Express 继续获取并发布/socket.io/?EIO=3&;运输=投票及;t=
我在ExpressJS和NodeJS中的后端过去工作得很好。我刚刚意识到日志会破坏磁盘(后端仍然正常工作),因为当后端打开时,它会继续尝试:Express 继续获取并发布/socket.io/?EIO=3&;运输=投票及;t=,express,nginx,socket.io,Express,Nginx,Socket.io,我在ExpressJS和NodeJS中的后端过去工作得很好。我刚刚意识到日志会破坏磁盘(后端仍然正常工作),因为当后端打开时,它会继续尝试: kpi.js GET /socket.io/?EIO=3&transport=polling&t=NBiaEK6 index.js GET /socket.io/?EIO=3&transport=polling&t=NBiaEK6 index.js router.get * kpi.js POST /socket.io/?E
kpi.js GET /socket.io/?EIO=3&transport=polling&t=NBiaEK6
index.js GET /socket.io/?EIO=3&transport=polling&t=NBiaEK6
index.js router.get *
kpi.js POST /socket.io/?EIO=3&transport=polling&t=NBiaER6
index.js POST /socket.io/?EIO=3&transport=polling&t=NBiaER6
Error: Not Found
at /opt/funfun/app.js:99:13
at Layer.handle [as handle_request] (/opt/funfun/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/opt/funfun/node_modules/express/lib/router/index.js:317:13)
at /opt/funfun/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/opt/funfun/node_modules/express/lib/router/index.js:335:12)
at next (/opt/funfun/node_modules/express/lib/router/index.js:275:10)
at /opt/funfun/node_modules/express/lib/router/index.js:635:15
at next (/opt/funfun/node_modules/express/lib/router/index.js:260:14)
at /opt/funfun/routes/index.js:18:2
at Layer.handle [as handle_request] (/opt/funfun/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/opt/funfun/node_modules/express/lib/router/index.js:317:13)
at /opt/funfun/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/opt/funfun/node_modules/express/lib/router/index.js:335:12)
at next (/opt/funfun/node_modules/express/lib/router/index.js:275:10)
at Function.handle (/opt/funfun/node_modules/express/lib/router/index.js:174:3)
at router (/opt/funfun/node_modules/express/lib/router/index.js:47:12)
at Layer.handle [as handle_request] (/opt/funfun/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/opt/funfun/node_modules/express/lib/router/index.js:317:13)
at /opt/funfun/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/opt/funfun/node_modules/express/lib/router/index.js:335:12)
at next (/opt/funfun/node_modules/express/lib/router/index.js:275:10)
at /opt/funfun/node_modules/express/lib/router/index.js:635:15
kpi.js GET /socket.io/?EIO=3&transport=polling&t=NBiaF8A
index.js GET /socket.io/?EIO=3&transport=polling&t=NBiaF8A
index.js router.get *
kpi.js POST /socket.io/?EIO=3&transport=polling&t=NBiaFFz
index.js POST /socket.io/?EIO=3&transport=polling&t=NBiaFFz
Error: Not Found
at /opt/funfun/app.js:99:13
at Layer.handle [as handle_request] (/opt/funfun/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/opt/funfun/node_modules/express/lib/router/index.js:317:13)
at /opt/funfun/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/opt/funfun/node_modules/express/lib/router/index.js:335:12)
at next (/opt/funfun/node_modules/express/lib/router/index.js:275:10)
at /opt/funfun/node_modules/express/lib/router/index.js:635:15
at next (/opt/funfun/node_modules/express/lib/router/index.js:260:14)
at /opt/funfun/routes/index.js:18:2
