blocks|key|373720|text|我们可以使用console-stamp向现有控制台添加时间戳和日志级别：require('console-stamp')(console,+'[yyyy-mm-dd+HH:MM:ss.l]')|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|373721|详情请参阅https://github.com/starak/node-console-stamp|373722|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/starak/node-console-stamp^0|10|1O|0|5|18|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@]|D|@$9|T|A|U|1|V]]|E|$]]|$1|H|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

we could use console-stamp to add timestamp and log level to the existing console: <code>require('console-stamp')(console, '[yyyy-mm-dd HH:MM:ss.l]')</code>

See <a href="https://github.com/starak/node-console-stamp" rel="nofollow noreferrer">https://github.com/starak/node-console-stamp</a> for the details

blocks|key|373755|text|有时，默认的时间戳格式可能对您不方便。你可以用你的实现覆盖它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|373756|而不是|373757|var+winston+=+require('winston');
var+logger+=+new+(winston.Logger)({
transports:+[
++new+(winston.transports.Console)({'timestamp':true})
]
});|code-block|syntax|javascript|373758|你可以写|373759|var+winston+=+require('winston');
var+logger+=+new+(winston.Logger)({
transports:+[
++new+(winston.transports.Console)({
+++++'timestamp':+function()+{
++++++++return+<write+your+custom+formatted+date+here>;
+++++}
++})
]
});|373760|详情请参阅https://github.com/winstonjs/winston#custom-log-format|offset|length|373761|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/winstonjs/winston#custom-log-format^0|0|0|0|0|0|5|1I|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@$O|14|P|15|1|16]]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

Sometimes default timestamp format can be not convenient for you.
You can override it with your implementation.

Instead of 

<pre><code>var winston = require('winston');
var logger = new (winston.Logger)({
transports: [
 new (winston.transports.Console)({'timestamp':true})
]
});
</code></pre>

you can write

<pre><code>var winston = require('winston');
var logger = new (winston.Logger)({
transports: [
 new (winston.transports.Console)({
 'timestamp': function() {
 return &lt;write your custom formatted date here&gt;;
 }
 })
]
});
</code></pre>

See <a href="https://github.com/winstonjs/winston#custom-log-format" rel="nofollow">https://github.com/winstonjs/winston#custom-log-format</a> for the details

blocks|key|373857|text|上面的答案对我不起作用。如果您正在尝试使用最新版本的Winston+-+3.0.0-rc1将时间戳添加到日志中，则可以使用以下方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|373858|++++const+{transports,+createLogger,+format}+=+require('winston');

++++const+logger+=+createLogger({
++++++++format:+format.combine(
++++++++++++format.timestamp(),
++++++++++++format.json()
++++++++),
++++++++transports:+[
++++++++++++new+transports.Console(),
++++++++++++new+transports.File({filename:+'logs/error/error.log',+level:+'error'}),
++++++++++++new+transports.File({filename:+'logs/activity/activity.log',+level:'info'})
++++++++]
++++});|code-block|syntax|javascript|373859|我使用了'format.combine()‘。因为我所有的传输都需要时间戳，所以我在createLogger中添加了格式化选项，而不是在每个传输中。我在控制台和文件(activity.log)上的输出如下：|373860|{"message":"Connected+to+mongodb","level":"info","timestamp":"2018-02-01T22:35:27.758Z"}
{"message":"Connected+to+mongodb","level":"info","timestamp":"2018-02-01T22:35:27.758Z"}|373861|我们可以像往常一样在'format.combine()‘中将格式添加到这个时间戳中，使用：|373862|format.timestamp({format:'MM-YY-DD'})|373863|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Above answers did not work for me. In case you are trying to add timestamp to your logs using the latest version of Winston - 3.0.0-rc1, this worked like charm: 

<pre><code> const {transports, createLogger, format} = require('winston');

 const logger = createLogger({
 format: format.combine(
 format.timestamp(),
 format.json()
 ),
 transports: [
 new transports.Console(),
 new transports.File({filename: 'logs/error/error.log', level: 'error'}),
 new transports.File({filename: 'logs/activity/activity.log', level:'info'})
 ]
 });
</code></pre>

I used 'format.combine()'. Since I needed timestamp on all my transports, I added the formatting option within the createLogger, rather than inside each transport. My output on console and on file (activity.log) are as follows:

