How can I get things from website

[jsulm]

@victor-wang Then it is an issue with your server - it is either too slow or it cannot handle concurrent requests.

[victor wang]

@jsulm
Did you see my code that i had just gave you?

I'm not quite sure that is the server issue.
I doubt that my code is not really perfect.
Could you help me see the code?

[jsulm]

@victor-wang Your do..while loop is an infinite loop if you get a response != 200
It does not make sense as a reply is either 200 or not: it will not become 200 if it wasn't before by some magic, so remove that loop.
As I said 500 means internal server error. You get a connection but the server fails to do what it is expected to do and sends 500 back.
If you want to slow down your requests you can use QTimer.

[victor wang]

@jsulm

If i change my code like this.

It will failed for a few times.

I'm trying to solve this kind of problem

[jsulm]

@victor-wang What does fail mean? Do you get 500?

[jsulm]

@victor-wang If you do not want to send all request in parallel you can do it one after another.

[victor wang]

@jsulm
Yes, it will show 500.

how to do that?
Could you teach me?

Or can i do 5 times and another 5 times.

[jsulm]

@victor-wang Put all URLs you want to get in a list.
Write a method which takes next URL from that list and sends a request.
Call this method in your button slot.
In the finished() slot you call this method again after handling current response if the list is not empty.

[victor wang]

@jsulm
Sorry it is too abstract for me,
Did you have an example?

[jsulm]

@victor-wang No, I don't have an example.
What is abstract here? I gave you a quite complete description.
What exactly is not clear?

[victor wang]

@jsulm
I don't know how to do it in the list and give a request.
I assume that i had a method function called getUrl();
And i will called it in the button.
When the replyFinished() slot is called from button.
Then i will call getUrl() again in the replyFinished() slot.

I this what you mean?

[jsulm]

@victor-wang

//In your class:
QList<QString> list;

// In your button slot
list << "URL1" << "URL2"<<...;
sendNextRequest();

void sendNextRequest()
{
    QString url = list.first();
    list.removeFirst();
    // Send request
}

// In your finished() slot
// Handle current request
...
if (list.size() > 0)
    sendNextRequest();

[victor wang]

@jsulm

Is the void sendNextRequest() able to put in the button slot?

When do i call my

manager->get(QNetworkRequest(QUrl(url)));

Is the finished() slot same as my replyFinished() slot?

[jsulm]

@victor-wang Yes, you call void sendNextRequest() in the button slot as any other method.
You call

manager->get(QNetworkRequest(QUrl(url)));

in void sendNextRequest() as I already said.
finished() signal is same except for these two lines (as I already said):

if (list.size() > 0)
    sendNextRequest();

[victor wang]

@jsulm

Thank you i had solve the problem
Thank you so much!!!!