Provide a way to send a JSON object with `WebClient`

Description

WebClient client = WebClient.of();
// Send a serialized JSON object with "applicaiton/json"
HttpResponse response = client.postJson("/items", new MyItem()); 
HttpResponse response = client.putJson("/items", new MyItem());
HttpResponse response = client.patchJson("/items", new MyItem());

HttpResponse response = client.prepare()
                              .post("/items")
                              .contentJson(new MyItem())
                              .execute();

Contributor guide

Tech stack

java

Domain

api

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

half day

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

JavaArmeria WebClient basicsJSON serialization (e.g., Jackson)

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

60

Research direction

Examine the Armeria WebClient interface and its implementation to understand the current pattern for adding HTTP methods. Look for existing JSON serialization utilities in the codebase, such as Jackson integration. Review the issue comments for any suggested implementations or discussions. Propose adding methods consistent with the existing API style.