<pre><code>{"message":"Connected to mongodb","level":"info","timestamp":"2018-02-01T22:35:27.758Z"}
{"message":"Connected to mongodb","level":"info","timestamp":"2018-02-01T22:35:27.758Z"}
</code></pre>

We can add formatting to this timestamp in 'format.combine()' as usual using:

<pre><code>format.timestamp({format:'MM-YY-DD'})
</code></pre>

blocks|key|589615|text|我们也可以这样做|type|unstyled|depth|inlineStyleRanges|entityRanges|data|589616|var+winston+=+require('winston');
const+{+createLogger,+format,+transports+}+=+require('winston');
var+config+=+require('../configurations/envconfig.js');

var+loggerLevel+=+process.env.LOGGERLEVEL+%7C%7C++config.get('LOGGERLEVEL');

var+logger+=+winston.createLogger({
++format:+format.combine(
++++format.timestamp({
++++++format:+'YYYY-MM-DD+HH:mm:ss'
++++}),
++++format.printf(info+=>+`${info.timestamp}+${info.level}:+${info.message}`%2B(info.splat!==undefined?`${info.splat}`:"+"))
++),
++transports:+[
++++new+(winston.transports.Console)({+level:+loggerLevel+}),
++]
});
module.exports+=+logger;|code-block|syntax|javascript|589617|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

We can do like this also
<pre class="lang-js prettyprint-override"><code>var winston = require('winston');
const { createLogger, format, transports } = require('winston');
var config = require('../configurations/envconfig.js');

var loggerLevel = process.env.LOGGERLEVEL || config.get('LOGGERLEVEL');

var logger = winston.createLogger({
 format: format.combine(
 format.timestamp({
 format: 'YYYY-MM-DD HH:mm:ss'
 }),
 format.printf(info =&gt; `${info.timestamp} ${info.level}: ${info.message}`+(info.splat!==undefined?`${info.splat}`:&quot; &quot;))
 ),
 transports: [
 new (winston.transports.Console)({ level: loggerLevel }),
 ]
});
module.exports = logger;
</code></pre>

blocks|key|589667|text|另一种解决方案是将记录器封装到一个文件中，该文件导出一些函数，如logger.info()、logger.error()等，然后您只需传递一个额外的键，以便在每个消息日志中发送。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|589668|loggerService.js|589669|const+logger+=+winston.createLogger({+...+})

function+handleLog(message,+level)+{
++const+logData+=+{
++++timestamp:+Date.now(),
++++message,
++}

++return+logger[level](logData)
}

function+info(message)+{
++handleLog(message,+'info')
}

function+error(message)+{
++handleLog(message,+'error')
}

function+warn(message)+{
++handleLog(message,+'warn')
}

module.exports+=+{
++info,
++error,
++warn
}|code-block|syntax|javascript|589670|whatever-file.js|589671|const+logger+=+require('./services/loggerService')

logger.info('Hello+World!')|589672|your-log.log|589673|{"timestamp":"2019-08-21+06:42:27","message":"Hello+World!","level":"info"}|589674|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Another solution is wrapping the logger into a file that exports some functions like logger.info(), logger.error(), etc. then you just pass an extra key to be sent on every message log.

loggerService.js

<pre><code>const logger = winston.createLogger({ ... })

function handleLog(message, level) {
 const logData = {
 timestamp: Date.now(),
 message,
 }

 return logger[level](logData)
}

function info(message) {
 handleLog(message, 'info')
}

function error(message) {
 handleLog(message, 'error')
}

function warn(message) {
 handleLog(message, 'warn')
}

module.exports = {
 info,
 error,
 warn
}
</code></pre>

whatever-file.js

<pre><code>const logger = require('./services/loggerService')

logger.info('Hello World!')
</code></pre>

your-log.log

<pre><code>{"timestamp":"2019-08-21 06:42:27","message":"Hello World!","level":"info"}
</code></pre>

I want to add timestamp to logs. What is the best way to achieve this?

How can I add timestamp to logs using Node.js library Winston?

我想将时间戳添加到日志中。实现这一目标的最佳方法是什么？

问如何使用Node.js库Winston将时间戳添加到日志？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何使用Node.js库Winston将时间戳添加到日志？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何使用Node.js库Winston将时间戳添加到日志？
EN