This article mainly introduces examples of using the koa2 framework under nodejs6. The editor thinks it is quite good. Now I will share it with you and give it a reference. Let’s follow the editor and take a look.
koa2 uses ES7 syntax, such as async and await, so it needs to run after node7.6; but before node7.6, babel can also be used, so koa2 can run.
First install babel in the project, and several babel modules:
npm install babel babel-register babel-preset-env --save
Then introduce 'babel- in the entry file register' module
require('babel-register');
Then introduce the business code:
require('./server.js');
In the configuration .babelrc file:
{
"presets": [
["env", {
"targets": {
"node": true
}
}]
]
}Example:
app.js:
require('babel-register');
require('./servers/devserver');devserver.js:
var koa = require('koa');
var app = new koa();
const request = require('request');
let port = process.env.PORT || 8080;
console.log("set port:" + process.env.PORT + "; ip:" + process.env.IP);
app.use(async (ctx) => {
console.log(ctx.url);
if (ctx.url.indexOf('/aaa') > -1) {
ctx.response.set('content-type', 'text/javascript');
ctx.body = request.get('http://127.0.0.1/aa.bundle.js', function(err, response, body) {
console.log(body);
});
}
});
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