http 请求日志记录中间件,详细请参考:(https://github.com/expressjs/morgan) or (http://npm.taobao.org/package/morgan)
npm install express morgan
注:执行上面命名时应先安装express,详细参考:node快速构建express项目
var express = require('express');
var app = express();
var morgan = require('morgan');
app.use(morgan('short'));
app.use(function(req, res, next){
res.send('ok');
});
app.listen(3000);
node bin\www 运行程序,并在浏览器里访问 http://127.0.0.1:3000
控制台即可看到打印的日志如下:
::ffff:127.0.0.1 - GET / HTTP/1.1 304 - - 3.019 ms
::ffff:127.0.0.1 - GET /favicon.ico HTTP/1.1 200 2 - 0.984 ms
morgan支持stream配置项,可以通过它来实现将日志写入文件便于查看。示例如下:
var express = require('express');
var app = express();
var morgan = require('morgan');
var fs = require('fs');
var path = require('path');
var accessLogStream = fs.createWriteStream(path.join(__dirname, 'access.log'), {flags: 'a'});
app.use(morgan('short', {stream: accessLogStream}));
app.use(function(req, res, next){
res.send('ok');
});
app.listen(3000);
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var FileStreamRotator = require('file-stream-rotator')
var path = require('path')
var fs=require('fs');
var logDirectory = path.join(__dirname, 'logs')
var index = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// ensure log directory exists
fs.existsSync(logDirectory) || fs.mkdirSync(logDirectory)
// create a rotating write stream
var accessLogfile = FileStreamRotator.getStream({
date_format: 'YYYY-MM-DD',
filename: path.join(logDirectory, 'access-%DATE%.log'),
frequency: 'daily',
verbose: false
})
var errorLogfile = FileStreamRotator.getStream({
date_format: 'YYYY-MM-DD',
filename: path.join(logDirectory, 'error-%DATE%.log'),
frequency: 'daily',
verbose: false
})
// 对Date的扩展,将 Date 转化为指定格式的String
// 月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符,
// 年(y)可以用 1-4 个占位符,毫秒(S)只能用 1 个占位符(是 1-3 位的数字)
// 例子:
// (new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423
// (new Date()).Format("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18
Date.prototype.Format = function (fmt) { //author: meizz
var o = {
"M+": this.getMonth() + 1, //月份
"d+": this.getDate(), //日
"h+": this.getHours(), //小时
"m+": this.getMinutes(), //分
"s+": this.getSeconds(), //秒
"q+": Math.floor((this.getMonth() + 3) / 3), //季度
"S": this.getMilliseconds() //毫秒
};
if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
for (var k in o)
if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
return fmt;
}
// 自定义token
logger.token('from', function(req, res){
return JSON.stringify(req.query) || '-';
});
logger.token('time', function(req, res){
return new Date().Format("yyyy-MM-dd hh:mm:ss");
});
logger.token('nextROw', function(req, res){
return "\r\n";
});
// 自定义format,其中包含自定义的token
logger.format('joke', '[joke] :time :remote-addr :remote-user :method :url :from :status :referrer :response-time ms :user-agent :nextROw');
//跳过不需要记录的请求
function skip (req) {
return (req.url).indexOf('stylesheets') != -1
}
// 使用自定义的format
app.use(logger('joke'));
app.use(logger('joke',{skip: skip, stream: accessLogfile })); //打印到日志文件中
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', index);
app.use('/users', users);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handler
app.use(function(err, req, res, next) {
var now = new Date();
var time = now.getFullYear() + '-' + now.getMonth() + '-' + now.getDate() + ' '
+ now.getHours() + ':' + now.getMinutes() + ':' + now.getSeconds();
var meta = '[' + time + '] '+req.method+' ' + req.url + '\r\n';
errorLogfile.write(meta + err.stack + '\r\n\r\n\r\n');
next();
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
http://m.blog.csdn.net/sunq1982/article/details/77504056
https://www.cnblogs.com/chyingp/p/node-learning-guide-express-morgan.html
https://github.com/expressjs/morgan
http://npm.taobao.org/package/morgan
https://www.cnblogs.com/yanhua2017/p/6385494.html