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所以我試圖用名爲html-pdf的NPM包打印PDF到客戶端，本地一切都很好用。我使用了一種方法來做到這一點，我使用Meteor.call來調用服務器方法，然後從pdf中獲取緩衝輸出並將其粘貼到一個集合中。我使用autosubscribe來聽取當前用戶ID的新PDF，然後使用一個包將PDF保存到瀏覽器。重要的代碼片段如下：部署時使用npm包的流星錯誤
客戶端/ helpers.js
Meteor.autosubscribe(function() {
PdfsCollection.find().observe({
added: function(item){
var blob = new Blob([item.pdf], {type: 'application/pdf'});
console.log('new pdf found');
saveAs(blob, 'test.pdf');
PdfsCollection.remove({_id: item._id});
}
});
});
客戶端/模板/報價/ quotes.js：
Template.QuotesEdit.events({
"click #pdf" : function(event, template) {
var html = Blaze.toHTML(Blaze.With(template.data, function() { return Template.QuotePrint; }));
Meteor.call('createPDF', html, Meteor.userId());
}
});
服務器/ pdf.js：
Meteor.methods({
createPDF: function(html, userId) {
var pdf = Meteor.npmRequire('html-pdf');
pdf.create(html).toBuffer(Meteor.bindEnvironment(function(err,buffer) {
PdfsCollection.insert({userId: userId, pdf: buffer});
}));
}
});
導致錯誤的部分是當我實際調用pdf.create時。有兩個錯誤，在服務器日誌中我得到這個：
[Wed Apr 08 2015 03:23:16 GMT+0000 (UTC)] WARNING events.js:72
throw er; // Unhandled 'error' event
^
[Wed Apr 08 2015 03:23:16 GMT+0000 (UTC)] WARNING Error: write EPIPE
at errnoException (net.js:905:11)
at Object.afterWrite (net.js:721:19)
[Wed Apr 08 2015 03:23:16 GMT+0000 (UTC)] ERROR Application crashed with code: 8
[Wed Apr 08 2015 03:23:16 GMT+0000 (UTC)] NOTICE Starting application on port 9000
[Wed Apr 08 2015 03:23:16 GMT+0000 (UTC)] INFO STATUS running -> starting
[Wed Apr 08 2015 03:23:16 GMT+0000 (UTC)] INFO STATUS starting -> running
，並在瀏覽器控制檯有這樣的：
GET https://ddp--3484-metcrm.meteor.com/sockjs/info?cb=qtrpq640d2 6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 w._start6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 (anonymous function)setTimeout (async)6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 n.delay6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 n.XHRLocalObject6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 X.doXhr6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 (anonymous function)setTimeout (async)6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 n.delay6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 X6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 q6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 T6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:34 a.extend._launchConnection6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:34 a.extend._retryNow6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:3 t.extend.withValue6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:3 n6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:3 e.bindEnvironmentsetTimeout (async)6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:3 t.extend.setTimeout6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:19 t.extend.retryLater6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:34 a.extend._retryLater6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:34 a.extend._lostConnection6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:34 a.extend._launchConnection.t.socket.onclose6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 r.dispatchEvent6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 (anonymous function)setTimeout (async)6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 n.delay6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 T._didClose6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 o._ir.onfinish6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 a.emit6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 X.doXhr.a.onfinish6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 a.emit6f6418a2bd63d77a57cb8a21c5b677d0f83c8d36.js:32 w._start.a.xhr.onreadystatechange
oLxjjRxydCC5AuDig:1 XMLHttpRequest cannot load https://ddp--3484-metcrm.meteor.com/sockjs/info?cb=qtrpq640d2. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://metcrm.meteor.com' is therefore not allowed access. The response had HTTP status code 503.
我現在已經絞盡腦汁3小時，試圖找到源這是在我的本地服務器上工作，但不在Meteor上。這裏的兩個重要的包： meteorhacks：NPM（在流星使用NPM包） pfafman：filesaver（爲另存爲功能，我使用）
請任何幫助表示讚賞！