java 通过 iText 和 XMLWorker 使用波兰字母将 HTML 转换为 PDF
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Convert HTML to PDF by iText & XMLWorker with Polish Letters
提问by KurdTt-
I've got a string with an example in it - it works really great, but when I'm adding polish letters, they're gone. I tried something like this:
我有一个带有示例的字符串 - 它的效果非常好，但是当我添加波兰语字母时，它们就消失了。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"));
but it doesn't change anything. How to add polish letters?
但它不会改变任何东西。如何添加波兰语字母？
EDIT: It still doesn't work.
编辑：它仍然不起作用。
Code:
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: ???Cóó????????</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?</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();
Maybe someone will find a bug.
也许有人会发现一个错误。
回答by Bruno Lowagie
I have taken your sample HTML and I have used it to create the ParseHtml2example. The resulting PDF, html_2.pdf, looks like this:
我已经采用了您的示例 HTML，并使用它来创建ParseHtml2示例。生成的 PDF html_2.pdf如下所示：
At first sight, I don't see any issues with the Polish characters.
乍一看，我认为波兰语字符没有任何问题。
The code I used looks like this:
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();
}
Note that you have defined Times New Romanas the font. It is essential that your OS has access to a font with that name, otherwise you'll still end up with Helvetica.
请注意，您已定义Times New Roman为字体。您的操作系统必须能够访问具有该名称的字体，否则您最终仍会使用 Helvetica。
Also be aware that using non-ASCII characters in source code is considered a crime against good taste. Source code is stored as a text file, but using which encoding? There is no guarantee that your file will be stored as UTF-8, there is no guarantee that a compiler will read it as UTF-8, there is no guarantee that a versioning system will accept UTF-8,... Hence I replaced all UTF-8 characters by their unicode value which allows me to keep the source file in ASCII.
另请注意，在源代码中使用非 ASCII 字符被视为违反品味的犯罪。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，也无法保证版本控制系统会接受 UTF-8，...因此我替换了所有 UTF-8 字符按其 unicode 值，这使我可以将源文件保存为 ASCII。
回答by Nitish Saini
I have taken Bruno sample HTML and changed that function for C# users. I am using PdfFileName as a property to get and set the file name.
我采用了 Bruno 示例 HTML 并为 C# 用户更改了该功能。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));
}
