SyntaxError：意外的令牌节点js教程

所以我正在做这个教程https://scotch.io/tutorials/build-a-restful-api-using-node-and-express-4当我尝试启动服务器时，我得到这个错误

/server.js:84 .put(function(req, res) { ^ SyntaxError: Unexpected token . at exports.runInThisContext (vm.js:73:16) at Module._compile (module.js:443:25) at Object.Module._extensions..js (module.js:478:10) at Module.load (module.js:355:32) at Function.Module._load (module.js:310:12) at Function.Module.runMain (module.js:501:10) at startup (node.js:129:16) at node.js:814:3 

这就是我的代码的样子

 // server.js var router = express.Router(); // get an instance of the express Router // middleware to use for all requests router.use(function(req, res, next){ // do logging console.log('For every request this message is being shown.'); next(); // make sure we go to the next routes and don't stop here }); // test route to make sure everything is working router.get('/', function(req, res){ res.json({ message: 'Whatsup Welcome to my first node api!'}); }); // more routes for our API will continue here // on routes that end in /Bears router.route('/bears') // create a bear (accessed at POST http://localhost:8080/bears) .post(function(req, res) { var bear = new Bear(); // create a new instance of the Bear model bear.name = req.body.name; // set the bears name (comes from the request) bear.save(function(err) { if (err) res.send(err); res.json({ message: 'Bear has been born!' }); }); }) // get all the bears (accessed at GET http://localhost:8080/api/bears) .get(function(req, res) { Bear.find(function(err, bears) { if (err) res.send(err); res.json(bears); }); }); // on routes that end in /bears/:bear_id // ------------------------------------------------ router.route('/bears/:bear_id') // get all the bears (accessed at GET http://localhost:8080/api/bears/:bear_id) "line :84 ->>>" .get(function(req, res) { Bear.find(function(err, bears) { if (err) res.send(err); res.json(bears); }); }); // update the bear with this id (accessed at PUT http://localhost:8080/api/bears/:bear_id) .put(function(req, res) { // use our bear model to find the bear we want Bear.findById(req.params.bear_id, function(err, bear) { if (err) res.send(err); bear.name = req.body.name; // update the bears info // save the bear bear.save(function(err) { if (err) res.send(err); } res.json({ message: 'Bear updated!' }); }); }); }); // REGISTER OUR ROUTES here // all of our routes will be prefixed with /api app.use('/api', router); // START THE server app.listen(port); console.log('Magic is happening on port:' + port); 

Answer 1

标记为84的行不是错误的地方。 在下一个函数之后，你调用该块：

 // on routes that end in /bears/:bear_id // ------------------------------------------------ router.route('/bears/:bear_id') // get all the bears (accessed at GET http://localhost:8080/api/bears/:bear_id) "line :84 ->>>" .get(function(req, res) { Bear.find(function(err, bears) { if (err) res.send(err); res.json(bears); }); }); 

你刚刚用分号完成了这个get()调用，但是你继续在预期的对象上调用下一个函数：

  // update the bear with this id (accessed at PUT http://localhost:8080/api/bears/:bear_id) .put(function(req, res) { // use our bear model to find the bear we want Bear.findById(req.params.bear_id, function(err, bear) { if (err) res.send(err); bear.name = req.body.name; // update the bears info // save the bear bear.save(function(err) { if (err) res.send(err); } res.json({ message: 'Bear updated!' }); }); }); }); 

如果您在.put(function(req, res){ line .put(function(req, res){之前删除分号， .put(function(req, res){应该有语法错误。