java.lang.IllegalArgumentException：必须为StyledEditorKit

Question

We are trying to render both HTML and plain text using JTextPane . Basically the actual content is hosted on remote server, this content can contain some degree of HTML tags or none at all. In my JTextPane I have it defined as shown:

 JTextPane jText = new JTextPane();
 jText.setEditable(false);
 jText.setContentType("text/html");
 String content = "Please view article <a href=mydomain.com/content.txt>Link..</a>";
 jText.setText(content);

And then using HyperlinkListener wants to be able to render the content when the link is clicked. I am doing so using the syntax below;

jText.addHyperlinkListener(new HyperlinkListener()
{
  public void hyperlinkUpdate(final HyperlinkEvent he)
  {
    //Render the page
    try{
     setPage(he.getURL()); //Error on this line
    }catch(Exception e){e.printStackTrace();}
  }
});

Unfurtunately when we click on the link to render the content, we end up with the exception:

java.lang.IllegalArgumentException: Must be StyledEditorKit
    at javax.swing.JTextPane.setEditorKit(JTextPane.java:474)
    at javax.swing.JEditorPane.setContentType(JEditorPane.java:888)
    at javax.swing.JEditorPane.getStream(JEditorPane.java:713)
    at javax.swing.JEditorPane.setPage(JEditorPane.java:408)

This looks like when the content has no HTML tag available. Can someone help us resolve this issue so we can render both plain text and HTML.

Thanks in advance.

EDITED.

Answer 1

It sounds like what you're saying is that since you want to support both HTML and plain-text from your JTextPane as input, then not receiving a URL isn't really considered a problem. In that case, you should consider logging/eating the exception:

jText.addHyperlinkListener(new HyperlinkListener()
{
  public void hyperlinkUpdate(final HyperlinkEvent he)
  {
    try {
      //Render the page
      setPage(he.getURL()); //Error on this line
    } catch (IllegalArgumentException e) {
      // either log the argument here, or just eat it and do nothing with it.  logger.error() recommended
    }
  }
});