在coffeescript中处理Http错误 [英] Handling Http erorrs in coffeescript

问题描述

p>代码：

  http.gethttp：// localhost：8080 / health 
 status = res.statusCode 
 value = if status == 200 then 1 else 0 
 console.log value 
 server.push_metric metricPrefix，value 
 res.on' error'，（） - > 
 colsone.logTomcat Disconected
  

错误：

  events.js：71 
 throw arguments [1]; //未处理的错误事件
 ^ 
错误：连接ECONNREFUSED 
 at errnoException（net.js：770：11）
在Object.afterConnect [as oncomplete] js：761：19）
  

解决方案

在单独的事件处理程序中主动侦听错误。现在，您正在为响应（ res ）附加事件处理程序，但它需要附加到请求对象本身。请参见文档。

  req = http.gethttp：// localhost：8080 / health，（res） - > 
 status = res.statusCode 
 value = if status == 200 then 1 else 0 
 console.log value 
 server.push_metric metricPrefix，value 
 
 req.on'error'， - > 
 console.logTomcat Disconected
  

此外， handler： colsone.log

Guys I am trying to handle a http request in coffeescript , but in case the server is down the app just dies with error below , and I cant find the right solution

Code :

 http.get "http://localhost:8080/health", (res) ->
        status =  res.statusCode
        value = if status == 200 then 1 else 0
        console.log value
        server.push_metric metricPrefix , value
        res.on 'error', () ->
          colsone.log "Tomcat Disconected"

error :

events.js:71
        throw arguments[1]; // Unhandled 'error' event
                       ^
Error: connect ECONNREFUSED
    at errnoException (net.js:770:11)
    at Object.afterConnect [as oncomplete] (net.js:761:19)

解决方案

I think you have to actively listen for the error in a separate event handler. Right now, you're attaching an event handler to the response (res), but it needs to be attached to the request object itself. See the docs.

req = http.get "http://localhost:8080/health", (res) ->
  status = res.statusCode
  value = if status == 200 then 1 else 0
  console.log value
  server.push_metric metricPrefix , value

req.on 'error', ->
  console.log "Tomcat Disconected"

Also, you have a typo in your current error handler: colsone.log

这篇关于在coffeescript中处理Http错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！