如何使用React Router V4从axios拦截器重定向？

Question

收到403错误时，我想在axios拦截器中进行重定向。但是我如何才能访问React组件之外的历史记录呢？

在React-Router v4中以编程方式导航中，它是在React组件的上下文中，但是这里我在axios上下文中尝试

axios.interceptors.response.use(function (response) {
    // Do something with response data
    return response;
  }, function (error) {
    // Do something with response error
    if(error.response.status === 403) { console.log("Redirection needed !"); }

    // Trow errr again (may be need for some other catch)
    return Promise.reject(error);
});

Answer 1

我通过从Component树之外访问Redux
Store并通过注销按钮发送相同的操作来解决了这一问题，因为我的拦截器是在单独的文件中创建的，并且在加载任何Component之前先进行加载。

因此，基本上，我做了以下工作：

在index.js文件中：

//....lots of imports ommited for brevity
import { createStore, applyMiddleware } from 'redux';
import reduxThunk from 'redux-thunk';
import reducers from './reducers';
import { UNAUTH_USER } from './actions/types'; //this is just a constants file for action types.

const createStoreWithMiddleware = applyMiddleware(reduxThunk)(createStore);
const store = createStoreWithMiddleware(reducers);

//Here is the guy where I set up the interceptors!
NetworkService.setupInterceptors(store);

//lots of code ommited again...
//Please pay attention to the "RequireAuth" below, we'll talk about it later

ReactDOM.render(
  <Provider store={store}>
      <BrowserRouter>
          <div>
              <Header />
              <main className="plan-container">
                  <Switch>
                      <Route exact path="/" component={Landing} />
                      <Route exact path="/login" component={Login} />
                      <Route exact path="/signup" component={Signup} />
                      <Route exact path="/calendar" component={RequireAuth(Calendar)} />
                      <Route exact path="/profile" component={RequireAuth(Profile)} />
                  </Switch>
              </main>
          </div>
      </BrowserRouter>
  </Provider>
  , document.querySelector('.main-container'));

并在network-service.js文件：

import axios        from 'axios';
import { UNAUTH_USER } from '../actions/types';

export default {
  setupInterceptors: (store) => {

    // Add a response interceptor
    axios.interceptors.response.use(function (response) {
        return response;
    }, function (error) {
        //catches if the session ended!
        if ( error.response.data.token.KEY == 'ERR_EXPIRED_TOKEN') {
            console.log("EXPIRED TOKEN!");
            localStorage.clear();
            store.dispatch({ type: UNAUTH_USER });
        }
        return Promise.reject(error);
    });

  }
};

最后但并非最不重要的一点是，我有一个HOC（高阶组件），它将受保护的组件包装在会话结束时进行实际重定向的位置。这样，当我触发动作类型UNAUTH_USER时，它将我的化简器上的isLogged属性设置session为false，因此该组件会随时得到通知并为我进行重定向。

require-auth.js组件文件：

import React, { Component } from 'react';
import { connect } from 'react-redux';

export default function(ComposedComponent) {

    class RequireAuth extends Component {

        componentWillMount() {
            if(!this.props.session.isLogged) {
                this.props.history.push('/login');
            }
        };

        componentWillUpdate(nextProps) {
            if(!nextProps.session.isLogged) {
                this.props.history.push('/login');
            }
        };

        render() {
            return <ComposedComponent {...this.props} />
        }
    }

    function mapStateToProps(state) {
        return { session: state.session };
    }

    return connect(mapStateToProps)(RequireAuth);
}

希望有帮助！