I am trying to create a PDF from HTML text using PhantomJS (version 1.9.7). I've written a very simple script (made more complicated by error callbacks etc.)
phantom.onError = function(msg, trace) {
var msgStack = ['PHANTOM ERROR: ' + msg];
if (trace && trace.length) {
msgStack.push('TRACE:');
trace.forEach(function(t) {
msgStack.push(' -> ' + (t.file || t.sourceURL) + ': ' + t.line + (t.function ? ' (in function ' + t.function + ')' : ''));
});
}
system.stdout.write(msgStack.join('\n'));
phantom.exit(1);
};
var page = require('webpage').create();
page.viewportSize = { width: 800, height: 600 };
page.paperSize = { format: 'A4', orientation: 'portrait', margin: '1cm' };
page.onResourceRequested = function(requestData, networkRequest) {
console.log('Request (#' + requestData.id + '): ' + JSON.stringify(requestData));
};
page.onResourceReceived = function(response) {
console.log('Response (#' + response.id + ', stage "' + response.stage + '"): ' + JSON.stringify(response));
};
page.onResourceError = function(resourceError) {
console.log('Unable to load resource (#' + resourceError.id + 'URL:' + resourceError.url + ')');
console.log('Error code: ' + resourceError.errorCode + '. Description: ' + resourceError.errorString);
};
page.onError = function(msg, trace) {
var msgStack = ['ERROR: ' + msg];
if (trace && trace.length) {
msgStack.push('TRACE:');
trace.forEach(function(t) {
msgStack.push(' -> ' + t.file + ': ' + t.line + (t.function ? ' (in function "' + t.function + '")' : ''));
});
}
console.error(msgStack.join('\n'));
};
page.content = "<html><body><b>test</b><img src=\"http://www.google.co.uk/images/srpr/logo11w.png\" alt=\"\" border=\"0\" /></body></html>";
page.render('tmp.pdf');
setTimeout(function() {
phantom.exit();
}, 5000);
I set up the page, assign the simple HTML string to the content property and render it to a PDF.
This script doesn't produce any output.
I've narrowed the problem down to the <img> element, when that is removed a PDF is generated as expected. I can see from the callback functions that the image is requested, a response is received, and there are no errors reported. I've tried rendering to a PNG which also yields no output.
I've explored the possibility of this being a proxy issue, however the raserize.js example works without any problems.
You have to call render when the page is fully loaded. Remember that loading a page via page.open or page.content is always async.
Change your code to this
page.content = "<html><body><b>test</b><img src=\"http://www.google.co.uk/images/srpr/logo11w.png\" alt=\"\" border=\"0\" /></body></html>";
setTimeout(function() {
page.render('tmp.pdf');
phantom.exit();
}, 5000);
Related
I have problems capturing and loading the webpage:
https://myaccount.nytimes.com/auth/login
The username and password fields as well as the submit button are missing. What could be the reason? Thanks
As you can see the code listed below waits for each and all the resources to be loaded, one by one.
I did not write the code, however it is excellent and tested by many. The original can be found here:
https://gist.github.com/cjoudrey/1341747
(ALL the credits to the guy who wrote it.)
var resourceWait = 3000,
maxRenderWait = 30000,
url = 'https://myaccount.nytimes.com/auth/login'; //'https://twitter.com/#!/nodejs';
var page = require('webpage').create(),
count = 0,
forcedRenderTimeout,
renderTimeout;
page.viewportSize = { width: 1280, height : 1024 };
function doRender() {
page.render('twitter.png');
phantom.exit();
}
page.onResourceRequested = function (req) {
count += 1;
console.log('> ' + req.id + ' - ' + req.url);
clearTimeout(renderTimeout);
};
page.onResourceReceived = function (res) {
if (!res.stage || res.stage === 'end') {
count -= 1;
console.log(res.id + ' ' + res.status + ' - ' + res.url);
if (count === 0) {
renderTimeout = setTimeout(doRender, resourceWait);
}
}
};
page.open(url, function (status) {
if (status !== "success") {
console.log('Unable to load url');
phantom.exit();
} else {
forcedRenderTimeout = setTimeout(function () {
console.log(count);
doRender();
}, maxRenderWait);
}
});
I have multiple windows that 'require' livebar so that the entire bar persists over all windows. However, whenever the 'change' function is called, it works and logs, however my $.livebar_datalbl.text fails with the following error: "undefined is not an object (evaluating '$.livebar_datalbl.text = 'State: ' + e.description + ' (' + e.state + ')'')"
Am I structuring the code incorrectly or missing something?
