使用 PyQt5 将多个 HTML 文件转换为 PDF

Question

我尝试遵循这个答案：How to use PyQT5 to convert multiple HTML docs to PDF in one loop

我对其进行了修改以转换在本地文件夹中找到的所有 html 文件。例如htmls是要转换的html文件列表：[Q:\Ray\test1.html, Q:\Ray\prac2.html]

这是代码。但是，当我尝试运行它时，Python 会冻结，我必须停止运行。

import os
import glob
from PyQt5 import QtWidgets, QtWebEngineWidgets

class PdfPage(QtWebEngineWidgets.QWebEnginePage):
    def __init__(self):
        super().__init__()
        self._htmls = []
        self._current_path = ""

        self.setZoomFactor(1)
        self.loadFinished.connect(self._handleLoadFinished)
        self.pdfPrintingFinished.connect(self._handlePrintingFinished)

    def convert(self, htmls):
        self._htmls = iter(zip(htmls))
        self._fetchNext()

    def _fetchNext(self):
        try:
            self._current_path = next(self._htmls)
        except StopIteration:
            return False

    def _handleLoadFinished(self, ok):
        if ok:
            self.printToPdf(self._current_path)

    def _handlePrintingFinished(self, filePath, success):
        print("finished:", filePath, success)
        if not self._fetchNext():
            QtWidgets.QApplication.quit()


if __name__ == "__main__":

    current_dir = os.path.dirname(os.path.realpath(__file__))
    folder= current_dir+ '\\*.HTML'
    htmls= glob.glob(folder)

    app = QtWidgets.QApplication([])
    page = PdfPage()
    page.convert(htmls)
    app.exec_()

    print("finished")

Answer 1

看来OP还没有理解我之前解决方案的逻辑，即：

1. 获取资源，在本例中为文件，
2. 在页面上加载，
3. 加载完成后打印页面内容，
4. 打印完成后，使用下一个资源执行步骤 1。

这里不执行第2步，另一方面建议pdf的路径使用html以外的名称

import os
import glob
from PyQt5.QtCore import QUrl
from PyQt5 import QtWidgets, QtWebEngineWidgets


class PdfPage(QtWebEngineWidgets.QWebEnginePage):
    def __init__(self):
        super().__init__()
        self._htmls = []
        self._current_path = ""

        self.setZoomFactor(1)
        self.loadFinished.connect(self._handleLoadFinished)
        self.pdfPrintingFinished.connect(self._handlePrintingFinished)

    def convert(self, htmls):
        self._htmls = iter(htmls)
        self._fetchNext()

    def _fetchNext(self):
        try:
            self._current_path = next(self._htmls)
        except StopIteration:
            return False
        else:
            self.load(QUrl.fromLocalFile(self._current_path))
        return True

    def _handleLoadFinished(self, ok):
        if ok:
            self.printToPdf(self._current_path + ".pdf")

    def _handlePrintingFinished(self, filePath, success):
        print("finished:", filePath, success)
        if not self._fetchNext():
            QtWidgets.QApplication.quit()


if __name__ == "__main__":

    current_dir = os.path.dirname(os.path.realpath(__file__))
    folder= current_dir+ '\\*.HTML'
    htmls = glob.glob(folder)
    print(htmls)
    if htmls:
        app = QtWidgets.QApplication([])
        page = PdfPage()
        page.convert(htmls)
        app.exec_()
    print("finished")