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<time datetime="2015-07-27T08:57:32.000Z" itemprop="datePublished">2015-07-27</time>
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<a class="article-title" href="/2015/07/27/hjjnew/">IOS网络操作-使用Alamofire和ObjectMapper处理JSON转对象</a>
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<h1 id="Alamofire是一个使用Swift语言写的一个网络库，操作很简单，结合ObjectMapper、AlamofireObjectMapper，可以轻松的将JSON数据转换为对象类型！">Alamofire是一个使用Swift语言写的一个网络库，操作很简单，结合ObjectMapper、AlamofireObjectMapper，可以轻松的将JSON数据转换为对象类型！</h1><h1 id="Alamofire：https://github-com/Alamofire/Alamofire">Alamofire：<a href="https://github.com/Alamofire/Alamofire" target="_blank" rel="external">https://github.com/Alamofire/Alamofire</a></h1><h1 id="ObjectMapper：https://github-com/Hearst-DD/ObjectMapper">ObjectMapper：<a href="https://github.com/Hearst-DD/ObjectMapper" target="_blank" rel="external">https://github.com/Hearst-DD/ObjectMapper</a></h1><h1 id="ALamoObjectmapper：https://github-com/tristanhimmelman/AlamofireObjectMapper">ALamoObjectmapper：<a href="https://github.com/tristanhimmelman/AlamofireObjectMapper" target="_blank" rel="external">https://github.com/tristanhimmelman/AlamofireObjectMapper</a></h1><h1 id="假设有个地址返回如下JSON数据：">假设有个地址返回如下JSON数据：</h1><h2 id="代码块">代码块</h2><figure class="highlight json"><figcaption><span>.compact</span><a href="http://underscorejs.org/#compact" target="_blank" rel="external">Underscore.js</a></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br></pre></td><td class="code"><pre><span class="line">{</span><br><span class="line"> "<span class="attribute">meta</span>":</span><br><span class="line"> <span class="value">{</span><br><span class="line"> "<span class="attribute">total</span>": <span class="value"><span class="string">"16868"</span></span>,</span><br><span class="line"> "<span class="attribute">time</span>": <span class="value"><span class="string">"0.435"</span></span>,</span><br><span class="line"> "<span class="attribute">limit</span>": <span class="value"><span class="string">"10"</span></span>,</span><br><span class="line"> "<span class="attribute">offset</span>": <span class="value"><span class="number">0</span></span>,</span><br><span class="line"> "<span class="attribute">currency</span>": <span class="value"><span class="string">"CNY"</span></span>,</span><br><span class="line"> "<span class="attribute">symbol</span>": <span class="value"><span class="string">"¥"</span></span><br><span class="line"> </span>}</span>,</span><br><span class="line"> "<span class="attribute">products</span>": <span class="value">[</span><br><span class="line"> {</span><br><span class="line"> "<span class="attribute">time_updated</span>": <span class="value"><span class="string">"1432808931"</span></span>,</span><br><span class="line"> "<span class="attribute">commission</span>": <span class="value"><span class="string">"363.42"</span></span>,</span><br><span class="line"> "<span class="attribute">price</span>": <span class="value"><span class="string">"6,056.92"</span></span>,</span><br><span class="line"> "<span class="attribute">sku</span>": <span class="value"><span class="string">"517569"</span></span>,</span><br><span class="line"> "<span class="attribute">upc</span>": <span class="value"><span class="string">""</span></span>,</span><br><span class="line"> "<span class="attribute">pweight</span>": <span class="value"><span class="literal">null</span></span>,</span><br><span class="line"> "<span class="attribute">product_id</span>": <span class="value"><span class="string">"82808bcd27eeb65dd15740aee40ec07c"</span></span>,</span><br><span class="line"> "<span class="attribute">product_image</span>": <span class="value"><span class="string">"http://images.rewardstyle.com/img?v=1.3&p=82808bcd27eeb65dd15740aee40ec07c"</span></span>,</span><br><span class="line"> "<span class="attribute">product_type</span>": <span class="value"><span class="string">"1"</span></span>,</span><br><span class="line"> "<span class="attribute">product_name</span>": <span class="value"><span class="string">"Cape-back crepe and chiffon mini dress"</span></span>,</span><br><span class="line"> "<span class="attribute">advertiser</span>": <span class="value"><span class="string">"NET-A-PORTER UK"</span></span>,</span><br><span class="line"> "<span class="attribute">designer</span>": <span class="value"><span class="string">"Gareth Pugh"</span></span>,</span><br><span class="line"> "<span class="attribute">category</span>": <span class="value"><span class="string">"WOMEN->Clothing->Dresses"</span></span><br><span class="line"> </span>},</span><br><span class="line"> {</span><br><span class="line"> "<span class="attribute">time_updated</span>": <span class="value"><span class="string">"1432808931"</span></span>,</span><br><span class="line"> "<span class="attribute">commission</span>": <span class="value"><span class="string">"1,359.23"</span></span>,</span><br><span class="line"> "<span class="attribute">price</span>": <span class="value"><span class="string">"22,653.85"</span></span>,</span><br><span class="line"> "<span class="attribute">sku</span>": <span class="value"><span class="string">"549499"</span></span>,</span><br><span class="line"> "<span