index.js
(function constructor() {
audioPlayer = Ti.Media.createAudioPlayer({
url: 'https://allthingsaudio.wikispaces.com/file/view/Shuffle%20for%20K.M.mp3/139190697/Shuffle%20for%20K.M.mp3',
allowBackground: true
});
audioPlayer.addEventListener('progress', function(e) {
Ti.API.info('Time Played: ' + Math.round(e.progress) + ' milliseconds');
});
audioPlayer.addEventListener('change', function(e) {
$.livebar_datalbl.text = 'State: ' + e.description + ' (' + e.state + ')';
Ti.API.info('State: ' + e.description + ' (' + e.state + ')');
});
window = Alloy.createController('listen').getView();
window.open();
})();
livebar.xml
<Alloy>
<View class="livebar">
<View class="livebar_livelblcontainer">
<Label class="livebar_livelbl">LIVE</Label>
</View>
<Label class="livebar_datalbl" id="livebar_datalbl">HELLO WORLD</Label>
<ImageView id="livebar_playpausebtn" class="livebar_playpausebtn"/>
</View>
</Alloy>
livebar.js
$.livebar_playpausebtn.addEventListener('click', function(event) {
if (audioPlayer.playing || audioPlayer.paused) {
audioPlayer.stop();
if (Ti.Platform.name === 'android')
{
audioPlayer.release();
}
} else {
audioPlayer.start();
}
});
audioPlayer.addEventListener('progress', function(e) {
Ti.API.info('Time Played: ' + Math.round(e.progress) + ' milliseconds');
});
audioPlayer.addEventListener('change', function(e) {
$.livebar_datalbl.text = 'State: ' + e.description + ' (' + e.state + ')';
Ti.API.info('State: ' + e.description + ' (' + e.state + ')');
});
The audioPlayer.addEventListener event will only listen to events in the controller that you have created the audioPlayer in, in this case index.js. In your example the audioPlayer.addEventListener events in livebar.js have no effect as there is no audioPlayer to add event to.
If you would like to have the audioplayer in index.js and then have the livebar be updated and still keep the livebar in its own view+controller you will need to fire events across the controllers. To do this you can make use of Ti.App.fireEvent
You can read more here - Search for the "Application-Level Events" Section
http://docs.appcelerator.com/platform/latest/#!/guide/Event_Handling
You could do something like below.
Remember to be careful with App wide event listeners, you should always remove
those when you are done with them via the function below
Ti.App.removeEventListener("eventlistenername", eventfunctionname);
index.js
(function constructor() {
audioPlayer = Ti.Media.createAudioPlayer({
url: 'https://allthingsaudio.wikispaces.com/file/view/Shuffle%20for%20K.M.mp3/139190697/Shuffle%20for%20K.M.mp3',
allowBackground: true
});
audioPlayer.addEventListener('progress', function(e) {
Ti.API.info('Time Played: ' + Math.round(e.progress) + ' milliseconds');
});
audioPlayer.addEventListener('change', function(e) {
// set livebareText
var livebareText = 'State: ' + e.description + ' (' + e.state + ')';
// fire app wide event
Ti.App.fireEvent("app:updateLivebar",livebareText);
Ti.API.info('State: ' + e.description + ' (' + e.state + ')');
});
window = Alloy.createController('listen').getView();
window.open();
})();
livebar.js
$.livebar_playpausebtn.addEventListener('click', function(event) {
if (audioPlayer.playing || audioPlayer.paused) {
audioPlayer.stop();
if (Ti.Platform.name === 'android')
{
audioPlayer.release();
}
} else {
audioPlayer.start();
}
});
// Add App eventlistener to listen for updateSingleProgessBar
Ti.App.addEventListener("app:updateLivebar", updateLivebar);
function updateLivebar(livebarText){
$.livebar_datalbl.text = livebarText;
Ti.API.info('State: ' + e.description + ' (' + e.state + ')');
}
I am loading the fine uploader in this manner:
var uploader = new qq.FineUploaderBasic({
button: $("#docAddHref"),
request: {
endpoint: 'server/handleUploads'
},
validation: {
allowedExtensions: ['jpeg', 'jpg', 'gif', 'png'],
sizeLimit: 204800 // 200 kB = 200 * 1024 bytes
},
callbacks: {
onSubmit: function (id, fileName) {
$messages.append('<div id="file-' + id + '" class="alert" style="margin: 20px 0 0"></div>');
},
onUpload: function (id, fileName) {
$('#file-' + id).addClass('alert-info')
.html('<img src="client/loading.gif" alt="Initializing. Please hold."> ' +
'Initializing ' +
'“' + fileName + '”');
},
onProgress: function (id, fileName, loaded, total) {
if (loaded < total) {
progress = Math.round(loaded / total * 100) + '% of ' + Math.round(total / 1024) + ' kB';
$('#file-' + id).removeClass('alert-info')
.html('<img src="client/loading.gif" alt="In progress. Please hold."> ' +
