SearchBar组件添加的SEARCH_BAR参数与react-router参数_k冲突

[zhouhailong]

Demo：https://codepen.io/zhouhailong/pen/rpxMXo
SEARCH_BAR参数添加到_k参数后面会导致刷新页面时提示找不到此route

http://127.0.0.1:3000/#/search?_k=f5zyqf&SEARCH_BAR=1513578541095