流星HTTP.get错误处理
问题描述:
我想在一组使用期货异步的URL上执行HTTP.get。流星HTTP.get错误处理
流星版本: 0.8.3 平台: Windows Server 2012中
的代码是有点像这样:
var futures = _.map(test, function(url) {
var future = new Future();
var onComplete = future.resolver();
try{
// Make async http call
var httpGet = HTTP.get(url,{followRedirects: true},function(error, result) {
if(error)
{
apiLogger.error("%s is error",error);
onComplete(error, null);
}
else
{
if(result!=null){
//operations done here
onComplete(error, JSON.stringify(object1));
}
else {
apiLogger.error('%s - User encountered an error. URL not parsed: %s',user,url);
onComplete(error, null);
}
}
});
}
catch(e)
{
apiLogger.error('%s - URsarsed: %s - %s',user,url,result.statusCode);
onComplete(error, null);
}
return future;
});
我现在面临的问题是不正确的错误处理。
我收到一些网址,出现以下错误:
I20140904-17:57:38.609(-4)? Exception while invoking method 'parallelAsyncJob' E
rror: failed [404] <html><head><title>Apache Tomcat/7.0.12 - Error report</title
><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color
:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;ba
ckground-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;
color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,A
rial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial
,sans-serif;color:white;background-colo...
I20140904-17:57:38.617(-4)? at packages/underscore/underscore.js:255
I20140904-17:57:38.619(-4)? at Array.map (native)
I20140904-17:57:38.621(-4)? at Function._.map._.collect (packages/underscore
/underscore.js:123)
I20140904-17:57:38.623(-4)? at Function._.invoke (packages/underscore/unders
core.js:254)
I20140904-17:57:38.626(-4)? at Meteor.methods.parallelAsyncJob (app/server/m
ethods.js:1:9355)
I20140904-17:57:38.628(-4)? at maybeAuditArgumentChecks (packages/livedata/l
ivedata_server.js:1488)
I20140904-17:57:38.631(-4)? at packages/livedata/livedata_server.js:650
I20140904-17:57:38.632(-4)? at _.extend.withValue (packages/meteor/dynamics_
nodejs.js:37)
I20140904-17:57:38.635(-4)? at packages/livedata/livedata_server.js:649
I20140904-17:57:38.644(-4)? at _.extend.withValue (packages/meteor/dynamics_
nodejs.js:37)
I20140904-17:57:38.646(-4)? - - - - -
I20140904-17:57:38.648(-4)? at makeErrorByStatus (packages/http/httpcall_com
mon.js:12)
I20140904-17:57:38.650(-4)? at Request._callback (packages/http/httpcall_ser
ver.js:99)
I20140904-17:57:38.652(-4)? at Request.self.callback (C:\Users\Administrator
\AppData\Local\.meteor\tools\edf8981bb6\lib\node_modules\request\request.js:122:
22)
I20140904-17:57:38.655(-4)? at Request.EventEmitter.emit (events.js:98:17)
I20140904-17:57:38.657(-4)? at Request.<anonymous> (C:\Users\Administrator\A
ppData\Local\.meteor\tools\edf8981bb6\lib\node_modules\request\request.js:888:14
)
I20140904-17:57:38.660(-4)? at Request.EventEmitter.emit (events.js:117:20)
I20140904-17:57:38.662(-4)? at IncomingMessage.<anonymous> (C:\Users\Adminis
trator\AppData\Local\.meteor\tools\edf8981bb6\lib\node_modules\request\request.j
s:839:12)
I20140904-17:57:38.665(-4)? at IncomingMessage.EventEmitter.emit (events.js:
117:20)
I20140904-17:57:38.668(-4)? at _stream_readable.js:920:16
I20140904-17:57:38.669(-4)? at process._tickCallback (node.js:415:13)
难道我做错了什么?或者它是一些GET问题?
更新:
我使用期货,因为最终的操作只能让所有的URL之后进行。
有趣的是,我可以通过浏览器打开URL,甚至POSTMAN并获得200状态。但流星得到的是404。
答
根据你的错误信息,你会得到一个404错误代码;部分网址无效。而你自己说,它只发生在某些网址上。
为什么你的代码如此复杂,以及所有这些未来? HTTP.get()
itself offers an asyncCallback
,你已经在你的代码中使用了内联回调,那么为什么不去掉所有的期货?
_.map(test, function(url) {
try {
// Make async http call
HTTP.get(url, {followRedirects: true}, function(error, result) {
if (error) {
if (result.statusCode == 404)
apiLogger.error('Error 404, URL not found: %s', url);
else
apiLogger.error('Error %s from %s for user %s',
result.statusCode, url, user);
return false;
} else {
if (result != null) {
// operations done here
} else {
apiLogger.error('Empty or invalid result returned from %s for user %s',
url, user);
}
return false;
}
});
} catch (error) {
return false;
}
});
我正在使用期货,因为最终操作只能在获取所有网址后才能执行。我只在请求状态码不是200时遇到上述控制台错误。 我需要知道的是在使用期货时处理错误(因为我认为问题与此有关) – tgarg 2014-09-05 13:51:59