Where to look for real url [closed] - c++
This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.
Closed 10 years ago.
I'm trying to write simple application for downloading videos from youtube.
My code for getting file (http://www.youtube.com/watch?v=pViMzR_ylXg) looks like:
bool FD_core::get_file()
{
QNetworkRequest request;
request.setUrl(QUrl("http://www.youtube.com/watch?v=pViMzR_ylXg"));
connect(network_access_manager_, SIGNAL(finished(QNetworkReply*)),
this, SLOT(onRequestCompleted(QNetworkReply *)));
network_access_manager_->get(request);
return true;
}
void FD_core::onRequestCompleted(QNetworkReply * reply)
{
QByteArray data_ = reply->readAll();
cout << data_.constData();
qDebug() << "size: " << data_.size();
}
In the above function data_.constData() produces lots of text, part (very small) of it:
<!DOCTYPE html>
<html lang="en" dir="ltr" >
<head>
<script>
var yt = yt || {};yt.timing = yt.timing || {};yt.timing.tick = function(label, opt_time) {var timer = yt.timing['timer'] || {};if(opt_time) {timer[label] = opt_time;}else {timer[label] = new Date().getTime();}yt.timing['timer'] = timer;};yt.timing.info = function(label, value) {var info_args = yt.timing['info_args'] || {};info_args[label] = value;yt.timing['info_args'] = info_args;};yt.timing.info('e', "907050,906359,927900,919320,914021,916611,922401,920704,912806,927201,925706,928001,922403,913546,913556,920201,911116,901451");yt.timing.wff = true;yt.timing.info('pr', "1");yt.timing.info('an', "dclk,aftv,afv");if (document.webkitVisibilityState == 'prerender') {document.addEventListener('webkitvisibilitychange', function() {yt.timing.tick('start');}, false);}yt.timing.tick('start');yt.timing.info('li','0');try {yt.timing['srt'] = window.gtbExternal && window.gtbExternal.pageT() ||window.external && window.external.pageT;} catch(e) {}if (window.chrome && window.chrome.csi) {yt.timing['srt'] = Math.floor(window.chrome.csi().pageT);}if (window.msPerformance && window.msPerformance.timing) {yt.timing['srt'] = window.msPerformance.timing.responseStart - window.msPerformance.timing.navigationStart;} </script>
<script>var yt = yt || {};yt.preload = {};yt.preload.counter_ = 0;yt.preload.start = function(src) {var img = new Image();var counter = ++yt.preload.counter_;yt.preload[counter] = img;img.onload = img.onerror = function () {delete yt.preload[counter];};img.src = src;img = null;};yt.preload.start("http:\/\/o-o---preferred---sn-xn5ucu-q0ce---v3---lscache7.c.youtube.com\/crossdomain.xml");yt.preload.start("http:\/\/o-o---preferred---sn-xn5ucu-q0ce---v3---lscache7.c.youtube.com\/generate_204?ip=95.83.224.63\u0026upn=A3aUhLYV55M\u0026sparams=algorithm%2Cburst%2Ccp%2Cfactor%2Cgcr%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire\u0026fexp=907050%2C906359%2C927900%2C919320%2C914021%2C916611%2C922401%2C920704%2C912806%2C927201%2C925706%2C928001%2C922403%2C913546%2C913556%2C920201%2C911116%2C901451\u0026mt=1354207274\u0026key=yt1\u0026algorithm=throttle-factor\u0026burst=40\u0026ipbits=8\u0026itag=34\u0026sver=3\u0026signature=692E605215EB4D2CA407291CA26E14B844768A89.7A2930CE25FDDFC7C4FF5AA56DD02538B0020267\u0026mv=m\u0026source=youtube\u0026ms=au\u0026gcr=ie\u0026expire=1354228237\u0026factor=1.25\u0026cp=U0hUSVJNVl9IUUNONF9KR1pDOi0tSFhhRzVFRkd6\u0026id=a5588ccd1ff29578");</script><title>Die Antwoord - Fok Julle Naaiers (Mike Tyson's Words NOT DJ Hi-Teks) - YouTube</title><link rel="search" type="application/opensearchdescription+xml" href="http://www.youtube.com/opensearch?locale=en_US" title="YouTube Video Search"><link rel="icon" href="http://s.ytimg.com/yts/img/favicon-vfldLzJxy.ico" type="image/x-icon"><link rel="shortcut icon" href="http://s.ytimg.com/yts/img/favicon-vfldLzJxy.ico" type="image/x-icon"> <link rel="icon" href="//s.ytimg.com/yts/img/favicon_32-vflWoMFGx.png" sizes="32x32"><link rel="canonical" href="/watch?v=pViMzR_ylXg"><link rel="alternate" media="handheld" href="http://m.youtube.com/watch?v=pViMzR_ylXg"><link rel="alternate" media="only screen and (max-width: 640px)" href="http://m.youtube.com/watch?v=pViMzR_ylXg"><link rel="shortlink" href="http://youtu.be/pViMzR_ylXg"> <meta name="title" content="Die Antwoord - Fok Julle Naaiers (Mike Tyson's Words NOT DJ Hi-Teks)">
<meta name="description" content="Some of the lyrics of "Die Antwoord" new single "Fok Julle Naaiers" have caused such controversy that Die Antwoord have split with their record label Intersc...">
<meta name="keywords" content="Die Antwoord, Fok Julle Naaiers, Mike Tyson, DJ Hi-Tek, Faggot">
<link rel="alternate" type="application/json+oembed" href="http://www.youtube.com/oembed?url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DpViMzR_ylXg&format=json" title="Die Antwoord - Fok Julle Naaiers (Mike Tyson's Words NOT DJ Hi-Teks)">
<link rel="alternate" type="text/xml+oembed" href="http://www.youtube.com/oembed?url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DpViMzR_ylXg&format=xml" title="Die Antwoord - Fok Julle Naaiers (Mike Tyson's Words NOT DJ Hi-Teks)">
<meta property="og:url" content="http://www.youtube.com/watch?v=pViMzR_ylXg">
<meta property="og:title" content="Die Antwoord - Fok Julle Naaiers (Mike Tyson's Words NOT DJ Hi-Teks)">
<meta property="og:description" content="Some of the lyrics of "Die Antwoord" new single "Fok Julle Naaiers" have caused such controversy that Die Antwoord have split with their record label Intersc...">
<meta property="og:type" content="video">
<meta property="og:image" content="http://i1.ytimg.com/vi/pViMzR_ylXg/mqdefault.jpg">
<meta property="og:video" content="http://www.youtube.com/v/pViMzR_ylXg?version=3&autohide=1">
<meta property="og:video:type" content="application/x-shockwave-flash">
<meta property="og:video:width" content="853">
<meta property="og:video:height" content="480">
<meta property="og:site_name" content="YouTube">
<meta property="fb:app_id" content="87741124305">
<meta name="twitter:card" value="player">
<meta name="twitter:site" value="#youtube">
<meta name="twitter:player" value="https://www.youtube.com/embed/pViMzR_ylXg">
<meta property="twitter:player:width" content="853">
<meta property="twitter:player:height" content="480">
So my question is, where in this file is the url hidden which will allow me to download the wanted file?
