Question

我有一个节点应用程序，其中使用Winstonjs作为记录器。在我的记录器中，我有一个特定的部分用于记录如下异常：

<div class="page-header header-filter">
    <div class="container">
        <div class="row">
            <div class="col-md-8 ml-auto mr-auto">
                <div class="brand">
                    <h1> Some smart text </h1>
                    <h3 class="title"> Start the Development With A Badass Bootstrap 4 UI Kit inspired by Material Design. </h3>
                </div>
            </div>
        </div>
    </div>  
</div>

.page-header {
height: 100vh;
color: #fff;
background-position: 50%;
background-size: cover;
background-image: url(../img/ggg.jpg);
display: flex;
align-items: center;
}

.brand {
    text-align: center;
}

.header-filter::after {
    position: absolute;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: block;
    left: 0;
    top: 0;
    content: "";
}

.header-filter::after {
    background: rgba(132,13,121,.88);
    background: linear-gradient(45deg,rgba(132,13,121,.88),rgba(208,44,180,.31));
    background: -webkit-linear-gradient(135deg,rgba(132,13,121,.88),rgba(208,44,180,.31));
}

因此，任何异常都应同时记录在const myFormat = winston.format.printf(info => { return `${info.timestamp} ${info.level}: ${info.message}`; }); const logger = winston.createLogger({ level: "debug", format: winston.format.combine(winston.format.timestamp(), myFormat), // winston.format.json(), transports: [ new winston.transports.File({filename: "logs/error.log", level: 'error'}), new winston.transports.File({filename: 'logs/combined.log'}), ], exceptionHandlers: [ new winston.transports.File({ filename: 'logs/exceptions.log' }), new winston.transports.File({ filename: 'logs/combined.log' }) ], exitOnError: false });和logs/combined.log中。

运行程序时，我有时有时会在我的STDOUT中收到以下错误，该错误来自Sequelizejs，我曾用它写入我的MySQL数据库。

logs/exceptions.log

此错误仅在stdout中显示（手动运行程序时），在Unhandled rejection TimeoutError: ResourceRequest timed out at ResourceRequest._fireTimeout (/root/mmjs/node_modules/generic-pool/lib/ResourceRequest.js:62:17) at Timeout.bound (/root/mmjs/node_modules/generic-pool/lib/ResourceRequest.js:8:15) at ontimeout (timers.js:424:11) at tryOnTimeout (timers.js:288:5) at listOnTimeout (timers.js:251:5) at Timer.processTimers (timers.js:211:10)或combined.log中均不显示。可能是因为这是错误而不是例外。我不确定如何正确地记录它。

（我想我可以wrap my whole code in a try/catch，但是我想还有更好的方法.. :-)）

有人可以帮我记录下此错误和类似的未捕获错误吗？

Answer 1

过程是指节点。尝试在index.js中添加unhandledRejection检查，或使用proper winston exception handling：

import tkinter as tk


def move_label(ndx=[0]):

    # the 3 next toggle the column value
    rowcol = [(1, 1), (1, 0)]
    x, y = rowcol[ndx[0]]
    ndx[0] = (ndx[0] + 1) % 2

    label_at_1_0.grid(row=x, column=y)


root = tk.Tk()
frame = tk.Frame(root, bg="black")
frame.pack()

label_at_0_0 = tk.Label(frame, text="label_at_0_0")
label_at_0_0.grid(row=0, column=0)

label_at_0_1 = tk.Label(frame, text="not label_at_0_1")
label_at_0_1.grid(row=0, column=1)

label_at_1_0 = tk.Label(frame, text="label_at_1_0")
label_at_1_0.grid(row=1, column=0)

btn_to_move_label = tk.Button(frame, text='move label', command=move_label)
btn_to_move_label.grid(row=1, column=3)

root.mainloop()

但是，在package.json文件中查找与index.js文件相同的目录。在依赖性部分中查找节点池，并将其版本更改为“ node-pool”：“ ^ 3.4.2”，因为您描述的问题很可能已在3.1.8版本中解决。

如何在Winstonjs记录器中记录未处理的TimeoutError？

1 个答案: