jodd-http/src/main/java/jodd/http/HttpRequest.java
public String queryString() {
		if (query == null) {
			return StringPool.EMPTY;
		}
		return HttpUtil.buildQuery(query, queryEncoding);
	}
public String queryString() {
		if (query == null) {
			return StringPool.EMPTY;
		}
		return HttpUtil.buildQuery(query, queryEncoding);
	}
Generates query string. All values are URL encoded.