class="attribute">upc</span>": <span class="value"><span class="string">""</span></span>,</span><br><span class="line"> "<span class="attribute">pweight</span>": <span class="value"><span class="literal">null</span></span>,</span><br><span class="line"> "<span class="attribute">product_id</span>": <span class="value"><span class="string">"e147fbbf30c65538b367f3a6ab539252"</span></span>,</span><br><span class="line"> "<span class="attribute">product_image</span>": <span class="value"><span class="string">"http://images.rewardstyle.com/img?v=1.3&p=e147fbbf30c65538b367f3a6ab539252"</span></span>,</span><br><span class="line"> "<span class="attribute">product_type</span>": <span class="value"><span class="string">"1"</span></span>,</span><br><span class="line"> "<span class="attribute">product_name</span>": <span class="value"><span class="string">"Woven suede tote"</span></span>,</span><br><span class="line"> "<span class="attribute">advertiser</span>": <span class="value"><span class="string">"NET-A-PORTER UK"</span></span>,</span><br><span class="line"> "<span class="attribute">designer</span>": <span class="value"><span class="string">"Loewe"</span></span>,</span><br><span class="line"> "<span class="attribute">category</span>": <span class="value"><span class="string">"WOMEN->Bags->Tote"</span></span><br><span class="line"> </span>}</span><br><span class="line"> ]</span><br><span class="line"></span>}</span><br></pre></td></tr></table></figure>
<h1 id="使用对象的概念来解读这段JSON数据，它包含Meta和Product：Meta是一个对象，Products是一个数组类型，包含了多个Product对象。">使用对象的概念来解读这段JSON数据，它包含Meta和Product：Meta是一个对象，Products是一个数组类型，包含了多个Product对象。</h1><h1 id="我们首先使用ObjectMapper库定义的规则，来写一个实体类。">我们首先使用ObjectMapper库定义的规则，来写一个实体类。</h1><figure class="highlight swift"><figcaption><span>.compact</span><a href="http://underscorejs.org/#compact" target="_blank" rel="external">Underscore.js</a></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Meta</span> : <span class="title">Mappable</span></span>{</span><br><span class="line"> <span class="keyword">var</span> total:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> time:<span class="type">Double</span>?</span><br><span class="line"> <span class="keyword">var</span> limit:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> offset:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> currency:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> symbol:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">init</span>(){}</span><br><span class="line"> required <span class="keyword">init</span>?(<span class="number">_</span> <span class="built_in">map</span>: <span class="type">Map</span>){</span><br><span class="line"> mapping(<span class="built_in">map</span>)</span><br><span class="line"> }</span><br><span class="line"> <span class="func"><span class="keyword">func</span> <span class="title">mapping</span><span class="params">(<span class="built_in">map</span>: Map)</span></span> {</span><br><span class="line"> total <- <span class="built_in">map</span>[<span class="string">"total"</span>]</span><br><span class="line"> time <- <span class="built_in">map</span>[<span class="string">"time"</span>]</span><br><span class="line"> limit <- <span class="built_in">map</span>[<span class="string">"limit"</span>]</span><br><span class="line"> offset <- <span class="built_in">map</span>[<span class="string">"offset"</span>]</span><br><span class="line"> currency <- <span class="built_in">map</span>[<span class="string">"currency"</span>]</span><br><span class="line"> symbol <- <span class="built_in">map</span>[<span class="string">"symbol"</span>]</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Product</span> : <span class="title">Mappable</span></span>{</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">var</span> time_updated:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> commission:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> price:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> sku:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> product_id:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> product_image:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> product_name:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> advertiser:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> designer:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">var</span> category:<span class="type">String</span>?</span><br><span class="line"> <span class="keyword">init</span>(){}</span><br><span class="line"> </span><br><span class="line"> required <span class="keyword">init</span>?