Translated cookbook-using-axios-to-consume-apis.md

src/v2/cookbook/using-axios-to-consume-apis.md

@@ -1,16 +1,16 @@
 ---
-title: Using Axios to Consume APIs
+title: 使用 Axios 访问 API
 type: cookbook
 order: 9
 ---
 
-## Simple Example
+## 简单的示例
 
-There are many times when building application for the web that you may want to consume and display data from an API. There are several ways to do so, but a very popular approach is to use [axios](https://github.com/axios/axios), a promise-based HTTP client.
+你可能在构建应用程序的时候有很多次需要访问一个 API 并展示其数据。我们有很多种方法做这件事，而使用基于 promise 的 HTTP 客户端 [axios](https://github.com/axios/axios) 则是众多方法中比较流行的一个。
 
-In this exercise, we'll use the [CoinDesk API](https://www.coindesk.com/api/) to walk through displaying Bitcoin prices, updated every minute. First, we'd install axios with either npm/yarn or through a CDN link.
+在本次实践中，我们会使用 [CoinDesk API](https://www.coindesk.com/api/) 来完成展示比特币价格且每分钟更新的工作。熟悉，我们要通过 npm/yarn 或一个 CDN 链接安装 axios。
 
-There are a number of ways we can request information from the API, but it's nice to first find out what the shape of the data looks like, in order to know what to display. In order to do so, we'll make a call to the API endpoint and output it so we can see it. We can see in the CoinDesk API documentation, that this call will be made to `https://api.coindesk.com/v1/bpi/currentprice.json`. So first, we'll create a data property that will eventually house our information, and we'll retrieve the data and assign it using the `mounted` lifecycle hook:
+我们有很多种方式可以从 API 请求信息，但是我们最好首先确认这些数据的样子，以便进一步确定如何展示它。为了做到这一点，我们会调用一次这个 API 病输出结果，以便我们能够看清楚它。我们查阅了 CoinDesk 的 API 文档，发现其请求是发送到 `https://api.coindesk.com/v1/bpi/currentprice.json` 的。所以，我们首先创建一个 data 里的属性以最终放置我们的信息，然后我们将会在 `mounted` 生命周期钩子中获取数据并赋值过去：
 
 ```js
 new Vue({
@@ -34,18 +34,18 @@ new Vue({
 </div>
 ```
 
-And what we get is this:
+我们得到的东西是这样的：
 
 <p data-height="350" data-theme-id="32763" data-slug-hash="80043dfdb7b90f138f5585ade1a5286f" data-default-tab="result" data-user="Vue" data-embed-version="2" data-pen-title="First Step Axios and Vue" class="codepen">See the Pen <a href="https://codepen.io/team/Vue/pen/80043dfdb7b90f138f5585ade1a5286f/">First Step Axios and Vue</a> by Vue (<a href="https://codepen.io/Vue">@Vue</a>) on <a href="https://codepen.io">CodePen</a>.</p>
 <script async src="https://static.codepen.io/assets/embed/ei.js"></script>
 
-Excellent! We've got some data. But it looks pretty messy right now so let's display it properly and add some error handling in case things aren't working as expected or it takes longer than we thought to get the information.
+很好！我们已经得到了一些数据。但是它看起来还比较乱，所以我们会更好的展示它并添加一些错误处理，以应对事情未如我们所愿或请求超时的情形。
 
-## Real-World Example: Working with the Data
+## 真实示例：和数据协同工作
 
-### Displaying Data from an API
+### 从一个 API 展示数据
 
-It's pretty typical that the information we'll need is within the response, and we'll have to traverse what we've just stored to access it properly. In our case, we can see that the price information we need lives in `response.data.bpi`. If we use this instead, our output is as follows:
+从请求的响应中获取信息是一件再正常不过的事情，同时我们也需要准确的访问到它然后把它保存好。在这个例子中，我们可以看到我们需要的价格信息在 `response.data.bpi` 中。如果我们换用这个，则输出是下面这样的：
 
 ```js
 axios
@@ -56,7 +56,7 @@ axios
 <p data-height="200" data-theme-id="32763" data-slug-hash="6100b10f1b4ac2961208643560ba7d11" data-default-tab="result" data-user="Vue" data-embed-version="2" data-pen-title="Second Step Axios and Vue" class="codepen">See the Pen <a href="https://codepen.io/team/Vue/pen/6100b10f1b4ac2961208643560ba7d11/">Second Step Axios and Vue</a> by Vue (<a href="https://codepen.io/Vue">@Vue</a>) on <a href="https://codepen.io">CodePen</a>.</p>
 <script async src="https://static.codepen.io/assets/embed/ei.js"></script>
 
-This is a lot easier for us to display, so we can now update our HTML to display only the information we need from the data we've received, and we'll create a [filter](../api/#Vue-filter) to make sure that the decimal is in the appropriate place as well.
+这让展示的工作变得容易了很多，所以我们可以更新 HTML 以从获取的数据中仅仅展示真正需要的信息。我们会创建一个[过滤器](../api/#Vue-filter)来确保小数部分的合理展示。
 