What you are trying to do is probably violation of terms of service of youtube.
Also please check youtube-dl.
Also there is Youtube API available.
Related
Want to copy US format phone number
I want to copy a US format phone number and paste it to my field .
If I copy (456)-123-0596 to the field only 456123 is copied to the field.
But I want it to be like the format.
The input field is restricted only for numbers using pattern and maximum length is 10.
onCheckInput(e) {
const onlyNums = e.target.value.replace(/[^0-9]/g, '');
if (onlyNums.length < 10) {
e.target.value = onlyNums;
} else if (onlyNums.length === 10) {
const number = onlyNums.replace(/(\d{3})(\d{3})(\d{4})/, '($1) -$2-$3');
e.target.value = number;
}
}
formatPhoneNumber(number) {
if (number && number != 0) {
number = number.replace(/-/g, '');
number = number.replace('(', '');
number = number.replace(') ', '');
number = number.replace(')', '');
return '(' + number.substr(0, 3) + ')-' + number.substr(3, 3) + '-' + number.substr(6, 4);
}
return '';
}
<Field name="HomePhone"
onInput={this.onCheckInput} maxLength="10"
pattern="\d*" component="input" type="text"
placeholder="HomePhone"
title={' Home Phone: ' + this.formatPhoneNumber(patientInfo.HomePhone)}
/>
How can I remove the braces and hyphens on Paste and save them in the Phone number format?
I've modified the code as below:
onCheckInput(e) {
const onlyNums = e.target.value.replace(/[^0-9]/g, '');
if (onlyNums != e.target.value.replace(/[^\d\.]/g,""))
{onlyNums.replace(/[^\d\.]/g,"");
}
if (onlyNums.length < 10) {
e.target.value = onlyNums;
} else if (onlyNums.length === 10) {
const number = onlyNums.replace(/(\d{3})(\d{3})(\d{4})/, '($1) -$2-$3');
e.target.value = number;
}
}
When I debugged I found that
Since maxLength1s 10 (456)-123- is read and removed braces and hyphens from this input.
How can I get this format with maxLength=10?
I think this approach can solve your problem:
Listen paste event, when it happens increment maxLength property to 1000, then clean the input and set it again to the input value.
I have implemented it in plain DOM because I don't know react, you can use the same approach to implement it in React
const input = document.querySelector('#HomePhone');
input.addEventListener('paste', (event) => {
// Imcrement maxLengt temporally so user can paste input with ( -
input.maxLength=1000
setTimeout(()=>{
// clean input: only get numbers
const result = input.value.replace(/[^\d]/g,'')
// set the clean input into input value
input.value=result
// reset maxLength to 10
input.maxLength=10
}, 1);
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<input name="HomePhone" id="HomePhone" maxLength="10" type="text" pattern="\d*" />
</body>
</html>
C++ Server / Web client , only initial message runs
Title may be unclear, forgive me. I believe this is a client-side problem and I'm not really familiar enough with websockets. I can successfully initialize my web page with a message from my c++ server by sending concatenated string of following:
HTTP header
const char * http_header = "HTTP/1.1 200 OK\r\n"
"Content-length: %ld\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"%s";
Page Source
const char * html_source = R"(<html lang='en'>
<head>
<meta charset='UTF-8'>
<meta name='viewport' content='width = device-width, initial-scale = 1.0'>
<meta http-equiv='X-UA-Compatible' content = 'ie=edge'>
...
MY PAGE CODE GOES HERE
...
</script>
</body>
</html>)";
Transmission loop
char browser_init[strlen(http_header)+strlen(html_source)];
sprintf(browser_init,http_header,strlen(html_source),html_source);
const char * test_message = "a";
while(true)
{
if(ping_count == 0){
connection_status = 3;
recv(client_socket,client_message,sizeof(client_message),0);
send(client_socket,browser_init,sizeof(browser_init),0);
std::this_thread::sleep_for(std::chrono::milliseconds(1000));
}
if(ping_count>0){
if(send(client_socket,test_message,sizeof(test_message),0)){
connection_status = 2;
}
if(!send(client_socket,test_message,sizeof(test_message),0)){
connection_status = 1;
std::cout<<"Connection failed";
}
std::this_thread::sleep_for(std::chrono::milliseconds(1000));
}
ping_count++;
}
This first message is successfully initializing my webpage on browser but I cannot receive following ones.
I tried adding the code below inside <script> , I no longer see my javascript content and Firefox status bar says : Transferring data from localhost (page is continuously loading)
var ws = require("nodejs-websocket");
var client = ws.createServer(function(conn){
console.log("New Connection");
conn.on("message",function(str){
console.log(str);
}).listen(12000,'127.0.0.1');
});
I'm literally sitting here and waiting for help at this point
How to make the characters viewable?
I send a request to Alipay and get this response. I feel like some characters are Chinese characters and I cannot view them.
How can I change it so I can see them as Chinese characters or something that is viewable?
