Renderer

Transform

You can use a JSON adapter to custom the response, recommended to use Google's GSON

import com.google.gson.Gson;

server.get("/json", ctx -> {
    val customer = CustomObject.builder()
                               .email("abc@gmail.com")
                               .name("Tu Huynh").build();
    val gson = new Gson();
    return HttpResponse.of(customer)
                       .transform(gson::toJson);
    // You will get {"email": "abc@gmail.com", "name": "Tu Huynh"}
});

JSON/XML?

You can also use a XML transformer, to make your Jiny server speak XML or whatever format you want)

Global Transform

You can also set a global custom response, which will be applied for all handlers in the server

import com.google.gson.Gson;

val server = HttpServer.port(1234)
            .useTransformer(gson::toJson);

Template Engine

You can use a template engine as a custom render:

import com.github.jknack.handlebars.Handlebars;

public HttpResponse index(RequestContext ctx) throws IOException {
    val hb = new Handlebars();
    val template = hb.compileInline("<b>Hello {{this}}</b>");
    return HttpResponse.of(template.apply(ctx.getQuery().get("name")));
}