context.go
func (ctx *Context) ChangeStaticPath(oldPath, newPath string) {
	if !filepath.IsAbs(oldPath) {
		oldPath = filepath.Join(Root, oldPath)
	}
	dir := statics.Get(oldPath)
	if dir != nil {
		statics.Delete(oldPath)

		if !filepath.IsAbs(newPath) {
			newPath = filepath.Join(Root, newPath)
		}
		*dir = http.Dir(newPath)
		statics.Set(dir)
	}
}
func (ctx *Context) ChangeStaticPath(oldPath, newPath string) {
	if !filepath.IsAbs(oldPath) {
		oldPath = filepath.Join(Root, oldPath)
	}
	dir := statics.Get(oldPath)
	if dir != nil {
		statics.Delete(oldPath)

		if !filepath.IsAbs(newPath) {
			newPath = filepath.Join(Root, newPath)
		}
		*dir = http.Dir(newPath)
		statics.Set(dir)
	}
}
// ChangeStaticPath changes static path from old to new one.