node.js - 如何在 Express 路由中设置 Next.js 渲染？

Question

app.js

const express = require('express');
const next = require('next');
const port = parseInt(process.env.PORT, 10) || 3000;
const dev = process.env.NODE_ENV !== 'production';

const app = next({ dev });
const handle = app.getRequestHandler();

app
  .prepare()
  .then(() => {
    const server = express();

    const indexRouter = require('./routes/indexRouter');

    server.use(indexRouter);
    server.all('*', (req, res) => {
      return handle(req, res);
    });

    server.listen(port, (err) => {
      if (err) throw err;
      console.log('> Ready on http://localhost:' + port);
    });
  })
  .catch((ex) => {
    console.error(ex.stack);
    process.exit(1);
  });

indexRoutes.js

const express = require('express');
const router = express.Router();
const userController = require('../controllers/user');

router.post('/api/signup', userController.signup);

我想通过 indexRoutes.js 中的 Next.js 渲染组件。我看到其他人在主要的 app.js 中这样做。

server.get('/login', (req, res) => {
  app.render(req, res, '/login');
});

但我不明白如何在单独的文件中完成它。我尝试这样做，但没有结果。

indexRoutes.js

const express = require('express');
const next = require('next');
const dev = process.env.NODE_ENV !== 'production';
const app = next({ dev });
const router = express.Router();
const userController = require('../controllers/user');

router.post('/api/signup', userController.signup);
router.get('/login', (req, res) => {
  return app.render(req, res, '/login'); // this does not work
});

我该如何解决我的问题？

Answer 1

如果您想将路由放在单独的文件中，您可以创建以下 indexRouter.js 文件:

// routes/indexRouter.js

const userController = require('../controllers/user');

const indexRouter = (server, app) => {
    server.post('/api/signup', userController.signup);
    server.get('/login', (req, res) => {
        return app.render(req, res, '/login');
    });
};

module.exports = indexRouter;

然后您可以从 app.js 请求它并将 server 和 app 对象传递给它。

// app.js

// ...

app
    .prepare()
    .then(() => {
        const server = express();

        const indexRouter = require('./routes/indexRouter');

        indexRouter(server, app)
        
        server.all('*', (req, res) => {
            return handle(req, res);
        });

        server.listen(port, (err) => {
            if (err) throw err;
            console.log('> Ready on http://localhost:' + port);
        });
    })
    .catch((ex) => {
        console.error(ex.stack);
        process.exit(1);
    });