 ```html
 <div id="app">
@@ -81,15 +81,15 @@ filters: {
 <p data-height="300" data-theme-id="32763" data-slug-hash="9d59319c09eaccfaf35d9e9f11990f0f" data-default-tab="result" data-user="Vue" data-embed-version="2" data-pen-title="Third Step Axios and Vue" class="codepen">See the Pen <a href="https://codepen.io/team/Vue/pen/9d59319c09eaccfaf35d9e9f11990f0f/">Third Step Axios and Vue</a> by Vue (<a href="https://codepen.io/Vue">@Vue</a>) on <a href="https://codepen.io">CodePen</a>.</p>
 <script async src="https://static.codepen.io/assets/embed/ei.js"></script>
 
-### Dealing with Errors
+### 错误处理
 
-There are times when we might not get the data we need from the API. There are several reasons that our axios call might fail, including but not limited to:
+很多时候我们可能并没有从 API 获取想要的数据。这可能是由于很多种因素引起的，比如 axios 调用可能会失败，包括：
 
-* The API is down.
-* The request was made incorrectly.
-* The API isn't giving us the information in the format that we anticipated.
+* API 不工作了。
+* 请求发错了。
+* 这个 API 没有返回预想中的格式的信息。
 
-When making this request, we should be checking for just such circumstances, and giving ourselves information in every case so we know how to handle the problem. In an axios call, we'll do so by using `catch`.
+当发送这个请求的时候，我们应该检查一下当前的环境，并自行列出所有可能出现的状态及其处理方式。在 axios 中，我们会通过使用 `catch` 来做这件事。
 
 ```js
 axios
@@ -98,7 +98,7 @@ axios
   .catch(error => console.log(error))
 ```
 
-This will let us know if something failed during the API request, but what if the data is mangled or the API is down? Right now the user will just see nothing. We might want to build a loader for this case, and then tell the user if we're not able to get the data at all.
+这样我们就会知道在请求 API 的过程中是否有地方出错了，不过当数据长时间生成不出来或 API 不工作的时候会怎样呢？现在用户高将会什么都看不到。我们可能想为这种情况构建一个加载效果，然后告诉用户我们还无法获取数据。
 
 ```js
 new Vue({
@@ -152,21 +152,21 @@ new Vue({
 </div>
 ```
 
-You can hit the rerun button on this pen to see the loading status briefly while we gather data from the API:
+你可以重复点击按钮并在我们从 API 获取数据时清晰的看到加载中的状态：
 
 <p data-height="300" data-theme-id="32763" data-slug-hash="6c01922c9af3883890fd7393e8147ec4" data-default-tab="result" data-user="Vue" data-embed-version="2" data-pen-title="Fourth Step Axios and Vue" class="codepen">See the Pen <a href="https://codepen.io/team/Vue/pen/6c01922c9af3883890fd7393e8147ec4/">Fourth Step Axios and Vue</a> by Vue (<a href="https://codepen.io/Vue">@Vue</a>) on <a href="https://codepen.io">CodePen</a>.</p>
 <script async src="https://static.codepen.io/assets/embed/ei.js"></script>
 
-This can be even futher improved with the use of components for different sections and more distinct error reporting, depending on the API you're using and the complexity of your application.
+我们还可以从不同的层次更加深入的改进这个组件的用法，并依赖你使用的 API 以及整个应用的复杂度提供更清晰的错误处理，
 
-## Alternative Patterns
+## 替代方案
 
 ### Fetch API
 
-The [Fetch API](https://developers.google.com/web/updates/2015/03/introduction-to-fetch) is a powerful native API for these types of requests. You may have heard that one of the benefits of the Fetch API is that you don't need to load an external resource in order to use it, which is true! Except... that it's not fully supported yet, so you will still need to use a polyfill. There are also some gotchas when working with this API, which is why many prefer to use axios for now. This may very well change in the future though.
+[Fetch API](https://developers.google.com/web/updates/2015/03/introduction-to-fetch) 是一个强大的原声 API，适用于这种类型的请求。你可能听说过 Fetch API 其中的一个好处，就是你不需要在使用它的时候额外加在一个外部资源，除非浏览器还不支持这个 API，因为这时你需要一个 polyfill。使用这个 API 还有很多别的注意事项，这也是为什么大家现阶段还是更喜欢 axios 多一些。当然这个事情在未来可能会发生改变。
 
-If you're interested in using the Fetch API, there are some [very good articles](https://scotch.io/@bedakb/lets-build-type-ahead-component-with-vuejs-2-and-fetch-api) explaining how to do so.
+如果你对使用 Fetch API 有兴趣，这里有一些[非常棒的文章](https://scotch.io/@bedakb/lets-build-type-ahead-component-with-vuejs-2-and-fetch-api)来解释如何使用它。
 
-## Wrapping Up
+## 总结
 
-There are many ways to work with Vue and axios beyond consuming and displaying an API. You can also communicate with Serverless Functions, post/edit/delete from an API where you have write access, and many other benefits. Due to the straightforward integration of these two libraries, it's become a very common choice for developers who need to integrate HTTP clients into their workflow.
+其实 Vue 和 axios 可以在一起配合的事情不只是访问和展示一个 API。你也可以和 Serverless Function 交流，向一个有写权限的 API 发送 post/edit/delete 请求等等。将这两个库直接集成起来使用会成为开发者集成 HTTP 客户端到他们的工作流时的一种非常普遍的选择，