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微信开发学习日记(8):7步看懂weiphp插件机制,核心目标是响应微信请求

Jun 13, 2016 pm 12:18 PM
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微信开发学习日记(八):7步看懂weiphp插件机制,核心目标是响应微信请求
又经过了几个小时的梳理、回顾,截至目前,终于对weiphp这个框架的机制搞明白了些。想要完全明白,自然还需要大把的时间。

   
第1步:
   配置微信公众号,http://weiphp.jiutianniao.com/ ... .html 

  从上面这个配置可以看出,微信请求呗weiphp的入口文件index.php接收了,可能会被/home/weixin/index/这个action响应。

第2步:
   index.php入口文件,校验了是否是微信请求。 
  /**
 * 微信接入验证
 * 在入口进行验证而不是放到框架里验证,主要是解决验证URL超时的问题
 */
if (! empty ( $_GET ['echostr'] ) && ! empty ( $_GET ["signature"] ) && ! empty ( $_GET ["nonce"] )) {
}

第3步:
  入口已经验证过了,即不是“第一次”  ,请求会被分发到home模块的WeixinController的index这个方法。

第4步:
  在index方法中, 首先获得的就是token、openid、粉丝等信息。
  最关键的处理是,回复数据。
  // 回复数据
$this->reply ( $data, $weixin );

第5步:
   在reply函数中, 就是寻找合适的插件进行消息响应。

   涉及到的问题有,安装了哪些插件、哪些启用了、哪些有权限。
  
    准备了可用插件之后,  根据消息的类型,事件、地理位置、订阅,寻找合适的插件,比如如果有location事件,插件就执行对应的回调方法。

    还有的情况是,消息。

   根据关键字,回复消息。

   这个时候,问题就变成了 插件定位问题。

   a.通过插件标识名、插件名或者自定义关键词来定位处理的插件
   b.通过精准关键词来定位处理的插件 token=0是插件安装时初始化的模糊关键词,所有公众号都可以用
   c.通过模糊关键词来定位处理的插件
   d.最终也无法定位到插件,终止操作 

    疑问:通过代码,发现location等事件,有很多插件都会处理这个事件。而消息,只会找到一个插件。是这么个情况么?

 第6步:
    插件的weixinmodel。

    /**
 * Vote模型
 */
class WeixinAddonModel extends WeixinModel {
function reply($dataArr, $keywordArr = array()) {
}

  微信插件,基本都会有个WeixinModel类,如果有必要,会响应微信的请求。

 第7步:
    URL响应问题。

    这个地方一直有疑惑,如果所谓的插件机制,就是根据用户发送到关键词,让不同的类-插件去响应,这也太没有“含金量” 了吧。难道微信的核心玩法就是这个东东么?

   class VoteController extends AddonsController {
   }

   每个插件,可能会有Controller,响应URL请求。比如,后台管理和前台管理(不会直接和微信进行交互) ,会有一些管理方法,设置信息之类的。

  另外,有些在weixinModel的reply 方法中,可能包含了插件内部定义的url,这个感觉才真的很有价值。

  总结:weiphp这个微信框架,简要总结起来就4点。
1.weiphp基于Thinkphp和Onethink。疑问的是,weiphp有没有对Thinkphp和Onethink的核心代码有改动。如果有改动的话,更多的应该是对Onethink改动。
2.weiphp的核心入口,就是index.php和/home/weixin/index方法,验证和响应微信请求。
3. 插件机制,感觉就是根据关键字找插件,让插件响应请求。
4.后台管理系统、用户端的前端管理、插件机制,都是为了微信框架的核心目标“响应微信请求”。
  这才是最最关键的地方呀。

  武汉九天鸟-武汉领先的移动互联网系统开发商
  九天鸟问答-http://ask.jiutianniao.com
  九天鸟博客-http://blog.jiutianniao.com
  九天鸟官网-建设中,敬请期待
  2015年4月17日 

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