'Uploading ' +
'“' + fileName + '” ' +
progress);
} else {
$('#file-' + id).addClass('alert-info')
.html('<img src="client/loading.gif" alt="Saving. Please hold."> ' +
'Saving ' +
'“' + fileName + '”');
}
},
onComplete: function (id, fileName, responseJSON) {
if (responseJSON.success) {
$('#file-' + id).removeClass('alert-info')
.addClass('alert-success')
.html('<i class="icon-ok"></i> ' +
'Successfully saved ' +
'“' + fileName + '”' +
'<br><img src="img/success.jpg" alt="' + fileName + '">');
} else {
$('#file-' + id).removeClass('alert-info')
.addClass('alert-error')
.html('<i class="icon-exclamation-sign"></i> ' +
'Error with ' +
'“' + fileName + '”: ' +
responseJSON.error);
}
},
onError: function (id, name, reason, xhr) {
$('#fubErrorAlert .message').text(reason);
$('#fubErrorAlert button').click(function () {
$('#fubErrorAlert').hide();
});
$('#fubErrorAlert').show();
}
}
});
console.log('uploader called');
uploader();
When the page loads I am getting this javascript error:
Cannot read property 'opacity' of undefined
I installed the FineUploader via Nuget Pacakage for ASP.NET
https://github.com/Widen/fine-uploader-server/tree/master/ASP.NET%20MVC%20C%23
Please advice!
Your button option is likely the problem. You should change it to:
button: $("#docAddHref")[0]
If you want to do things like pass in a jQuery object, you will need to download and use Fine Uploader's jQuery plugin. More info about the plugin at http://docs.fineuploader.com/integrating/jquery.html
In PhantomJS, webpage.open takes a callback with a status parameter that's set to 'success' or 'fail'. According to the docs, it wll be "'success' if no network errors occurred, otherwise 'fail'." Is there a way to see the underlying network error that caused the failure?
The url I'm trying to load works fine when I put it in my browser, and when I take a screenshot after getting the 'fail' message I see the page that I was on before I called webpage.open (so I can't just ignore the fail). I'm using Phantom for testing, so ideally I'd like a robust way of easily getting a helpful error messsage when webpage.open fails (or better yet have it never fail!)
Found this post which explains how to set up callbacks to get at the underlying reason for the failure: http://newspaint.wordpress.com/2013/04/25/getting-to-the-bottom-of-why-a-phantomjs-page-load-fails/
Based on the that page, you could print out errors as follows:
page.onResourceError = function(resourceError) {
console.error(resourceError.url + ': ' + resourceError.errorString);
};
The page goes on to show an example of detailed logging for phantoms
var system = require('system');
page.onResourceRequested = function (request) {
system.stderr.writeLine('= onResourceRequested()');
system.stderr.writeLine(' request: ' + JSON.stringify(request, undefined, 4));
};
page.onResourceReceived = function(response) {
system.stderr.writeLine('= onResourceReceived()' );
system.stderr.writeLine(' id: ' + response.id + ', stage: "' + response.stage + '", response: ' + JSON.stringify(response));
};
page.onLoadStarted = function() {
system.stderr.writeLine('= onLoadStarted()');
var currentUrl = page.evaluate(function() {
return window.location.href;
});
system.stderr.writeLine(' leaving url: ' + currentUrl);
};
page.onLoadFinished = function(status) {
system.stderr.writeLine('= onLoadFinished()');
system.stderr.writeLine(' status: ' + status);
};
page.onNavigationRequested = function(url, type, willNavigate, main) {
system.stderr.writeLine('= onNavigationRequested');
system.stderr.writeLine(' destination_url: ' + url);
system.stderr.writeLine(' type (cause): ' + type);
system.stderr.writeLine(' will navigate: ' + willNavigate);
system.stderr.writeLine(' from page\'s main frame: ' + main);
};
page.onResourceError = function(resourceError) {
system.stderr.writeLine('= onResourceError()');
system.stderr.writeLine(' - unable to load url: "' + resourceError.url + '"');
system.stderr.writeLine(' - error code: ' + resourceError.errorCode + ', description: ' + resourceError.errorString );
};
page.onError = function(msg, trace) {
system.stderr.writeLine('= onError()');
var msgStack = [' ERROR: ' + msg];
if (trace) {
msgStack.push(' TRACE:');
trace.forEach(function(t) {
msgStack.push(' -> ' + t.file + ': ' + t.line + (t.function ? ' (in function "' + t.function + '")' : ''));
});
}
system.stderr.writeLine(msgStack.join('\n'));
};
Can someone helps me with some example using haraka librairy?
