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class="sidebar-heading"><span>ts-axios 取消功能实现</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>ts-axios 更多功能实现</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/blog/pages/5dce43eba796a2ab/" class="sidebar-link">withCredentials</a></li><li><a href="/blog/pages/390cb70e2b619449/" class="sidebar-link">XSRF 防御</a></li><li><a href="/blog/pages/1376fd897809036e/" class="sidebar-link">上传和下载的进度监控</a></li><li><a href="/blog/pages/89cd6496c23159ae/" class="sidebar-link">HTTP 授权</a></li><li><a href="/blog/pages/40b41ce8e8159567/" class="sidebar-link">自定义合法状态码</a></li><li><a href="/blog/pages/7753b8141663e54a/" class="sidebar-link">自定义参数序列化</a></li><li><a href="/blog/pages/0b9f2ee2b4dbb728/" aria-current="page" class="active sidebar-link">baseURL</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header level2"><a href="/blog/pages/0b9f2ee2b4dbb728/#需求分析" class="sidebar-link">需求分析</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/0b9f2ee2b4dbb728/#代码实现" class="sidebar-link">代码实现</a></li><li class="sidebar-sub-header level2"><a href="/blog/pages/0b9f2ee2b4dbb728/#demo-编写" class="sidebar-link">demo 编写</a></li></ul></li><li><a href="/blog/pages/c26b053540a7dafa/" class="sidebar-link">静态方法扩展</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 单元测试</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>ts-axios 部署与发布</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <div><main class="page"><div class="theme-vdoing-wrapper "><div class="articleInfo-wrap" data-v-06225672><div class="articleInfo" data-v-06225672><ul class="breadcrumbs" data-v-06225672><li data-v-06225672><a href="/blog/" title="首页" class="iconfont icon-home router-link-active" data-v-06225672></a></li> <li data-v-06225672><a href="/blog/note/typescript-axios/#《TypeScript 从零实现 axios》" data-v-06225672>《TypeScript 从零实现 axios》</a></li><li data-v-06225672><a href="/blog/note/typescript-axios/#ts-axios 更多功能实现" data-v-06225672>ts-axios 更多功能实现</a></li></ul> <div class="info" data-v-06225672><div title="作者" class="author iconfont icon-touxiang" data-v-06225672><a href="javascript:;" data-v-06225672>HuangYi</a></div> <div title="创建时间" class="date iconfont icon-riqi" data-v-06225672><a href="javascript:;" data-v-06225672>2020-01-05</a></div> <!----></div></div></div> <!----> <div class="content-wrapper"><div class="right-menu-wrapper"><div class="right-menu-margin"><div class="right-menu-title">目录</div> <div class="right-menu-content"></div></div></div> <h1><img src="data:image/png;base64,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">baseURL<!----></h1>  <div class="theme-vdoing-content content__default"><h1 id="baseurl"><a href="#baseurl" class="header-anchor">#</a> baseURL</h1> <h2 id="需求分析"><a href="#需求分析" class="header-anchor">#</a> 需求分析</h2> <p>有些时候，我们会请求某个域名下的多个接口，我们不希望每次发送请求都填写完整的 url，希望可以配置一个 <code>baseURL</code>，之后都可以传相对路径。如下：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">const</span> instance <span class="token operator">=</span> axios<span class="token punctuation">.</span><span class="token function">create</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  baseURL<span class="token operator">:</span> <span class="token string">'https://some-domain.com/api'</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>

instance<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">'/get'</span><span class="token punctuation">)</span>

instance<span class="token punctuation">.</span><span class="token function">post</span><span class="token punctuation">(</span><span class="token string">'/post'</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><p>我们一旦配置了 <code>baseURL</code>，之后请求传入的 <code>url</code> 都会和我们的 <code>baseURL</code> 拼接成完整的绝对地址，除非请求传入的 <code>url</code> 已经是绝对地址。</p> <h2 id="代码实现"><a href="#代码实现" class="header-anchor">#</a> 代码实现</h2> <p>首先修改一下类型定义。</p> <p><code>types/index.ts</code>：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">export</span> <span class="token keyword">interface</span> <span class="token class-name">AxiosRequestConfig</span> <span class="token punctuation">{</span>
  <span class="token comment">// ...</span>
  baseURL<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">string</span>
<span class="token punctuation">}</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><p>接下来实现 2 个辅助函数。</p> <p><code>helpers/url.ts</code>：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">export</span> <span class="token keyword">function</span> <span class="token function">isAbsoluteURL</span><span class="token punctuation">(</span>url<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">boolean</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> <span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">^([a-z][a-z\d\+\-\.]*:)?\/\/</span><span class="token regex-delimiter">/</span><span class="token regex-flags">i</span></span><span class="token punctuation">.</span><span class="token function">test</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span>
<span class="token punctuation">}</span>