<head><title>\xD6\xA7\xB8\xB6\xB1\
xA6 - \xCD\xF8\xC9\xCF\xD6\xA7\xB8\xB6 \xB0\xB2\xC8\xAB\xBF\xEC\xCB\xD9\xA3\xA1</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\" /><meta http-equiv=\"x-ua-compatible\" content=\"ie=7\" />
<meta name=\"description\" content=\"\xD6\xD0\xB9\xFA\xD7\xEE\xB4\xF3\xB5\xC4\xB5\xDA\xC8\xFD\xB7\xBD\xB5\xE7\xD7\xD3\xD6\xA7\xB8\xB6\xB7\xFE\xCE\xF1\xCC\xE1\xB9\xA9\xC9\xCC\" /><meta name=\"keywords\" content=\"\xCD\
xF8\xC9\xCF\xB9\xBA\xCE\xEF/\xCD\xF8\xC9\xCF\xD6\xA7\xB8\xB6/\xB0\xB2\xC8\xAB\xD6\xA7\xB8\xB6/\xB0\xB2\xC8\xAB\xB9\xBA\xCE\xEF/\xB9\xBA\xCE\xEF\xA3\xAC\xB0\xB2\xC8\xAB/\xD6\xA7\xB8\xB6/\xD6\xA7\xB8\xB6\xB1\xA6,\xD4\xDA\xCF\xD
F/\xB8\xB6\xBF\xEE,\xCA\xD5\xBF\xEE/\xCD\xF8\xC9\xCF,\xC3\xB3\xD2\xD7/\xCD\xF8\xC9\xCF\xC3\xB3\xD2\xD7\" /><link rel=\"icon\" href=\"https://img.alipay.com:443/img/icon/favicon.ico\" type=\"image/x-icon\" /><l
ink rel=\"shortcut icon\" href=\"https://img.alipay.com:443/img/icon/favicon.ico\" type=\"image/x-icon\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"https://img.alipay.com:443/assets/c/global/global_v1.css?t=20081
119.css\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"https://img.alipay.com:443/assets/c/sys/sys.tabs.css?t=20080709.css\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"https://img.alipay.com:443/assets
/c/typography/ot.old.css?t=20080709.css\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"https://img.alipay.com:443/assets/c/typography/as.kt.css?t=20080709.css\" /></head>
<!--[if gte IE 6]><script type='text/javascript' src='https://img.alipay.com:443/js/sys/sys.object.js?t=20080122.js' defer='d
efer'></script><![endif]--><style type=\"text/css\">.topsearch{font-size:12px;position:relative;}.topsearch form{margin:-2px 0 0 0;padding:0}.topsearch form input{width:94px;height:13px;line-height:13p
x;border:1px solid #d7d7d7;padding:2px 2px 0 2px;font-size:12px}.topsearch form button{width:40px;height:18px;margin:0 0 0 4px;border:1px solid #d7d7d7;background:#f3f3f3;padding:0}.topsearch .xnews{border:0;position:
absolute;top:0;right:-15px}#Header #QuickLinks .QuickLinksMore{position:relative;}#Header #QuickLinks .QuickLinksMore ol{display:none;position:absolute;top:18px;left:5px;float:none;width:65px;text-align:left;z-index:9
999;text-align:left;border:1px solid #ccc;background:#fff;margin:0;padding:5px 0}#Header #QuickLinks .QuickLinksMore ol li{display:block;float:none;background:none;margin:0;padding:2px 3px;text-align:center}#Header #Q
uickLinks .QuickLinksMore ol li a{text-decoration:none;color:#666;margin:0;padding:0}#Header #QuickLinks .QuickLinksMore ol li a:hover{color:#f60}}</style><!-- Header start--><div id=\"Header\" class=\"cle
arfix\"> <!-- HeadTop start--> <div id=\"HeadTop\"> <div id=\"Logo\"></div> <div id=\"QuickLink
s\" style=\"padding-top:8px\"> <ul><li class=\"topsearch\" style=\"background:none\"><form id=\"topsearch\" name=\"topsearch\" action=\"https://help.alipay.com/support/search_new_result.htm\" method=\"get
\" onsubmit=\"return checkTopSearch()\"><input type=\"hidden\" name=\"_form_token\" value=\"kp76AFTuuAIZrf7eAcL6jMopmn2ka5fL\"/><input id=\"word\" name=\"word\" type=\"text\"/><button type=\"submit
\">\xCB\xD1\xCB\xF7</button></form></li><li>\xB0\xEF\xD6\xFA\xD6\xD0\xD0\xC4</li><li><a href=\"https:
//jifen.alipay.com/index.htm?src=yy_jifen_sy01\" target=\"_blank\">\xBF\xEC\xC0\xD6\xBB\xFD\xB7\xD6</a></li><li id=\"QuickLinksMore1\" class=\"QuickLinksMore\"><a href=\"https://wow.alipay.com?src=wow_ho
me\">\xCD\xDB\xA3\xA1\xD6\xA7\xB8\xB6\xB1\xA6</a><ol><li>\xB4\xD9 \xCF\xFA \xBD\xD6</li><li><a href=\"https://wow
.alipay.com/overseas.htm?src=overseas_home\">\xBA\xA3\xCD\xE2\xB9\xBA\xCE\xEF</a></li><li>\xBA\xCF\xD7\xF7\xC9\xCC\xBC\xD2</l
i><li>\xBB\xE1\xD4\xB1\xB7\xFE\xCE\xF1</li></ol></li></ul><script type=\"text/javascript\">var search
Info=document.getElementById(\"word\");function searchclearInfoJs(){if(searchInfo.value==\"\xCA\xE4\xC8\xEB\xC4\xFA\xB5\xC4\xCE\xCA\xCC\xE2\"){searchInfo.style.color=\"#000\";searchInfo.value=\
"\";}}function searchinputInfoJs(){if(searchInfo.value==\"\"){searchInfo.style.color=\"#999\";searchInfo.value=\"\xCA\xE4\xC8\xEB\xC4\xFA\xB5\xC4\xCE\xCA\xCC\xE2\";}}if(se
archInfo!=undefined){if(searchInfo.value==\"\"||searchInfo.value==\"\xCA\xE4\xC8\xEB\xC4\xFA\xB5\xC4\xCE\xCA\xCC\xE2\"){searchInfo.style.color=\"#999\";searchInfo.value=\"\xCA\xE4\xC8\xEB\xC4\xFA\x
B5\xC4\xCE\xCA\xCC\xE2\";searchInfo.onfocus=function(){searchclearInfoJs();}searchInfo.onblur=function(){searchinputInfoJs();}}}function showMore(obj){var oMor
e=document.getElementById(obj);var oMoreUl=oMore.getElementsByTagName(\"ol\")[0];if(document.all){//ieoMore.setAttribute(\"onmouseover\",eval(function(){oMoreUl.style.display=\"block\";}));oMore.setAttribu
te(\"onmouseout\",eval(function(){oMoreUl.style.display=\"none\";}));oMoreUl.setAttribute(\"onmouseover\",eval(function(){oMoreUl.style.display=\"block\";}));oMoreUl.setAttribute(\"onmouseout\",eval(function(){oMo
reUl.style.display=\"none\";}));}else{//ffoMore.addEventListener(\"mouseover\", function(){oMoreUl.style.display=\"block\";}, false);oMore.addEventListener(\"mouseout\", function(){oMoreUl.style.display=\"none
\";}, false);oMoreUl.addEventListener(\"mouseover\", function(){oMoreUl.style.display=\"block\";}, false);oMoreUl.addEventListener(\"mouseout\", function(){oMoreUl.style.display=\"none\";}, false);}}sh
owMore(\"QuickLinksMore1\");function checkTopSearch(){if(searchInfo.value==\"\"||searchInfo.value==\"\xCA\xE4\xC8\xEB\xC4\xFA\xB5\xC4\xCE\xCA\xCC\xE2\"){alert(\"\xC7\xEB\xCA\xE4\xC8\xEB\xC4\xFA\xB5\xC4\xCE\xCA\x
CC\xE2 \xC8\xE7\xA3\xBA\xCD\xFC\xBC\xC7\xC3\xDC\xC2\xEB\");return false;}return true;}</script><ul style=\"clear:both\"><li class=\"Inpour\" style=\"background:none\"><a href=\"https://www.
