの用意
template/index.hbs
<body class="container">
	<h1 class="display-6 my-2">{{title}}</h1>
	<p class="my-2">{{ message }}</p>
</body>
main.rs
async fn handle_index() -> axum::response::Html<String> {
	let mut params = std::collections::HashMap::new();
	params.insert("title", "Index page");
	params.insert("message", "This is sample page message!");
	let mut handlebars = handlebars::Handlebars::new();
	handlebars
		.register_template_string("hello", include_str!("template/index.hbs"));
	let template = handlebars.render("hello", ¶ms).unwrap();
	axum::response::Html(template)
}