We use Haraka as our application mail server. We have written a simple plugin which takes any incoming mail and post it to our application web server.
Here is the plugin script. Just save it to a file do the necessary name changes and add the path to Harakas config/plugins file.
var
fs = require('fs'),
query_string = require('querystring'),
logger = require('./logger'),
DROP_DIRECTORY_PATH = '/path/haraka/drop/',
RETRY_DIRECTORY_PATH = '/path/haraka/retry/',
HOST_NAME = 'this_haraka_servers_name';
exports.hook_queue = function (next, connection, params) {
'use strict';
function haraka_log(function_name_in, section_in, text_in) {
var log_text = '[HttpMail]';
log_text += ' [' + function_name_in + ']';
log_text += ' [' + section_in + ']';
log_text += ' ' + text_in;
logger.lognotice(log_text);
}//function haraka_log
function move_file(filename_in) {
fs.rename(DROP_DIRECTORY_PATH + filename_in, RETRY_DIRECTORY_PATH + filename_in, function (err) {
if (err) {
//throw err;
haraka_log('move_file', 'fs.rename ... failed', filename_in + '\n' + JSON.stringify(err));
} else {
haraka_log('move_file', 'fs.rename ... success', filename_in);
}
});
}//function move_file
function delete_file(filename_in) {
fs.unlink(DROP_DIRECTORY_PATH + filename_in, function (err) {
if (err) {
//throw err;
haraka_log('delete_file', 'fs.unlink ... failed', filename_in + '\n' + JSON.stringify(err));
} else {
haraka_log('delete_file', 'fs.unlink ... success', filename_in);
}
});
}//function delete_file
function http_post_file(filename_in) {
var
http = require('http'),
post_options = {
host: 'my.server.com',
port: 80,
path: '/http_mail/' + HOST_NAME + '?' + query_string.stringify({FileName: filename_in}),
method: 'POST',
headers: {'Content-Type': 'text/plain'}
},
post_request,
read_stream;
haraka_log('http_post_file', 'Before http.request', filename_in);
post_request = http.request(post_options, function (post_response) {
haraka_log('http_post_file', 'post_response', ' post_response.statusCode = ' + post_response.statusCode + ' : ' + filename_in);
if (post_response.statusCode === 200) {
delete_file(filename_in);
} else {
move_file(filename_in);//Posted later by retry script;
}
post_response.resume();
});//post_request = http.request(post_options, function(post_response) {
post_request.on('error', function (err) {
haraka_log('http_post_file post_request.on(\'error\' ...)', err.message, filename_in);
move_file(filename_in);
});//post_request.on('error', function(err) {
read_stream = fs.createReadStream(DROP_DIRECTORY_PATH + filename_in);
read_stream.pipe(post_request);
}//function http_post_file
var
x_sender = connection.transaction.mail_from,
x_receiver_list = connection.transaction.rcpt_to,
filename = x_sender + '_' + new Date().toISOString() + '_' + connection.uuid,
writeStream;
filename = filename.replace(/\//g, '');
connection.transaction.add_header('x-sender', x_sender.toString());
x_receiver_list.forEach(function (value) {
connection.transaction.add_header('x-receiver', value.toString());
});
haraka_log('main', 'filename', filename);
writeStream = fs.createWriteStream(DROP_DIRECTORY_PATH + filename);
//connection.transaction.message_stream.pipe(writeStream, {dot_stuffing: true, ending_dot: true});
connection.transaction.message_stream.pipe(writeStream, {dot_stuffing: true});
writeStream.on("close", function () {
haraka_log('main writeStream.on("close"...', 'File Saved!', filename);
http_post_file(filename);
next(OK);
});//writeStream.on("close", function()
};//exports.hook_queue = function(next, connection, params) {