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redux, koa, express 中间件对比实现分析
文中代码有误。
while(idx < stack.length) {
mid = stack[idx++];
mid(req, res, next);
}
按照这里的简化代码,next根本不需要调用,直接 while 循环循环就可以把所有的中间件走一遍了。
根本不需要 next 来移交控制权。
实际上 express 里面的 while 和你这里的 while 不是同一个意思。
建议修改或注释。
被这个简化代码坑了半天...
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