快递 - 试图模仿控制器。得到Router.use（）需要回调函数，但得到[对象字符串]错误

Question

我想在Node.js和Express框架中创建控制器。我创建了app.js,routes/index.js和controller/index.js。

这里的每一个文件代码：

var express = require("express"), 
    path = require("path"), 
    indexRoutes = require("./routes/index"); 

var app = express(); 

app.use("view engine", "ejs"); 
app.use("views", path.join(__dirname, "views")); 

app.use("/", indexRoutes); 

var port = process.env.PORT || 3000; 
app.listen(port, function() { 
    console.log("listening to port " + port); 
}); 

而且routes/index.js：

var express = require("express"); 
var controller = require("../controller/index"); 

var router = express.Router(); 

router.get("/", controller.index); 
router.get("/list", controller.list); 

module.exports = router; 

而且controller/index.js：

var indexController = { 
    index: function(req, res) { 
     res.send("index action"); 
    }, 
    list: function(req, res) { 
     res.send("list action"); 
    } 
} 

module.exports = indexController; 

当我运行的服务器。我在我的终端出现这个错误：

Error: Router.use() requires callback functions but got a [object String] 
    at Function.proto.use (/media/misc/www/expself/node_modules/express/lib/router/index.js:327:11) 
    at Function.app.use (/media/misc/www/expself/node_modules/express/lib/application.js:195:16) 
    at Object.<anonymous> (/media/misc/www/expself/app.js:7:5) 
    at Module._compile (module.js:456:26) 
    at Object.Module._extensions..js (module.js:474:10) 
    at Module.load (module.js:356:32) 
    at Function.Module._load (module.js:312:12) 
    at Function.Module.runMain (module.js:497:10) 
    at startup (node.js:119:16) 
    at node.js:906:3 

任何帮助？我很初学者的Node.js

Answer 1

这些：

app.use("view engine", "ejs"); 
app.use("views", path.join(__dirname, "views")); 

应该是：

app.set("view engine", "ejs"); 
app.set("views", path.join(__dirname, "views")); 

app.use()仅用于中间件。