alipay.com/user/inpour_request.htm?src=yy_content_czbutton\"><img style=\"position:absolute;top:-15px;margin-left:70px;\"src=\"https://img.alipay.com:443/assets/i/base/icon/sjf.gif\" width=\"43\" height=\"22\" border=\"0\" a
lt=\"\xB3\xE4\xD6\xB5\xCB\xCD\xBB\xFD\xB7\xD6\"/></a></li><li>\xD0\xC5\xC8\xCE\xBC\xC6\xBB\xAE</li>\
t<li>\xC4\xFA\xBA\xC3\xA3\xAC\xC7\xEB \xB5\xC7\xC2\xBC</li>
</ul> </div> </div> <!-- HeadTop ending--> </div><!-- Header ending--><div id=\"Info\"><div class=\"ExclaimedInfo\"><strong>\xB5\xF7\xCA\xD4\xB4\xED\xCE\x
F3\xA3\xAC\xC7\xEB\xBB\xD8\xB5\xBD\xC7\xEB\xC7\xF3\xC0\xB4\xD4\xB4\xB5\xD8\xA3\xAC\xD6\xD8\xD0\xC2\xB7\xA2\xC6\xF0\xC7\xEB\xC7\xF3\xA1\xA3</strong> <div class=\"Todo\">\xB4\xED\xCE\xF3\xB4\xFA\xC2\xEB ILLEGAL_PARTNER <
/div> <ul> <li>\xCB\xB5\xC3\xF7:\xC8\xE7\xB9\xFB\xC4\xFA\xB2\xBB\xCA\xC7\xD2\xF2\xCE\xAA\xB1\xBE\xBD\xD3\xBF\xDA\xBC\xAF\xB3\xC9\xB5\xF7\xCA\xD4\xB6\xF8\xBF\xB4\xBC\xFB\xB8\xC3\xB4\xED\xCE\xF3\xCC\xE1\xD0\xD1\
xA3\xAC\xC7\xEB\xC1\xAA\xCF\xB5\xB1\xBE\xB4\xCE\xC7\xEB\xC7\xF3\xC0\xB4\xD4\xB4\xCD\xF8\xD5\xBE\xA3\xAC\xB1\xBE\xB4\xED\xCE\xF3\xCA\xF4\xD3\xDA\xCD\xF8\xD5\xBE\xBC\xAF\xB3\xC9\xBD\xD3\xBF\xDA\xB5\xC4\xB4\xED\xCE\xF3\xA1\xA3</
li> </ul><ul><div class=\"HelpSubmit\"><b>\xCE\xCA\xCC\xE2\xC3\xBB\xBD\xE2\xBE\xF6\xA3\xBF<input type=\"button\" value=\"\xCB\xD1\xCB\xF7\xD5\xD2\xB4\xF0\xB0\xB8\" onclick=\"window.open('http://help
.alipay.com/support/index.htm?src=yy_reach_error','_self')\">\xA3\xAC\xBB\xF2\xD5\xDF\xCF\xF2\xCD\xF8\xD3\xD1\xCC\xE1\xCE\xCA\xA1\xA3</b
></div></ul></div></div><!--footer start--><div id=\"Foot\"> <div class=\"Shell clearfix\"> <ul> <li><a href=\"https://www.alipay.com/static/aboutalipay/about.htm\" target=\"_bla
nk\">\xB9\xD8\xD3\xDA\xD6\xA7\xB8\xB6\xB1\xA6</a></li> <li>\xCC\xE5\xD1\xE9\xBC\xC6\xBB\xAE</li> <li><a href=\"https://blog.alipay.com\" target=\"_blan
k\">\xB9\xD9\xB7\xBD\xB2\xA9\xBF\xCD</a></li> <li>\xB3\xCF\xD5\xF7\xD3\xA2\xB2\xC5</li> <li><a href=\"https://www.alipay.com/static/aboutalipay/contac
t.htm\" target=\"_blank\">\xC1\xAA\xCF\xB5\xCE\xD2\xC3\xC7</a></li> <li>International Business</li> <li><a href=\"https://www
.alipay.com/static/aboutalipay/englishabout.htm\" target=\"_blank\">About Alipay</a></li> </ul> </div> <ul class=\"CopyRight clearfix\"> <li><a href=\"https://www.alipay.com/static/phone/alipay_pho
ne.htm?src=yy_sy_sjzf\" target=\"_blank\">\xB5\xE7\xBB\xB0\xD6\xA7\xB8\xB6\xB1\xA6</a>\xA3\xBA""400-66-13800 | \xCA\xD6\xBB\xFA\xD6\xA7\xB8\xB6\xB1\xA6\xA3\xBAwap.alipay.com</li> <li>\xD6\xA7\xB8\xB6\xB1\xA6\xB0\xE6\xC8\
xA8\xCB\xF9\xD3\xD0 2004-2016 ALIPAY.COM</li> </ul> <div id=\"ServerNum\">mapi-60-72</div></div><!--footer ending-->"
Here is my code in Qt :
void sendRequest();
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
sendRequest();
return a.exec();
}
void sendRequest(){
QNetworkProxyFactory::setUseSystemConfiguration(true);
QEventLoop eventLoop;
QNetworkAccessManager mgr;
QObject::connect(&mgr, SIGNAL(finished(QNetworkReply*)), &eventLoop, SLOT(quit()));
// the HTTP request
QNetworkRequest req( QUrl( QString("https://mapi.alipay.com/gateway.do?_input_charset=UTF-8¤cy=USD¬ify_url=10.237.221.84:80&out_trade_no=123456789&partner=2088101122136241&sign=760bdzec6y9goq7ctyx96ezkz78287de&subject=Coke&sign_type=MD5&service=create_forex_trade&total_fee=0.01") ) );
QNetworkReply *response = mgr.get(req);
eventLoop.exec(); // blocks stack until "finished()" has been called
if (response->error() == QNetworkReply::NoError) {
//success
qDebug() << "Success\n\n\n\n" << response->readAll();
delete response;
}
else {
//failure
qDebug() << "Failure" <<response->errorString();
delete response;
}
}
response->readAll() returns a QByteArray which is printed in form shown in your question (bytes with noneprintable characters are encoded with \xXY). Before you can print text in such raw form you have to be sure how it is encoded. From what I see (in comments for this answer too) your text is UTF-8 encoded. So simple conversion to QString should do the job to have readable html: QString html(response->readAll()); Now in docs you can find other ways, like QString::fromUtf8. To get rid of the html tags and get only the text content you have to use QTextDocument. QTextDocument doc; doc.setHtml(html); qDebug() << "Success\n\n" << doc.toPlainText() From your comment I can see that you don't need this last step.
Email Crawler in c++
I have this assignment that I just can't figure out. I want my function to get a line from an html file and extract an email from it. Then Split the email into email, username, and domain. Then i want to have a third function to get the next email in the html file.
void get_line_emails(ifstream &in_stream, ofstream &out_stream, string email[], string users[], string domain[])
{
int location, end;
string mail;
getline(in_stream, mail);
location = mail.find("mailto:");
end = mail.find(">");
mail = mail.substr(location, (end - 1));
cout << mail << endl;
}
void get_next_email(ifstream &in_stream, string mail)
{
getline(in_stream, mail);
int location = mail.find("mailto:");
int end = mail.find(">");
mail = mail.substr(location, (end - 1));
}
void split_email(string email[], string domain[], string users)
{
int count = 300;
string mail;
for (int i = 1; i < count; ++i) //For loop to input stream.
{
mail = email[i];
int location = mail.find("#");
int end = mail.find(">");
string domain[i] = mail.substr(location, (end - 1));
string users[i] = mail.substr(0, location);
}
}
I also get this error when I run the program:
terminate called after throwing an instance of 'std::out_of_range'
what(): basic_string::substr: __pos (which is 4294967295) > this->size() (which is 244)
Abort (core dumped)
If it helps heres my main function:
int main()
{
string email[1000];
string users[1000];
string domain[1000];
int count = 300;
string filename;
ifstream in_stream;
ofstream out_stream;
cout << "Enter input filename: " << endl;
cin >> filename; //Input of filename.
in_stream.open(filename.c_str()); //Opening the input file for population and other information.
if (in_stream.fail()) //Checking to see if file opens.
{
cout << "Error opening input/output files" << endl; //Telling user file isn't opening.
exit(1); //Exiting program.
}
out_stream.open("Emails.txt");//If it does not exist it will not be created. If it exists it will be overwritten.
out_stream << "Email " << right << setw(20) << "User " << right << setw(20) << "Domain" << endl;
out_stream << "_______________________________________________________________________________" << endl;
get_line_emails(in_stream, out_stream, email, users, domain);
//split_email(email, domain, users);
sort(email, users, domain, count);
in_stream.close(); //Closing the in stream.
out_stream.close(); //Closing the out stream.
cout << "A new file Emails has been created with the emails extracted. Thank you." << endl; //End message.
