NodeJs 自定义日志记录工具分装_Nodejs 日志记录工具

向右看齐 2022-12-22 08:44 243阅读 0赞

**一、编写一个简单的日志记录工具，封装代码如下：**

//log 日志操作封装
    var fs = require('fs');
    var path = require('path');
    var util = require('util');
    
    var now = new Date();
    var filePath = path.join(__dirname, '/log/');
    var file = filePath + util.format('%s%s%s.txt', now.getFullYear(), now.getMonth() + 1, now.getDate());
    
    //文件夹处理
    if (fs.existsSync(filePath) == false) {
        fs.mkdirSync(filePath);
    }
    
    //定义静态对象
    var log = {
        //写入文字
        write: (content, callback) => {
            var writeable = fs.createWriteStream(file, {
                flags: 'a+',
                defaultEncoding: 'utf8'
            });
            writeable.on('finish', () => {
                if (callback) callback();
            });
            writeable.on('error', err => {
                console.info('写入异常,' + err);
            });
            writeable.write(content);
            //结束写入
            writeable.end();
        },
        //写入一行
        writeLine: (content, callback) => {
            content += '\r\n';
            log.write(content, callback);
        },
        //测试写入
        debug: (content, callback) => {
            var now = new Date();
            content = now.toLocaleString() + '：' + content;
            log.writeLine(content, callback);
        }
    }
    
    module.exports = log;

## [Node js Http常用请求封装][Node js Http] ##

## [ 使用webpack打包nodejs 后台端环境|NodeJs 打包后台代码][webpack_nodejs _NodeJs] ##

## [Node.Js Stream（流）-（四）文件copy实例][Node.Js Stream_-_copy] ##

[Node js Http]: https://blog.csdn.net/u011127019/article/details/109725430
[webpack_nodejs _NodeJs]: https://blog.csdn.net/u011127019/article/details/109390634
[Node.Js Stream_-_copy]: https://blog.csdn.net/u011127019/article/details/52534612