javascript - 当尝试调用不是/的其他路由时，golang net/http会给出404错误

Question

我有一个Web应用程序，其中有React作为前端，而Golang作为后端。
我的想法是使用http.handle提供服务到React Router的路径，然后渲染正确的组件。

问题是，当我尝试连接到localhost:8080时，一切顺利，但是当我尝试连接到localhost:8080/example时，给了我404 page not found
为了提供我的应用程序，我使用以下代码:

package main

import (
    "net/http"
    "log"
)

// frontend public path 
const public = "../frontend/public/";

func main(){
    // route handling
    http.Handle("/", http.FileServer(http.Dir(public)));
    http.Handle("/example", http.FileServer(http.Dir(public)));

    log.Println("Listening on http://locahost:8080");

    log.Fatal(http.ListenAndServe(":8080", nil));
}

我的矩形路由器:

import React from 'react';
import {BrowserRouter as Router, Switch, Route} from 'react-router-dom';
import Home from '../pages/Home/Home';
import Admin from '../pages/Example/Example';

export default class RouteHandler extends React.Component{
    render(){
        return(
            <Router>
                <Switch>
                    <Route exact path='/'>
                        <Home />
                    </Route>
                    <Route exact path='/example'>
                        <Admin />
                    </Route>
                </Switch>
            </Router>
        )
    }
}

Answer 1

我找到了一个解决方案，问题是使用http.Handle("/example", http.FileServer(http.Dir(public))); golang试图找到路径../frontend/public/example。

为了解决这个问题，我使用了http.StripPrefix:

package main

import (
    "net/http"
    "log"
)

// frontend public path 
const public = "../frontend/public/";

func main(){
    // route handling
    http.Handle("/", http.FileServer(http.Dir(public)));
    http.Handle("/admin/", http.StripPrefix("/admin/", http.FileServer(http.Dir(public))));

    log.Println("Listening on http://locahost:8080");

    log.Fatal(http.ListenAndServe(":8080", nil));
}