return 0;
}
Part of the HTML file I am inputting:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <!-- Content Copyright Ohio University Server ID: 2-->
<!-- Page generated 2016-03-22 14:55:21 by CommonSpot Build 9.0.3.119 (2015-08-14 15:00:01) -->
<!-- JavaScript & DHTML Code Copyright © 1998-2015, PaperThin, Inc. All Rights Reserved. --> <head>
<meta name="Description" id="Description" content="Faculty" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="Keywords" id="Keywords" content="engineering" />
<meta name="Generator" id="Generator" content="CommonSpot Content Server Build 9.0.3.119" />
<link rel="stylesheet" href="/style/ouws_0111_allin1_nonav.css" type="text/css" />
<link rel="stylesheet" href="/engineering/upload/engineeringEV.css" type="text/css" />
<link rel="stylesheet" href="/engineering/upload/gridpak.css" type="text/css" />
<style type="text/css">
.mw { color:#000000;font-family:Verdana,Arial,Helvetica;font-weight:bold;font-size:xx-small;text-decoration:none; }
a.mw:link {color:#000000;font-family:Verdana,Arial,Helvetica;font-weight:bold;font-size:xx-small;text-decoration:none;}
a.mw:visited {color:#000000;font-family:Verdana,Arial,Helvetica;font-weight:bold;font-size:xx-small;text-decoration:none;}
a.mw:hover {color:#0000FF;font-family:Verdana,Arial,Helvetica;font-weight:bold;font-size:xx-small;text-decoration:none;}
</style> <script type="text/javascript">
<!--
var gMenuControlID = 0;
var menus_included = 0;
var jsDlgLoader = '/engineering/about/people/loader.cfm';
var jsSiteID = 1;
var jsSubSiteID = 6148;
var js_gvPageID = 2177477;
var jsPageID = 2177477;
var jsPageSetID = 0;
var jsPageType = 0;
var jsControlsWithRenderHandlers = ",1366057,1407941,1408984,1409120,1409220,1463564,1653027,1464282,1484855,1663987,1703445,1714178,1719109,1716274,1719109,1719109,1722161,1748941,1743237,1767756,1771704,1240950,1795856,1799077,1806233,1814378,1814378,1814378,36,1156323,958270,959997,36,1239784,1239535,1240103,1264495,1264559,1240832,1241026,1268776,1269019,1365662,1365798,1367666,1367112,1367146,1403322,1236239,1644435,1707482,36,1707482,1708185,1708185,1707846,1718301,1718356,1722082,1735273,1156092,1736675,1738340,1758445,1487747,1740183,1750814,1755341,36,4,1241075,1320447,1410344,1440455,1462605,1463564,1642797,1644920,1644955,1659254,1656252,1707459,1692320,1290294,1705469,1705596,1707846,1708163,1708367,1719109,1719109,1719109,1728460,1718356,1706218,1725200,1739433,1193755,1782561,1806244,1781609,1783821,1784445,1783821,1788664,1750814,1781533,1781788,1812661,1810778,1822088,1644219,39,36,36,438722,443887,523857,542895,36,867909,671210,733944,1074794,671213,671222,671225,671231,671234,1190981,1190914,1190943,1193755,1236239,1239497,1280404,1284325,860732,860741,1080236,671204,1237273,671216,671219,671228,671237,671207,1190973,1243855,1264544,1264564,1241172,1267910,1240840,1240849,1241220,1264699,1241365,1264571,1289737,8,1290184,1321465,1322500,1363024,1365670,1365954,1365998,1366014,2214456,2068897,1837521,1190931,1190931,2239453,1992371,1967400,1992371,1808005,1792195,1792195,1156323,1716646,1967400,1763595,1080236,1971121,1960374,1290151,2007514,2013290,2012663,2012302,2012026,2012663,2021773,1191128,426028,1808005,2108357,426028,36,36,36,2145522,2145522,2186158,1792195,1827509,1827486,1827486,1840641,1843869,1843869,1843879,1843879,1827509,1827486,635375,1190931,1853586,1854295,1854509,1854614,1855117,1855125,1859942,1232520,996841,999747,1074782,801933,1156092,1231112,1240950,1264518,1264536,1240828,1241280,1241033,1241322,1265043,1268750,1269805,1287352,1290231,1321501,1322534,1368599,1407796,1407917,1408156,1408447,1461409,1463586,1466072,1660460,1704499,1701618,1704211,1701596,1707383,1706218,1713783,1713443,1715100,1716646,1714352,1723376,1706218,1717134,1717134,1759841,1740127,1740183,1737868,1755222,1763595,1750814,1812661,1784600,860732,1785700,1786558,1786640,1788366,1788803,1787835,1758851,1802116,1802116,1802116,1802116,1810778,1870892,1827509,1854528,1859942,1859942,1870780,1865837,1905202,1905202,1750814,1243855,1763595,1806295,1806280,860741,1893429,1893243,1893429,1898989,1913110,1915322,1921065,1871293,1872541,1900928,1708367,1874008,1827509,1808005,1948002,1708367,1859942,1827509,1243851,1959041,1243851,1746007,1243851,1243851,1967400,1967400,1191128,1780116,1960374,1960374,1780116,1827486,1156092,1153939,36,1827486,1859942,1974908,1156092,1156323,1763595,1080236,1763595,1854295,1854641,1865837,1867230,1867211,1869328,738180,8,1191128,1808005,1967400,1156323,2104541,2058309,2013290,2047047,2068897