增加一个请求的全局拦截器（可参考vue框架的全局拦截器）

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增加一个请求的全局拦截器（可参考vue框架的全局拦截器）Add a request global interceptor (refer to the global interceptor of the vue framework)

Framework type problem type API / component name terminal type wechat version basic library version applet bug initiates back end request (not limited to) wx.request ）No wechat IOS client https://developers.weixin.qq.com/miniprogram/dev/apietworkequest/wx.request.html The business code of each request should be accompanied by a token. If there is a global interceptor, it is good. It is not necessary to add the same parameters to the code of each request. (after a business request is initiated, the global interceptor adds a token to the request header.) in the code fragment, the business code of each request should be accompanied with a token. If there is a global interceptor, it is good. It is not necessary to add the same parameters to the code of each request. (after a service initiates a request, the global interceptor adds a token to the request header)

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