at Layer.handle [as handle_request] (/opt/funfun/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/opt/funfun/node_modules/express/lib/router/index.js:317:13)
at /opt/funfun/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/opt/funfun/node_modules/express/lib/router/index.js:335:12)
at next (/opt/funfun/node_modules/express/lib/router/index.js:275:10)
at Function.handle (/opt/funfun/node_modules/express/lib/router/index.js:174:3)
at router (/opt/funfun/node_modules/express/lib/router/index.js:47:12)
at Layer.handle [as handle_request] (/opt/funfun/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/opt/funfun/node_modules/express/lib/router/index.js:317:13)
at /opt/funfun/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/opt/funfun/node_modules/express/lib/router/index.js:335:12)
at next (/opt/funfun/node_modules/express/lib/router/index.js:275:10)
at /opt/funfun/node_modules/express/lib/router/index.js:635:15
kpi.js GET…
和index.js GET…
是我打印的内容。下面是opt/funfun/app.js的代码:
// catch 404 and forward to error handler
app.use(function (req, res, next) {
var err = new Error('Not Found'); // line 99
err.status = 404;
next(err);
});
有人知道原因是什么吗?如果您有一个
socket.io
客户端试图连接到
您的后端,但您的后端未配置或安装socket.io
服务器
未正确配置为接受连接,您正在登录任何错误
错误处理程序
确保socket.io客户端和服务器配置正确。
请参阅有关如何设置客户端和服务器的说明
默认情况下,当连接失败时,客户端会不断尝试无限次重新连接,
通过设置
选项
例如,这将阻止客户端在10次尝试失败后轮询服务器
const socket = io(serverURL, { reconnectionAttempts: 10 });
另外,为了最小化日志的大小,当您在生产中时,不要记录整个错误对象
,
您可以更新错误处理程序,只记录相关的详细信息
// catch errors and forward to error handler
app.use(function (req, res, next) {
...
next(err);
});
//In the error handler
app.use(function (err, req, res, next) {
//log only relevant details
logger.info(err.message)
})
由于您正在将错误传递给下一个
参数,因此它将检测为错误,如果您没有任何错误处理程序,Express将使用其默认处理程序
如果将任何内容传递给next()函数(字符串“route”除外),Express会将当前请求视为错误,并将跳过所有剩余的非错误处理路由和中间件函数
如果将错误传递给next(),而不在自定义错误处理程序中处理,则将由内置错误处理程序处理;错误将与堆栈跟踪一起写入客户端。生产环境中不包括堆栈跟踪
发件人:
这可能是因为:
您没有错误处理程序中间件,而Express default错误处理程序正在记录所有错误堆栈跟踪
您有错误处理程序,但它正在记录所有错误堆栈跟踪
首先,确保您正在生产环境中运行,以便不会将错误堆栈跟踪发送到客户端
将环境变量NODE_ENV设置为production,以在生产模式下运行应用程序
如果要将数据(错误)传递到下一个中间件而不将其检测为错误,请将其存储在res.locals
中,阅读更多内容
app.use(函数(请求、恢复、下一步){
常量错误=新错误(“未找到”);
err.status=404;
res.locals.exception=err;
next();
});
//自定义错误处理程序
应用程序使用(功能(请求、恢复){
设err=res.locals.exception;
//如果需要,请在此处添加最小日志记录
如果(err.message==“未找到”){
返回res.status(404.send();
}否则{
返回res.status(500.send();
}
//或
返回res.status(err.status).send(err.message);
});
或者编写自己的实际自定义错误处理程序中间件(确保将其放在404错误处理程序之后)
app.use(函数(请求、恢复、下一步){
常量错误=新错误(“未找到”);
err.status=404;
下一个(错误);
});
//注意,第一个参数是错误
应用程序使用(功能(错误、请求、恢复){
//如果需要,请在此处添加最小日志记录
如果(err.message==“未找到”){
返回res.status(404.send();
}否则{
返回res.status(500.send();
}
//或
返回res.status(err.status).send(err.message);
});
//--或者如果您使用的是typescript--
//首先声明错误处理程序
常量errorHandler:ErrorRequestHandler=(err、req、res、next)=>{
//如果需要,请在此处添加最小日志记录
如果(err.message==“未找到”){
返回res.status(404.send();
}否则{
返回res.status(500.send();
}
//或
返回res.status(err.status).send(err.message);
};
//然后使用它
应用程序使用(errorHandler);
我一直在使用第一个选项(res.locals
),因为在Typescript上它不支持错误处理程序中间件。我只是想出来了,把它添加到例子中,从中找到了解决方案