Javascript 如何使用react路由器dom v5.0.1获取参数

在获取参数之前，如何使用react router dom v5.0.1获取参数，但现在无法获取参数，问题是什么

<BrowserRouter>
      <Route path='/' exact component={Login} />
      <Route path='/register' component={Register} />
      <Route path='/home' component={Home} />
      <Route path='/all/merchant' component={AllMerchant} />
      <Route path='/detail/merchant/:id_merchant' exact component={DetailMerchant} />
      <Route path='/detail/merchant/promo/:id_merchant' component={MerchantByPromo} />
      <Route path='/promo/voucher/by/merchant/' component={MerchantByPromoDetail} />
      <Route path='/all/category' component={Category} />
      <Route path='/category/id/:category_id' component={CategoryById} render = {props => <CategoryById {...props} key={this.props.match.params} /> }/>
      <Route path='/promo/grid/view' component={PromoGridView} />
      {/* params not found */}
      <Route path='/promo/grid/view/by/category/:category_id' component={AllPromoGridView} />
      <Route path='/detail/promo/:voucher_id/category_id/:category_id' component={PromoGridViewDetail} />
      {/* params not found */}
      <Route path='/account' component={Account} />
    </BrowserRouter>

}/>
{/*未找到参数*/}
{/*未找到参数*/}

根据react路由器，它应该可以通过道具

match

在

组件中访问：

例如：

// the route
<Route path="/:id" component={Child} />

/*
...
*/ 

//the component
function Child({ match }) {
  return (
    <div>
      <h3>ID: {match.params.id}</h3>
    </div>
  );
}

//路由
/*
...
*/ 
//组件
函数子项（{match}）{
返回(
ID:{match.params.ID}
);
}
您能澄清一下您的问题吗？您想问什么还不清楚