java 从 JTextPane 获取原始文本
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原文地址: http://stackoverflow.com/questions/1859686/
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Getting raw text from JTextPane
提问by Romain Linsolas
In my application, I use a JTextPaneto display some log information. As I want to hightlight some specific lines in this text (for example the error messages), I set the contentTypeas "text/html". This way, I can format my text.
在我的应用程序中，我使用 aJTextPane来显示一些日志信息。由于我想突出显示本文中的某些特定行（例如错误消息），我将其设置contentType为“ text/html”。这样，我可以格式化我的文本。
Now, I create a JButton that copies the content of this JTextPaneinto the clipboard. That part is easy, but my problem is that when I call myTextPane.getText(), I get the HTML code, such as :
现在，我创建了一个 JButton，将它的内容复制JTextPane到剪贴板中。这部分很简单，但我的问题是，当我调用 时myTextPane.getText()，我得到了 HTML 代码，例如：
<html>
<head>
</head>
<body>
blabla<br>
<font color="#FFCC66"><b>foobar</b></font><br>
blabla
</body>
</html>
instead of getting only the raw content:
而不是只获取原始内容：
blabla
foobar
blabla
Is there a way to get only the content of my JTextPanein plain text? Or do I need to transform the HTML into raw text by myself?
有没有办法只获取我JTextPane的纯文本内容？还是我需要自己将 HTML 转换为原始文本？
采纳答案by jitter
Based on the accepted answer to: Removing HTML from a Java String
基于接受的答案：Removing HTML from a Java String
MyHtml2Text parser = new MyHtml2Text();
try {
parser.parse(new StringReader(myTextPane.getText()));
} catch (IOException ee) {
//handle exception
}
System.out.println(parser.getText());
Slightly modified version of the Html2Textclass found on the answer I linked to
Html2Text在我链接到的答案中找到的课程的略微修改版本
import java.io.IOException;
import javax.swing.text.html.*;
import javax.swing.text.html.parser.*;
public class MyHtml2Text extends HTMLEditorKit.ParserCallback {
StringBuffer s;
public MyHtml2Text() {}
public void parse(Reader in) throws IOException {
s = new StringBuffer();
ParserDelegator delegator = new ParserDelegator();
delegator.parse(in, this, Boolean.TRUE);
}
public void handleText(char[] text, int pos) {
s.append(text);
s.append("\n");
}
public String getText() {
return s.toString();
}
}
If you need a more fine-grained handling consider implementing more of the interface defined by HTMLEditorKit.ParserCallback
如果您需要更细粒度的处理，请考虑实现更多由 HTMLEditorKit.ParserCallback
回答by camickr
No need to use the ParserCallback. Just use:
无需使用 ParserCallback。只需使用：
textPane.getDocument().getText(0, textPane.getDocument().getLength()) );
回答by Nick Fortescue
You need to do it yourself unfortunately. Imagine if some of the contents was HTML specific, eg images - the text representation is unclear. Include alt text or not for instance.
不幸的是你需要自己做。想象一下，如果某些内容是特定于 HTML 的，例如图像 - 文本表示不清楚。例如，是否包括替代文字。
回答by Andreas Dolk
(Is RegExp allowed? This isn't parsing, isn't it)
（是否允许 RegExp？这不是解析，不是吗）
Take the getText() result and use String.replaceAll() to filter all tags. Than a trim() to remove leading and trailing whitespaces. For the whitespaces between your first and you last 'blabla' I don't see a general solution. Maybe you can spilt the rest around CRLF and trim all Strings again.
获取 getText() 结果并使用 String.replaceAll() 过滤所有标签。比 trim() 删除前导和尾随空格。对于第一个和最后一个 'blabla' 之间的空格，我没有看到通用的解决方案。也许您可以将其余部分洒在 CRLF 周围并再次修剪所有字符串。
(I'm no regexp expert - maybe someone can provide the regexp and earn some reputation ;) )
（我不是正则表达式专家 - 也许有人可以提供正则表达式并赢得一些声誉；））
Edit
编辑
.. I just assumed that you don't use <and >in your text - otherwise it.. say, it's a challenge.
.. 我只是假设你不在你的文本中使用<和>- 否则它......说，这是一个挑战。
