在看react-native教程的时候,遇到要在手机端调试,需要api服务器,但是由于Node.js自己就作为服务器,没有apache怎么解决这个问题,用apache和nginx也可以解决,但是有点复杂,我们就使用node已有的模块解决这个问题.
//服务器端的代码
var express = require('express');var app = express();
// set up handlebars view engine
var handlebars = require('express3-handlebars')
.create({ defaultLayout:'main' });
app.engine('handlebars', handlebars.engine);
app.set('view engine', 'handlebars');
app.set('port', process.env.PORT || 3000);
app.use(express.static(__dirname + '/public'));
var fortuneCookies = [
"Conquer your fears or they will conquer you.",
"Rivers need springs.",
"Do not fear what you don't know.",
"You will have a pleasant surprise.",
"Whenever possible, keep it simple.",
];
app.get('/', function(req, res) {
res.render('home');
});
app.get('/about', function(req,res){
var randomFortune =
fortuneCookies[Math.floor(Math.random() * fortuneCookies.length)];
res.render('about', { fortune: randomFortune });
});
// 404 catch-all handler (middleware)
app.use(function(req, res, next){
res.status(404);
res.render('404');
});
// 500 error handler (middleware)
app.use(function(err, req, res, next){
console.error(err.stack);
res.status(500);
res.render('500');
});
app.listen(app.get('port'), function(){
console.log( 'Express started on http://localhost:' +
app.get('port') + '; press Ctrl-C to terminate.' );
});
上面这段代码在127.0.0.1:3000端口启动一个本地服务器,但是在手机端是不能访问的.
我们再启动另一个node.js服务器来解决这个问题.
//proxy.js
var http = require('http'),
httpProxy = require('http-proxy'); //引入这个模块// 新建一个代理 Proxy Server 对象
var proxy = httpProxy.createProxyServer({});
// 捕获异常
proxy.on('error', function (err, req, res) {
res.writeHead(500, {
'Content-Type': 'text/plain'
});
res.end('Something went wrong. And we are reporting a custom error message.');
});
// 另外新建一个 HTTP 80 端口的服务器,也就是常规 Node 创建 HTTP 服务器的方法。
// 在每次请求中,调用 proxy.web(req, res config) 方法进行请求分发
var server = require('http').createServer(function(req, res) {
// 在这里可以自定义你的路由分发
var host = req.headers.host, ip = req.headers['x-forwarded-for'] || req.connection.remoteAddress;
console.log("client ip:" + ip + ", host:" + host);
switch(host){ //意思是监听下面的ip地址,如果匹配就转到
//127.0.0.1:3000地址
case '192.168.0.101:8080': //监听这个地址









