Introduction
Use express as server and provide callable api
module used
express (nodejs framework)
mongoose (easy to interact with mongod)
Directory Structure
--models // database models
----test.js
--routes // request routes
----users.js
--schemas // database schema
----test.js
--server.js // server entry
schemas/test.js file
var mongoose = require('mongoose'); // import datapath module
var testSchema = new mongoose.Schema({ // define the storage data structure
aaa: String,
bbb: Number,
ccc: {
body: String,
date: {
type: Date,
default: Date.now()
}
},
ddd: Boolean
});
testSchema.statics = { // public methods of testSchema
fetch: function(cb) { // find everything in ascending order of bbb
return this.find({}).sort('bbb').exec(cb);
},
findById: function(id, cb) { // Find the specified content by _id
return this.findOne({_id:id}).exec(cb);
}
};
module.exports = testSchema; // export the module
models/test.js file
var mongoose = require('mongoose'); // import database module
var testSchema = require('../schemas/test'); // import defined data schema
var testdb = mongoose.model('testdb',testSchema); // create data module
module.exports = testdb; // export data module
routes/test.js file
var express = require('express'); // import the express module
var router = express.Router(); // Get a router instance
var Mongodb = require('../models/test'); // import data module
router.get('/find', function(req, res){ // Find all data routes /api/find
Mongodb.fetch(function(err, objs){
if (err) {
res.json({
"flag" : "find",
"error" : err
});
} else {
res.json({
"objs" : objs
});
}
});
});
router.get('/add',function(req, res){ // route to add data /api/add?aaa=123&bbb=321
var aaa = req.query.aaa;
var bbb = req.query.bbb;
var test = new Mongodb ({
aaa : "aaa",
bbb : 123,
ddd : true
});
test.save(function(err){
if (err) {
res.json({
"flag" : "save",
"error": err
});
} else {
res.json({
"flag" : "save"
});
}
});
});
module.exports = router; // export the module
server.js file
var express = require('express'); // import the express module
var port = process.env.PORT || 9527; // Modify the default port number to 9527
var mongoose = require('mongoose'); // import database module
var server = express(); // create a service object
var routes = require('./server/routes/test'); // import routing module
mongoose.connect('mongodb://localhost/testdb'); // connect to the database
server.use('/api',routes); // set routes
server.listen(port); // listen port number
console.log("start server! "+port);
After writing according to the above content, you can start and test
@root$:mongod // start the database
@root$:node server.js // start the service project
Add data to server: http://localhost:9527/api/add?aaa=123&bbb=321
Get data from server: http://localhost:9527/api/find