go install报错

Question

./main.go:17:2: cannot use m (type middleWareHandler) as type http.Handler in return argument:

middleWareHandler does not implement http.Handler (missing ServeHTTP method)

#代码如下

type middleWareHandler struct {
  r *httprouter.Router
}

func NewMiddleWareHandler(r *httprouter.Router) http.Handler {

  m := middleWareHandler{}
  m.r = r
  return m

}

Answer 1

你看下main.go文件中函数名为ServeHTTP的函数是否正确

Answer 2

定义了没有使用

Answer 3

很显然，middleWareHandler这个类没有实现 http.Handler 的方法