log4js 记录不同类型的日志
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本文目录结构
当前使用的log4js版本的 3.0.5 , 1.X 版本不能这么写
写配置 log_config.js
let log4js = require('log4js');
let path = require('path');
let fs = require('fs');
let basePath = path.join(__dirname, '/logs/');
let defaultPath = path.join(basePath, '/default_database/');
let writeDbPath = path.join(basePath, '/write_database/');
let readDbPath = path.join(basePath, '/read_database/');
let confirmPath = function (pathStr) {
console.log("pathStr",pathStr);
if (!fs.existsSync(pathStr)) {
fs.mkdirSync(pathStr);
console.log('createPath: ' + pathStr);
}
};
//创建log的根目录'logs'
if (basePath) {
confirmPath(basePath);
//根据不同的logType创建不同的文件目录
confirmPath(defaultPath);
confirmPath(writeDbPath);
confirmPath(readDbPath);
}
log4js.configure({
appenders: {
out: {type: 'console'},
default: {
type: 'dateFile',
filename: defaultPath,
"pattern": "yyyy-MM-dd-hh.log",
alwaysIncludePattern: true
},
write_db: {
type: 'dateFile',
filename: writeDbPath,
"pattern": "yyyy-MM-dd-hh.log",
alwaysIncludePattern: true
},
read_db: {
type: 'dateFile',
filename: readDbPath,
"pattern": "yyyy-MM-dd-hh.log",
alwaysIncludePattern: true
}
},
categories: {
default: {
appenders: ['default'],
level: 'info'
},
write_db: {
appenders: ['write_db'],
level: 'info'
},
read_db: {
appenders: ['read_db'],
level: 'info'
}
},
replaceConsole: true //是否替换console.log
});
module.exports = log4js;
写应用index.js，在这里演示怎么使用
let log4js = require('./log_config');
let defaultLog = log4js.getLogger('default') ; //此处使用category的值
let writeLog = log4js.getLogger('write_db') ; //此处使用category的值
let readLog = log4js.getLogger('read_db') ; //此处使用category的值
defaultLog.info("default");
writeLog.info("000");
readLog.info("111");
这就 OK 了
