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server.js
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server.js
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// server.js
// ExpressJS调用方式
var express = require('express');
// var phantomjs = require('phantom');
var app = express();
var path = process.cwd();
// 引入NodeJS的子进程模块
var child_process = require('child_process');
app.get('*', function(req, res){
// 部署到服务器的完整URL
var url = req.protocol + '://'+ req.hostname + req.originalUrl;
// 测试的url
// var url = 'https://www.baidu.com'
// 预渲染后的页面字符串容器
var content = '';
// 开启一个phantomjs子进程
var phantom = child_process.spawn('phantomjs', [path + '/spider.js', url]);
// 设置stdout字符编码
phantom.stdout.setEncoding('utf8');
// 监听phantomjs的stdout,并拼接起来
phantom.stdout.on('data', function(data){
content += data.toString();
});
// 监听子进程退出事件
phantom.on('exit', function(code){
console.log("content是:")
console.log(content)
switch (code){
case 1:
console.log('加载失败');
res.send('加载失败');
break;
case 2:
console.log('加载超时: '+ url);
res.send(content);
break;
default:
console.log('加载页面: '+ url);
res.send(content);
break;
}
});
});
app.listen(8081, function () {
console.log('Spider app listening on port 8081!');
console.log(path + '/spider.js')
});