通过 iText 和 XMLWorker 使用波兰语字母将 HTML 转换为 PDF

Question

我有一个带有示例的字符串 - 它非常有用，但是当我添加波兰语字母时，它们就不见了。我试过这样的事情：

        byte[] byteArray = str.getBytes(Charset.forName("UTF-8"));
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray);
        worker.parseXHtml(pdfWriter, document, byteArrayInputStream, Charset.forName("UTF-8"));

但这并没有改变任何东西。如何添加波兰语字母？

编辑：它仍然不起作用。

代码：

        document.open();

        XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
        String str = "<html><head></head><body style=\"font-size:12.0pt; font-family:Times New Roman\">"+
                "<a href='http://www.rgagnon.com/howto.html'><b>Real's HowTo</b></a>" +
                "<h1>Show your support</h1>" +
                "<p>It DOES cost a lot to produce this site - in ISP storage and transfer fees</p>" +
                "<p>TEST POLSKICH ZNAKÓW: ĄąćCÓóŁłŻżŹźĘę</p>" +
                "<hr/>" +
                "<p>the huge amounts of time it takes for one person to design and write the actual content.</p>" +
                "<p>If you feel that effort has been useful to you, perhaps you will consider giving something back?</p>" +
                "<p>Donate using PayPalŽ</p>" +
                "<p>Contributions via PayPal are accepted in any amount</p>" +
                "<p><br/><table border='1'><tr><td>Java HowTo</td></tr><tr>" +
                "<td style='background-color:red;'>Javascript HowTo</td></tr>" +
                "<tr><td>Powerbuilder HowTo</td></tr></table></p>" +
                "</body></html>";

        byte[] byteArray = str.getBytes(Charset.forName("UTF-8"));
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray);
        worker.parseXHtml(pdfWriter, document, byteArrayInputStream, Charset.forName("UTF-8"));

        document.close();

也许有人会发现一个错误。

Answer 1

我已经使用了你的样本 HTML 并用它来创建 ParseHtml2 example. The resulting PDF, html_2.pdf，看起来像这样：

乍一看，我没有发现波兰语字符有任何问题。

我使用的代码如下所示：

public void createPdf(String file) throws IOException, DocumentException {
    // step 1
    Document document = new Document();
    // step 2
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file));
    // step 3
    document.open();
    // step 4
    String str = "<html><head></head><body style=\"font-size:12.0pt; font-family:Times New Roman\">"+
            "<a href='http://www.rgagnon.com/howto.html'><b>Real's HowTo</b></a>" +
            "<h1>Show your support</h1>" +
            "<p>It DOES cost a lot to produce this site - in ISP storage and transfer fees</p>" +
            "<p>TEST POLSKICH ZNAKÓW: \u0104\u0105\u0106\u0107\u00d3\u00f3\u0141\u0142\u0179\u017a\u017b\u017c\u017d\u017e\u0118\u0119</p>" +
            "<hr/>" +
            "<p>the huge amounts of time it takes for one person to design and write the actual content.</p>" +
            "<p>If you feel that effort has been useful to you, perhaps you will consider giving something back?</p>" +
            "<p>Donate using PayPal\u017d</p>" +
            "<p>Contributions via PayPal are accepted in any amount</p>" +
            "<p><br/><table border='1'><tr><td>Java HowTo</td></tr><tr>" +
            "<td style='background-color:red;'>Javascript HowTo</td></tr>" +
            "<tr><td>Powerbuilder HowTo</td></tr></table></p>" +
            "</body></html>";

    XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
    InputStream is = new ByteArrayInputStream(str.getBytes(StandardCharsets.UTF_8));
    worker.parseXHtml(writer, document, is, Charset.forName("UTF-8"));
    // step 5
    document.close();
}

请注意，您已将 Times New Roman 定义为字体。您的 OS 必须能够访问具有该名称的字体，否则您最终还是会使用 Helvetica。

另请注意，在源代码中使用非 ASCII 字符被视为有损品位的犯罪行为。源代码存储为文本文件，但使用哪种编码？无法保证您的文件将存储为 UTF-8，无法保证编译器会将其读取为 UTF-8，无法保证版本控制系统会接受 UTF-8，...因此我更换了所有 UTF-8 字符的 unicode 值允许我将源文件保存在 ASCII 中。

Answer 2

我采用了 Bruno 示例 HTML 并为 C# 用户更改了该函数。我使用 PdfFileName 作为属性来获取和设置文件名。

    public string PdfFileName { get; set; }
    public void CreatePdf()
    {
        // replace this code with you full pdf name which you want to create
        PdfFileName = EU.Master_Data_Utility.obj.Get_Current_DateTimeInteger(_connFlag) + ".pdf"; 

        String str = "<html><head></head><body style=\"font-size:12.0pt; font-family:Times New Roman\">" +
                "<a href='http://www.rgagnon.com/howto.html'><b>Real's HowTo</b></a>" +
                "<h1>Show your support</h1>" +
                "<p>It DOES cost a lot to produce this site - in ISP storage and transfer fees</p>" +
                "<p>TEST POLSKICH ZNAKÓW: \u0104\u0105\u0106\u0107\u00d3\u00f3\u0141\u0142\u0179\u017a\u017b\u017c\u017d\u017e\u0118\u0119</p>" +
                "<hr/>" +
                "<p>the huge amounts of time it takes for one person to design and write the actual content.</p>" +
                "<p>If you feel that effort has been useful to you, perhaps you will consider giving something back?</p>" +
                "<p>Donate using PayPal\u017d</p>" +
                "<p>Contributions via PayPal are accepted in any amount</p>" +
                "<p><br/><table border='1'><tr><td>Java HowTo</td></tr><tr>" +
                "<td style='background-color:red;'>Javascript HowTo</td></tr>" +
                "<tr><td>Powerbuilder HowTo</td></tr></table></p>" +
                "</body></html>";

        StringReader sr = new StringReader(str.ToString());
        Document doc = new Document(PageSize.A4, 10f, 10f, 10f, 10f);
        PdfWriter pdfWriter = PdfWriter.GetInstance(doc, new FileStream(Server.MapPath(PdfFileName), FileMode.Create));
        doc.Open();
        XMLWorkerHelper.GetInstance().ParseXHtml(pdfWriter, doc, sr);
        doc.Close();
        // Created a new function to open created file
        OpenPDFFile();

    }
    protected void OpenPDFFile()
    {
        //Open the PDF file
        Process.Start(Server.MapPath(PdfFileName));
    }

通过 iText 和 XMLWorker 使用波兰语字母将 HTML 转换为 PDF

Convert HTML to PDF by iText & XMLWorker with Polish Letters

java

itext

xmlworker