,2010928,2087246,2010928,2104541,2104541,2104578,2115265,1708185,2120941,426028,2129783,1663761,2166426,2068897,1967400,1967400,1967400,2068897,1808005,1716646,1833649,1827509,2010085,36,2167570,2068897,1706218,1156092,2012337,2186146,1191128,2191212,1190931,1156323,1716646,2012663,2508370,1992371,1080236,2280950,1808005,36,36,1156323,1808005,1819898,1191128,1243855,2281280,2013290,2239453,1837521,1156323,1644219,1849105,1849105,2376567,2381406,1808005,1808005,1156092,2552104,2552104,2281280,1805958,1967400,2068897,2390125,1808005,2444428,2459222,2013290,2568057,2508370,1661786,1763595,2349059,2349059,2438289,1708367,2120941,2508370,2120951,2596819,1156323,1191128,2239453,2367160,2012337,2451225,1808005,2615851,1808005,1849105,55,55,2734901,1191128,55,55,2012663,2734829,1967400,1967400,1996683,1992371,2013290,2018337,2012337,2018364,1156092,1363024,1967400,1888191,1888191,1805958,1967400,2057362,39,1153939,1708185,2010085,2010085,2010085,2079659,2079659,2010928,2010928,2087246,1808005,36,1190931,2369360,2380491,1808005,2120941,1153939,1708367,2511867,2540778,1704499,1787140,1758479,1716646,1827486,2239453,1808005,1808005,1080236,2451225,2120941,1808005,";
var jsDefaultRenderHandlerProps = ",,";
var jsAuthorizedControls = ",65684,62081,62169,62236,62658,67860,70371,70560,70645,70911,71567,71570,71579,71582,71585,71588,71630,71645,73051,73055,73135,73175,73177,73179,73181,73183,73185,75593,75596,75598,75600,75602,75604,75943,77337,77339,77367,77369,77371,77397,77399,77401,77403,77406,77408,77423,77425,77429,77431,77433,77435,77454,77456,77458,77460,77462,77464,77524,77526,77528,77530,77533,77535,77564,77566,77569,77572,77579,77581,77755,77759,77771,77940,78254,78304,78759,81449,81447,81452,81454,86430,95027,110992,112176,114559,122476,122590,122592,122594,122998,123000,123002,123004,123010,123012,123014,123016,123113,123115,123117,123119,123121,123123,123125,123127,123129,123131,123133,123135,123137,123139,123141,123143,123193,123217,123219,123221,543,1784,1786,1791,1829,1901,1903,3434,3062,10165,17470,19113,17964,17975,20458,18450,19246,20461,20532,20535,20631,22975,22976,29043,29065,29198,29497,29894,32565,37812,42989,50270,50283,51427,51770,51940,51987,52309,52306,52325,52338,52440,52727,52935,53585,53717,54936,55739,56170,57624,70375,57659,58549,60274,60859,65324,65375,65378,65630,341266,341268,341270,343681,344120,344123,344125,344127,344129,344131,344133,1155418,344136,344142,344918,344920,346066,349254,349260,353078,353096,353249,353368,353500,353518,356036,356519,356527,356534,359303,359315,359619,365645,365647,365651,372637,372642,373892,409046,385136,402687,408565,416225,423380,423445,423634,423934,424407,424503,426545,425757,425785,426028,426263,433478,438722,440105,440778,441424,441447,441488,441530,441743,441914,441917,441920,441923,442181,442184,442228,442231,442767,443887,444519,444536,448085,446524,447856,448121,450241,450489,450583,451031,123223,123225,123227,123229,123231,123233,123235,123237,123239,123241,123243,123245,123247,123249,133712,138458,138462,138472,138493,140917,152719,152941,155012,174553,176272,182475,185313,185545,185572,185600,185653,189527,189717,189912,189915,209638,190014,209612,209640,210772,233752,233754,240835,242005,245048,245061,246392,247905,253143,255217,258368,258370,258448,259352,259507,259535,259540,259557,259597,270079,272462,272484,273374,275946,276171,281359,281731,281886,285356,285362,285364,289279,290246,293573,293580,293990,306206,306372,307096,307117,1409047,1410292,1410344,1440455,1462692,1462605,1463206,1463358,1463363,1463559,1463575,1466067,1466072,1466949,565361,577664,577666,580782,580785,586106,593209,631308,631375,671204,671207,671210,671213,671216,671219,671222,671225,671228,630659,630928,631186,631230,671231,703507,703512,872630,872675,951724,1070639,1070773,1071579,1074782,1074794,1116648,1118602,1153954,1153962,310170,319781,325794,326607,326613,331241,331243,331248,338287,338305,338307,338805,340095,340098,341260,341264,523857,523883,540187,541324,542748,542895,543075,543442,543531,545031,545034,545925,550439,550694,551327,551342,551843,551848,554801,557468,563421,563522,564335,564350,564362,565392,565403,565430,565440,565460,578908,580751,589443,589691,589825,631522,631342,671234,704390,704500,730405,733189,733195,733931,733944,735045,721050,721061,720116,803640,807230,860741,867909,869754,878921,872399,911315,951437,952815,952921,954983,956036,958270,960899,960901,960903,960912,960914,960916,959997,990601,993320,996841,999438,999472,999741,999747,999871,1034551,1034553,1035679