(<span class="number">_</span> <span class="built_in">map</span>: <span class="type">Map</span>) {</span><br><span class="line"> mapping(<span class="built_in">map</span>)</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> <span class="func"><span class="keyword">func</span> <span class="title">mapping</span><span class="params">(<span class="built_in">map</span>: Map)</span></span> {</span><br><span class="line"> time_updated <- <span class="built_in">map</span>[<span class="string">"prtime_updated"</span>]</span><br><span class="line"> commission <- <span class="built_in">map</span>[<span class="string">"age"</span>]</span><br><span class="line"> price <- <span class="built_in">map</span>[<span class="string">"price"</span>]</span><br><span class="line"> sku <- <span class="built_in">map</span>[<span class="string">"sku"</span>]</span><br><span class="line"> product_id <- <span class="built_in">map</span>[<span class="string">"product_id"</span>]</span><br><span class="line"> product_image <- <span class="built_in">map</span>[<span class="string">"product_image"</span>]</span><br><span class="line"> product_name <- <span class="built_in">map</span>[<span class="string">"product_name"</span>]</span><br><span class="line"> advertiser <- <span class="built_in">map</span>[<span class="string">"advertiser"</span>]</span><br><span class="line"> designer <- <span class="built_in">map</span>[<span class="string">"designer"</span>]</span><br><span class="line"> category <- <span class="built_in">map</span>[<span class="string">"category"</span>]</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h1 id="每个实体类都实现了Mappable协议。这仅仅是JSON数据中的两个对象，现在我们要再声明下整个JSON数据的对象定义，它将作为顶层包含着Meta类和Product类：">每个实体类都实现了Mappable协议。这仅仅是JSON数据中的两个对象，现在我们要再声明下整个JSON数据的对象定义，它将作为顶层包含着Meta类和Product类：</h1><figure class="highlight swift"><figcaption><span>.compact</span><a href="http://underscorejs.org/#compact" target="_blank" rel="external">Underscore.js</a></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">ProductResponse</span>:<span class="title">Mappable</span></span>{</span><br><span class="line"> <span class="keyword">var</span> meta:<span class="type">Meta</span>?</span><br><span class="line"> <span class="keyword">var</span> products:[<span class="type">Product</span>]?</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">init</span>(){}</span><br><span class="line"> required <span class="keyword">init</span>?(<span class="number">_</span> <span class="built_in">map</span>: <span class="type">Map</span>) {</span><br><span class="line"> mapping(<span class="built_in">map</span>)</span><br><span class="line"> }</span><br><span class="line"> <span class="func"><span class="keyword">func</span> <span class="title">mapping</span><span class="params">(<span class="built_in">map</span>: Map)</span></span> {</span><br><span class="line"> meta <- <span class="built_in">map</span>[<span class="string">"meta"</span>]</span><br><span class="line"> products <- <span class="built_in">map</span>[<span class="string">"products"</span>]</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h1 id="接下来，就可以使用Alamofire来操作了。这时候，可以使用AlamofireObjectMapper库，它使用extension扩展了Alamofire的response方法：">接下来，就可以使用Alamofire来操作了。这时候，可以使用AlamofireObjectMapper库，它使用extension扩展了Alamofire的response方法：</h1><figure class="highlight oxygene"><figcaption><span>.compact</span><a href="http://underscorejs.org/#compact" target="_blank" rel="external">Underscore.js</a></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">Alamofire.request(<span class="function"><span class="keyword">Method</span>.<span class="title">GET</span>, "请求的地址", <span class="title">parameters</span>:</span> <span class="keyword">nil</span>, encoding: ParameterEncoding.URL).responseObject <span class="comment">{ (response:ProductResponse?, error:NSError?) -> Void in</span><br><span class="line"> if let products = response?.products{</span><br><span class="line"> for p in products{</span><br><span class="line"> println(p.product_name)</span><br><span class="line"> }</span></span><br><span class="line"> }</span><br><span class="line">}<span class="comment">// end request</span></span><br></pre></td></tr></table></figure>
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<p>Welcome to <a href="http://hexo.io/" target="_blank" rel="external">Hexo</a>! This is your very first post. Check <a href="http://hexo.io/docs/" target="_blank" rel="external">documentation</a> for more info. If you get any problems when using Hexo, you can find the answer in <a href="http://hexo.io/docs/troubleshooting.html" target="_blank" rel="external">troubleshooting</a> or you can ask me on <a href="https://github.com/hexojs/hexo/issues" target="_blank" rel="external">GitHub</a>.</p>
<h2 id="Quick_Start">Quick Start</h2><h3 id="Create_a_new_post">Create a new post</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo new <span class="string">"My New Post"</span></span><br></pre></td></tr></table></figure>
<p>More info: <a href="http://hexo.io/docs/writing.html" target="_blank" rel="external">Writing</a></p>
<h3 id="Run_server">Run server</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo server</span><br></pre></td></tr></table></figure>
<p>More info: <a href="http://hexo.io/docs/server.html" target="_blank" rel="external">Server</a></p>
<h3 id="Generate_static_files">Generate static files</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo generate</span><br></pre></td></tr></table></figure>
<p>More info: <a href="http://hexo.io/docs/generating.html" target="_blank" rel="external">Generating</a></p>
<h3 id="Deploy_to_remote_sites">Deploy to remote sites</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo deploy</span><br></pre></td></tr></table></figure>
<p>More info: <a href="http://hexo.io/docs/deployment.html" target="_blank" rel="external">Deployment</a></p>
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