<span class="n"><a href="https://sinatrarb.com/intro.html">https://sinatrarb.com/intro.html</a><br />
get</span> <span class="s1">&#39;/posts&#39;</span> <span class="k">do</span><br />
&nbsp; <span class="c1"># matches &quot;GET /posts?title=foo&amp;author=bar&quot;</span><br />
&nbsp; <span class="n">title</span> <span class="o">=</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;title&#39;</span><span class="p">]</span><br />
&nbsp; <span class="n">author</span> <span class="o">=</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;author&#39;</span><span class="p">]</span><br />
&nbsp; <span class="c1"># uses title and author variables; query is optional to the /posts route</span><br />
<span class="k">end</span>

传递参数的时候，可以直接在URL后边加上?params=abc进行传递，后端可以不用特意定义，可以直接使用

例如，在接口进行判断子域名是否完全显示：/name/:name?subdomains=yes就完全显示，否则不显示

if params[&#39;subdomains&#39;] == &#39;yes&#39;<br />
&nbsp; result[&#39;subdomains&#39;] = result_domain[&#39;subdomains&#39;]<br />
end<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;