Javascript ReferenceError:未使用express在node.js中定义

我按照本教程从Android为MongoDB编写了一些坐标：

当我尝试从应用程序连接时，服务器中出现以下错误

ReferenceError: coord is not defined
at Object.handle (/root/gpsavior/routes/routes.js:12:5)
at next_layer (/root/gpsavior/node_modules/express/lib/router/route.js:103:13)
at Route.dispatch (/root/gpsavior/node_modules/express/lib/router/route.js:107:5)
at c (/root/gpsavior/node_modules/express/lib/router/index.js:195:24)
at Function.proto.process_params (/root/gpsavior/node_modules/express/lib/router/index.js:251:12)
at next (/root/gpsavior/node_modules/express/lib/router/index.js:189:19)
at next_layer (/root/gpsavior/node_modules/express/lib/router/route.js:77:14)
    at next_layer (/root/gpsavior/node_modules/express/lib/router/route.js:81:14)
    at Route.dispatch (/root/gpsavior/node_modules/express/lib/router/route.js:107:5)
    at c (/root/gpsavior/node_modules/express/lib/router/index.js:195:24)
POST /coord 500 1ms - 842b

这是我的routes.js（我只是用get来测试它，它可以正常工作）

---

在我看来，您缺少了一个

require（'coord.js'）在您的
routes.js中

module.exports = function(app) {
app.get('/', function(req, res) {
res.end("gpsavior");
});
app.get('/coord', function(req, res) {
res.end("olakase");
});
app.post('/coord',function(req,res){
var num = req.body.num
var lat = req.body.lat;
var longi = req.body.longi;
coord.coord(num,lat,longi,function (found) { <---This one is line 12
  console.log(found);
  res.json(found);
});
});

var mongoose = require('mongoose');
var user = require('config/models');
exports.coord = function(num,lat,longi,callback) {
var num = num;
var lat = lat;
var longi =longi;
var coord = new user({
num: num,
lat: lat,
longi: longi });
coord.save();
callback({'response':"OK",'res':true});
}