https://plumephp.com/tags/responsecontroller/Recent content in ResponseController on PlumePHPHugozh-CNThu, 25 May 2023 10:31:00 +0800https://plumephp.com/go-http-response-controller-2023/Thu, 25 May 2023 10:31:00 +0800https://plumephp.com/go-http-response-controller-2023/<h2 id="有些响应不是一次写完的">有些响应不是一次写完的</h2> <p>大多数 HTTP handler 都是一次性返回 JSON：</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-go" data-lang="go"><span class="line"><span class="cl"><span class="nx">json</span><span class="p">.</span><span class="nf">NewEncoder</span><span class="p">(</span><span class="nx">w</span><span class="p">).</span><span class="nf">Encode</span><span class="p">(</span><span class="nx">response</span><span class="p">)</span><span class="w"> </span></span></span></code></pre></div><p>但有些场景需要更细的控制：服务端持续推送日志，下载大文件时分块写入，长任务边执行边返回进度，或者你希望主动 flush 已写内容。Go 的 <code>net/http</code> 里有 <code>ResponseController</code>，它把一些响应控制能力以更明确的方式暴露出来。</p>