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yii2 输出xml格式数据 - 白狼栈

May 20, 2016 am 10:14 AM

作者:白狼 出处:http://www.manks.top/yii2_xml_response.html.html本文版权归作者,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接,否则保留追究法律责任的权利。

php中对xml的处理,虽然说实际开发中目前用的少了,但是难免会用到,用到的时候呢,总结起来还是稍稍有那么一丁点的麻烦。

我们来看看yii2中是怎么对xml进行处理的。会超乎你想象的简单哦。

我们以输出xml格式的数据为例。

既然是输出,必然就涉及到web请求与响应了,不熟悉的可以先去了解下HTTP协议。

yii2中支持以下几种返回格式,均可自定义配置。

我们就是冲着XML来的。

先来看一种简单的输出xml格式数据

<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> actionTest () { 
    \Yii</span>::<span style="color: #800080;">$app</span>->response->format = \yii\web\Response::<span style="color: #000000;">FORMAT_XML; 
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> [ 
        </span>'message' => 'hello world', 
        'code' => 100,<span style="color: #000000;"> 
    ]; 
}</span>
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这里我们指定了reponse响应格式 FORMAT_XML,然后访问这个test方法就可以看到页面上输出了xml类型的数据

<span style="color: #0000ff;"><span style="color: #800000;">response</span><span style="color: #0000ff;">></span> 
    <span style="color: #0000ff;"><span style="color: #800000;">message</span><span style="color: #0000ff;">></span>hello world<span style="color: #0000ff;"></span><span style="color: #800000;">message</span><span style="color: #0000ff;">></span> 
    <span style="color: #0000ff;"><span style="color: #800000;">code</span><span style="color: #0000ff;">></span>100<span style="color: #0000ff;"></span><span style="color: #800000;">code</span><span style="color: #0000ff;">></span> 
<span style="color: #0000ff;"></span><span style="color: #800000;">response</span><span style="color: #0000ff;">></span></span></span></span>
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上面提到的方式未免有点麻烦,麻烦在配置多项的时候就不是那么方便了,我们来自己创建reponse对象试一试

 
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<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> actionTest () { 
    </span><span style="color: #0000ff;">return</span> \Yii::<span style="color: #000000;">createObject([ 
        </span>'class' => 'yii\web\Response', 
        'format' => \yii\web\Response::FORMAT_XML, 
        'formatters' =><span style="color: #000000;"> [ 
            \yii\web\Response</span>::FORMAT_XML =><span style="color: #000000;"> [ 
                </span>'class' => 'yii\web\XmlResponseFormatter', 
                'rootTag' => 'urlset', <span style="color: #008000;">//</span><span style="color: #008000;">根节点 </span>
                'itemTag' => 'url', <span style="color: #008000;">//</span><span style="color: #008000;">单元 </span>
            ],<span style="color: #000000;"> 
        ]</span>, 
        'data' => [ <span style="color: #008000;">//</span><span style="color: #008000;">要输出的数据 </span>
<span style="color: #000000;">            [ 
                </span>'loc' => 'http://********',<span style="color: #000000;"> 
            ]</span>,<span style="color: #000000;"> 
        ]</span>,<span style="color: #000000;"> 
    ]); 
}</span>
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为了方便接下来的说明,上面一并做了配置,可以看到我们配置了响应的格式format,单独做了些配置,包括配置根节点rootTag,单元itemTag以及数据类型。有同学注意到了,这里其实我们很简单的就实现了一个站点地图的xml格式输出。是的,就是这么简单。

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