,1035681,1070829,1080236,1111202,1112587,1112594,1116088,1117180,566481,567951,635375,671237,705089,708277,738180,738270,738274,756640,808480,993241,993247,993326,998452,999162,1034549,1034793,1034795,1118837,1121340,1150407,1152064,1153928,1153933,1153939,1153948,1154637,1156092,1156320,753746,754822,754960,755002,755412,755426,755453,801854,801933,802037,802071,802077,802080,802083,802087,802091,802417,802525,804060,860732,753752,754885,753748,754422,802568,451785,453349,452911,452935,454345,454916,464533,465324,476013,469286,469308,470126,472222,476011,476015,489860,478066,482338,482852,492048,486517,489015,489681,492017,492050,492052,498151,516411,516413,516415,516417,516419,516422,1935063,1939712,1992371,1996683,2010928,2012302,2012840,2013290,2021773,2047047,2058309,2079659,2104541,2108357,2115265,2120941,2120951,2135749,2145522,2157693,2157775,1193061
<img border="0" alt="YouTube" title="YouTube" src="/engineering/images/icon_youtube.png" /><span class="imageCaption" style="display:none;"></span>
</div>
<div class="imageImg">
<img border="0" alt="LinkedIn" title="LinkedIn" src="/engineering/images/icon_linkedin.png" /><span class="imageCaption" style="display:none;"></span>
</div>
<div class="imageImg">
<img border="0" alt="Facebook" title="Facebook" src="/engineering/images/icon_fb.png" /><span class="imageCaption" style="display:none;"></span>
</div>
<div class="imageImg">
<img border="0" alt="Twitter" title="Twitter" src="/engineering/images/icon_twitter.png" /><span class="imageCaption" style="display:none;"></span>
</div>
<div class="imageImg">
<img border="0" alt="Instagram" title="Instagram" src="/engineering/images/russ_instagram.png" /><span class="imageCaption" style="display:none;"></span>
</div>
</div></div></div><div id="cs_control_2398199" class="cs_control CS_Element_Custom"></div></div></div><div id="cs_control_2142700" class="contentWrap col row"><div title="" id="CS_Element_2177477_2142700"><div id="cs_control_2142767" class="cs_control col pageTitle">
<!-- Portal Content -->
<div class="content-element">
<h2>Faculty</h2>
<p></p>
<br />
</div>
<!-- Portal Content -->
</div><div id="cs_control_2142762" class="mainContent col"><div title="" id="CS_Element_2177477_2142762"><div id="cs_control_2142772" class="cs_control CS_Element_Custom">
<!-- Portal Content -->
<div class="content-element">
<p> </p>
</div>
<!-- Portal Content -->
</div><div id="cs_control_2177314" class="cs_control">
<style type="text/css">
/* This fixes some issues with the anchor links from the A-Z bar at the top */
.group a[name]
{
position: absolute;
}
</style>
<div id="staffAlpha">
<ul class="azList">
<li class="children ">A</li>
<li class="children ">B</li>
<li class="children ">C</li>
<li class="children ">D</li>
<li class="children ">E</li>
<li class="children ">F</li>
<li class="children ">G</li>
<li class="children ">H</li>
<li class="children ">I</li>
<li class="children ">J</li>
<li class="children ">K</li>
<li class="children ">L</li>
<li class="children ">M</li>
<li class="children ">N</li>
<li class="children ">O</li>
<li class="children ">P</li>
<li>Q</li>
<li class="children ">R</li>
<li class="children ">S</li>
<li class="children ">T</li>
<li class="children ">U</li>
<li class="children ">V</li>
<li class="children ">W</li>
<li class="children ">X</li>
<li class="children ">Y</li>
<li class="children last">Z</li>
</ul>
<div id="azContent">
<div class="group">
<a id="A" name="A"></a>
<h3 class="letter">A</h3>
Nasseef Abukamail<br />
Electrical Engineering and Computer Science <br />
Associate Lecturer <br />
abukamai#ohio.edu <br />
740.593.1229
<div><br />
</div>Khairul Alam<br />
Mechanical Engineering, Center for Advanced Materials Processing, ESP Lab <br />
Professor <br />
alam#ohio.edu <br />
740.593.1558
<div><br />
</div>Muhammad Ali<br />
Biomedical Engineering, Mechanical Engineering, ESP Lab <br />
Associate Professor <br />
alim1#ohio.edu <br />
740.593.1389
<div><br />
</div>Deak Arch<br />
Aviation <br />
Associate Professor, Assistant Chair <br />
arch#ohio.edu <br />
740.597.2688
Divide the problem up into tasks. You have four tasks and they should be tackled individually. Do not proceed to the next task until you know the current task does exactly what you want. Working on more than one task at a time widens the problem area, and this turns out to be more than a geometric expansion. Bugs tend to interact with other bugs. A bug in task 1 may make a bug in task 2 look different, causing you to debug the wrong symptoms.
