如何从 QProcess 获取 STDOUT?

问题描述

我以为我将使用以下代码从 QProcess 获取输出:

I thought I was going to get the output from a QProcess using the following code:

// Start the process
process.start(tr("php-cgi www/test.php"),QIODevice::ReadWrite);

// Wait for it to start
if(!process.waitForStarted())
    return 0;

// Continue reading the data until EOF reached
QByteArray data;

while(process.waitForReadyRead())
    data.append(process.readAll());

// Output the data
qDebug(data.data());
qDebug("Done!");

我期望看到程序的输出打印到调试控制台，但我看到的是:

What I am expecting is to see the output from the program printed to the debug console, but all I see is:

完成！

我知道:

• 程序启动正常，因为打印了最后的消息.
• 程序确实会打印输出，因为在终端中运行完全相同的命令会按预期生成一长串文本.

• The program is started fine, because the message at the end is printed.
• The program does print output because running the exact same command in the terminal produces a long string of text as expected.

我在这里做错了什么?

推荐答案

在开始流程调用之前:

process.setProcessChannelMode(QProcess::MergedChannels);

它会导致将所有内容(甚至 STDERR 输出)打印到 STDOUT 输出.

It will cause printing everything (even STDERR output) to STDOUT output.

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