Armeria HTTP Client - how to add query string parameters - armeria

Question

I searched for a bit but couldn't find an "Armeria API" to do this elegantly. I'm familiar with Netty so for the time being I'm using QueryStringEncoder. Is there a better way to do this ? Here I have a dynamic Map of params and I need to build the HTTP client programmatically. The Armeria WebClient and RequestHeaders builders provide ways to add headers and path, but not query string parameters.
HttpMethod httpMethod = HttpMethod.valueOf('GET');
String url = 'http://example.com'
String path = '/foo';
if (params != null) {
QueryStringEncoder qse = new QueryStringEncoder(url + path);
params.forEach((k, v) -> {
if (v != null) {
v.forEach(s -> qse.addParam(k, s));
}
});
try {
URI uri = qse.toUri();
path = path + "?" + uri.getRawQuery();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
WebClient webClient = WebClient.builder(url).decorator(new HttpClientLogger()).build();
RequestHeadersBuilder rhb = RequestHeaders.builder(httpMethod, path);

Answer 1

Armeria has QueryParams for building or parsing a query string:
// You don't really need a Map to build a QueryParams.
// See QueryParams.of() or QueryParamsBuilder.add() for more information.
Map<String, String> paramMap = ...;
QueryParams params =
QueryParams.builder()
.add(paramMap)
.build();
WebClient client =
WebClient.builder("http://example.com")
.decorator(...)
.build();
AggregatedHttpResponse res =
client.get("/foo?" + params.toQueryString()).aggregate().join()
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