<span class="token keyword">export</span> <span class="token keyword">function</span> <span class="token function">combineURL</span><span class="token punctuation">(</span>baseURL<span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">,</span> relativeURL<span class="token operator">?</span><span class="token operator">:</span> <span class="token builtin">string</span><span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">string</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> relativeURL <span class="token operator">?</span> baseURL<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">\/+$</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">'/'</span> <span class="token operator">+</span> relativeURL<span class="token punctuation">.</span><span class="token function">replace</span><span class="token punctuation">(</span><span class="token regex"><span class="token regex-delimiter">/</span><span class="token regex-source language-regex">^\/+</span><span class="token regex-delimiter">/</span></span><span class="token punctuation">,</span> <span class="token string">''</span><span class="token punctuation">)</span> <span class="token operator">:</span> baseURL
<span class="token punctuation">}</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><p>最后我们来调用这俩个辅助函数。</p> <p><code>core/dispatchRequest.ts</code>：</p> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">function</span> <span class="token function">transformURL</span><span class="token punctuation">(</span>config<span class="token operator">:</span> AxiosRequestConfig<span class="token punctuation">)</span><span class="token operator">:</span> <span class="token builtin">string</span> <span class="token punctuation">{</span>
  <span class="token keyword">let</span> <span class="token punctuation">{</span> url<span class="token punctuation">,</span> params<span class="token punctuation">,</span> paramsSerializer<span class="token punctuation">,</span> baseURL <span class="token punctuation">}</span> <span class="token operator">=</span> config
  <span class="token keyword">if</span> <span class="token punctuation">(</span>baseURL <span class="token operator">&amp;&amp;</span> <span class="token operator">!</span><span class="token function">isAbsoluteURL</span><span class="token punctuation">(</span>url<span class="token operator">!</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    url <span class="token operator">=</span> <span class="token function">combineURL</span><span class="token punctuation">(</span>baseURL<span class="token punctuation">,</span> url<span class="token punctuation">)</span>
  <span class="token punctuation">}</span>
  <span class="token keyword">return</span> <span class="token function">buildURL</span><span class="token punctuation">(</span>url<span class="token operator">!</span><span class="token punctuation">,</span> params<span class="token punctuation">,</span> paramsSerializer<span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><h2 id="demo-编写"><a href="#demo-编写" class="header-anchor">#</a> demo 编写</h2> <div class="language-typescript line-numbers-mode"><pre class="language-typescript"><code><span class="token keyword">const</span> instance <span class="token operator">=</span> axios<span class="token punctuation">.</span><span class="token function">create</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  baseURL<span class="token operator">:</span> <span class="token string">'https://img.mukewang.com/'</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>

instance<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">'5cc01a7b0001a33718720632.jpg'</span><span class="token punctuation">)</span>

instance<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">'https://img.mukewang.com/szimg/5becd5ad0001b89306000338-360-202.jpg'</span><span class="token punctuation">)</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br></div></div><p>这个 demo 非常简单，我们请求了慕课网的 2 张图片，注意当第二个请求 <code>url</code> 已经是绝对地址的时候，我们并不会再去拼接 <code>baseURL</code>。</p> <p>至此，<code>ts-axios</code> 就实现了 <code>baseURL</code> 的配置功能，接下来我们来实现 <code>ts-axios</code> 的静态方法扩展。</p></div></div>  <div class="page-edit"><div class="edit-link"><a href="https://github.com/heBody/blog/edit/master/docs/《TypeScript 从零实现 axios》/10.ts-axios 更多功能实现/07.baseURL.md" target="_blank" rel="noopener noreferrer">编辑</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="tags"><a href="/blog/tags/?tag=TypeScript" title="标签">#TypeScript</a></div> <div class="last-updated"><span class="prefix">上次更新:</span> <span class="time">2022/12/14, 19:36:42</span></div></div> <div class="page-nav-wapper"><div class="page-nav-centre-wrap"><a href="/blog/pages/7753b8141663e54a/" class="page-nav-centre page-nav-centre-prev"><div class="tooltip">自定义参数序列化</div></a> <a href="/blog/pages/c26b053540a7dafa/" class="page-nav-centre page-nav-centre-next"><div class="tooltip">静态方法扩展</div></a></div> <div class="page-nav"><p class="inner"><span class="prev">
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