Consider giving each task a function or if the task is complex, its own file. This way each task can be individually tested easily. Why? What if you change the code from task 1 and want to know if it broke? Sure you can test the whole program, but what if you broke 2 things? If you want to test the splitter logic with a few hundred addresses to make sure you correctly handle all of the weird edge cases, you can just call the splitter function with those few hundred strings and not have to invent a complicated file.
Task 1: read a file line by line.
This is first because until you can do this, you can't do much else.
std::string line;
while (std::getline(in_stream, line))
{
// output line to compare with source
}
will read a file until it cannot be read anymore be this end of file, corrupt data, some joker pulling out the USB drive while you're reading it, or sundry other problems. How do you test this? An easy way is to read the file in from one stream line by line and print it to the console. This is a pretty big file and the eye is only so useful for comparing large amounts of text, so write all received lines to an output file and then diff the files. If they match, you win. Move on to task 2. If they don't, debug.
Task 2: Look for "mailto".
This take a line from task 1 and looks for "mailto"
size_t loc = line.find("mailto:");
if (loc != std::string::npos)
{
std::cout << "found: " << line << std::endl;
}
This is an easier thing to test so we can get away with the mk 1 eyeball or Notepad and ctrl+f to confirm that all mailto lines were printed.
Task 3: Isolate the address.
You've found a line containing "mailto" in task 2. Now you have to isolate the address on that line. You have the starting location from task 2 and you may be able to extract the string between the ':' after "mailto" and the next '\"'. I'm not going to spend much time here because this is the meat and potatoes of this assignment. I do too much here and I pass the course, not you, but basically this is a find and a substr similar to what OP has in their question.
Task 4: Split the Address from task 3
This is more work with find and substr to isolate the parts of the address.
You need to make a loop and test every line until you find one with the string "mailto:".
Here is some example code to give you an idea of how you can do that:
std::ifstream ifs("test.txt");
std::string line; // general buffer
// read each line
while(std::getline(ifs, line))
{
// try to find "mailto:"
std::string::size_type pos = line.find("mailto:");
// ignore if not found
if(pos == std::string::npos)
continue;
// we found it! extract address from line here
// remember that pos holds the start of the information
// ...
}
Issues with conversion between QString and QByteArray
I have a strange issue converting QString to QByteArray:
qDebug()<<"content to encryp:\n"<<content<<"\n";
QString pwHash = generalSettings.password;
QByteArray secretKey;
secretKey.append(pwHash);
QString clearText(content);
QBlowfish bf(secretKey);
bf.setPaddingEnabled(true);
QByteArray encryptedBa = bf.encrypted(clearText.toUtf8());
qDebug()<<"encryptedBa:";
qDebug()<<encryptedBa<<"\n";
const char* cString = encryptedBa.constData();
QString saved = QString::fromUtf8(cString);
QByteArray decryptedBa = bf.decrypted(saved.toUtf8());
qDebug()<<"decryptedBa:";
qDebug()<<decryptedBa<<"\n";
The output is this:
content to encryp:
"<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
<html><head><meta name="qrichtext" content="1" /><style type="text/css">
p, li { white-space: pre-wrap; }
</style></head><body style=" font-family:'Arial'; font-size:12pt; font-weight:400; font-style:normal;">
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">HALLO</p></body></html>"
encryptedBa:
"?6N?x9?1!???P?a?+]6H???O??Y?or??l?
??k#???m??d?.?M?o?$F??I(?
7?3??NtE-?fH(?w|sL?i??
cipherText (Input to decrypt):
"?6N?x9?1!???P?a?+]6H???O??Y?or??l?
??k#???m??d?.?M?o?$F??I(?
7?3??NtE-?fH(?w|sL?i??"
decryptedBa:
""
Now the strange part: If I switch the line
QByteArray decryptedBa = bf.decrypted(saved.toUtf8());
to
QByteArray decryptedBa = bf.decrypted(encryptedBa);
everythink works. BUT: The output is 100% the same, only that the decryptedBa at the end is a duplicate of contentas it should be.
I am also wondering, why the cipherText has a " at the end. But that is the same for both versions. What am I missing here?
EDIT:
Following the tip from the answer below and the comments, I came up with this solution:
QString saved = encryptedBa.toBase64();
std::string stdString = std::string(saved.toUtf8().data());
QByteArray fromSaved = QByteArray::fromBase64(stdString.data());
The " at the end of the ciphertext is also gone, then.
The cypher text is likely not valid UTF8. This means that the data is not guaranteed to properly round-trip through QString::fromUtf8(data).toUtf8();. Double check that encryptedBa and saved.toUtf8() are actually exactly the same