在hapi服务器中获取错误

Question

我正在构建一个简单的日志应用程序，并试图实现模块化以使代码更具可读性。然而，当我启动我的应用程序时，我遇到了一些麻烦。我有两个文件，index.js这是我的服务器配置，并有routes.js我有我的路由逻辑。 我写过我的路线的方式是根据the hapi api中的api文档。

我希望有人可以帮助我了解为什么我收到以下错误：

/Users/mario/projects/loGym/node_modules/hapi/node_modules/hoek/lib/index.js:425 
    throw new Error(msgs.join(' ') || 'Unknown error'); 
     ^
Error: Missing or undefined handler:/
    at Object.exports.assert (/Users/mario/projects/loGym/node_modules/hapi/node_modules/hoek/lib/index.js:425:11) 
    at new module.exports.internals.Route (/Users/mario/projects/loGym/node_modules/hapi/lib/route.js:36:10) 
    at /Users/mario/projects/loGym/node_modules/hapi/lib/router.js:110:25 
    at Array.forEach (native) 
    at /Users/mario/projects/loGym/node_modules/hapi/lib/router.js:107:17 
    at Array.forEach (native) 
    at internals.Router.add (/Users/mario/projects/loGym/node_modules/hapi/lib/router.js:104:13) 
    at internals.Server._route (/Users/mario/projects/loGym/node_modules/hapi/lib/server.js:471:18) 
    at internals.Server.route (/Users/mario/projects/loGym/node_modules/hapi/lib/server.js:465:10) 
    at Object.<anonymous> (/Users/mario/projects/loGym/index.js:10:8) 

我这不是正确导出模块？

这里是我的routes.js代码：

var path = require('path'); 
var _ = require('underscore'); 
var couchbase = require('couchbase'); 

//Connect to database. 

var db = db || new couchbase.Connection({host: 'localhost:8091', bucket: 'default'}, function(err) { 
    if (err) { 
     console.log('Connection Error', err); 
    } else { 
     console.log('Connected!'); 
    } 
}); 
console.log(db); 


module.exports = [ 
    {method: 'GET', path: '/static/{param*}', config: { handler: { directory: { path: 'static'}}}}, 
    {method: 'GET', path:'/', config: landingPage}, 
    {method: 'GET', path:'/workouts', config: getWorkouts}, 
    {method: 'GET', path:'/workouts/musclegroup', config: getMusclegroup}, 
    {method: 'POST', path:'/addworkout', config: addWorkout} 
]; 



var landingPage = { 
    handler: function(req, reply) { 
     reply.file('index.html'); 
    } 
}; 

var getWorkouts = { 
    handler: function (req, reply) { 
     // set options for databse query 
     var q ={ 
      descending: true, 
      stale: false 
     }; 

     // show multiple exercises - db.view(designDocument, viewName, options) 
     db.view('workout', 'exercise', q).query(function(err, values){ 
      // use pluck method from underscore to retrieve data 
      var keys = _.pluck(values, 'id'); 
      console.log("Keys: " + keys); 

      //fetch multiple documents based on the 'keys' object 
      db.getMulti(keys, null, function(err, results){ 
       console.log('Results: ' + results); 

       var workouts = []; 
       for (var prop in results) { 
        workouts.push(results[prop].value); 
       } 
       reply(workouts); 
      }); 
     }); 
    } 
}; 


var getMusclegroup = { 
    handler: function (req, reply) { 
     var q = { 
      descending: true, 
      stale: false 
     }; 

     db.view('workout', 'exercise', q).query(function(err, values){ 

      var keys = _.pluck(values, 'id'); 

      db.getMulti(keys, null, function(err, results){ 

       var muscleGroups = []; 
       for (var prop in results) { 
        console.log(typeof results); 
        console.log(results[prop].value.workout); 
        muscleGroups.push(results[prop].value.workout); 
       } 
       reply(muscleGroups[0]); 
      }); 
     }); 
    } 
}; 


var addWorkout = { 
    handler: function(req, reply){ 

     var d = new Date(); 
     var cd = d.getDate() + "-" + (d.getMonth()+1) + "-" + d.getFullYear(); 

     // sets schema for workout 
     var payload = { 
      "personId": "personId", //to later be replaced with actual username 
      "date": cd, 
      "workout": [ 
       { 
       "exercise": req.query.exercise, 
       "musclegoup": req.query.musclegroup, 
       "sets": [ 
        { 
        "reps": req.query.reps, 
        "kg": req.query.kg 
        } 
       ] 
       } 
      ] 
     }; 

     // defines unique key for data 
     var key = payload.personId + payload.date; 
     console.log(key); 

     // adds payload to database 
     db.add(key, payload, function(error, results){ 
      if (error) { 
       console.log(error); 
       reply(error + "\n"); 
      } 
      console.log(results); 
      reply(payload); 
     }); 
    } 
}; 

这是我为index.js代码：

var Hapi = require('hapi'); 
var path = require('path'); 
var Joi = require('joi'); 
var rs = require('./lib/modules/routes.js'); 


var config= { }; 
var server = Hapi.createServer(process.env.PORT || 8080, config); 

server.route(rs); 

server.start(function(){ 
    console.log("Server started: " + server.info.uri); 
}); 

module.exports = server; 

Answer 1

您正在尝试他们之前使用landingPage，getWorkouts，getMusclegroup和addWorkout变量被定义。所以要解决这个问题，只需改变顺序，首先定义这些变量，然后创建路线：

var landingPage = { 
    ... 
}; 

var getWorkouts = { 
    ... 
}; 

var getMusclegroup = { 
    ... 
}; 

var addWorkout = { 
    ... 
}; 

module.exports = [ 
    {method: 'GET', path: '/static/{param*}', config: { handler: { directory: { path: 'static'}}}}, 
    {method: 'GET', path:'/', config: landingPage}, 
    {method: 'GET', path:'/workouts', config: getWorkouts}, 
    {method: 'GET', path:'/workouts/musclegroup', config: getMusclegroup}, 
    {method: 'POST', path:'/addworkout', config: addWorkout} 
];