JTextPane不会转到新行？ [英] JTextPane does not go to a new line?

问题描述

我在JTextPanel中显示RSS提要。显示的结果不会转到新行。我如何在JTextPane中插入\\\
？谢谢！

writeNews class：

$ p $ public String writeNews（）
{
String result =;

尝试
{
DocumentBuilder builder = DocumentBuilderFactory.newInstance（）。newDocumentBuilder（）;
网址u =新网址（http://thestar.com.my.feedsportal.com/c/33048/f/534600/index.rss）;

Document doc = builder.parse（u.openStream（））;
NodeList nodes = doc.getElementsByTagName（item）;

for（int i = 0; i< nodes.getLength（）; i ++）
{
Element element =（Element）nodes.item（i）;

result + =\\\
Title：+ getElementValue（element，title）;
result + =\\\
Link：+ getElementValue（element，link）;
result + =\ nPublish Date：+ getElementValue（element，pubDate）;
result + =\\\
Description：+ getElementValue（element，description）;

System.out.println（Title：+ getElementValue（element，title））;
System.out.println（Link：+ getElementValue（element，link））;
System.out.println（Publish Date：+ getElementValue（element，pubDate））;
System.out.println（Description：+ getElementValue（element，description））;
System.out.println（）;



$ b catch（Exception ex）
{
ex.printStackTrace（）;
}

返回结果;
}


结果显示在一个简单的JTextPane中：

  public void news（）
 {
 news = new JPanel（new GridLayout（））; 
 news.setBackground（SystemColor.inactiveCaptionBorder）; 
 
 JTextPane newsTextPane = new JTextPane（）; 
 newsTextPane.setContentType（text / html）; 
 newsTextPane.setEditable（false）; 
 
 JScrollPane scrollPane = new JScrollPane（newsTextPane）; 
 news.add（scrollPane）; 
 
 TextSamplerDemo reader = TextSamplerDemo.getInstance（）; 
 reader.writeNews（）; 
 
 String rssNews = reader.writeNews（）; 
 newsTextPane.setText（rssNews）; 
 
 
  

JTextPane查看：

控制台视图：

解决方案

一个可能的解决方法，

  import javax.swing.JFrame; 
 import javax.swing.JScrollPane; 
 import javax.swing.JTextPane; 
 
 public class TestLineBreak {
 
 public static void main（String [] args）{
 StringBuilder sb = new StringBuilder（）; 
 for（int i = 0; i <10; i ++）{
 sb.append（Text goes here< br>）; //<峰; br>标记插入换行符
} 
 JFrame frame = new JFrame（）; 
 frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）; 
 JTextPane newsTextPane = new JTextPane（）; 
 newsTextPane.setContentType（text / html）; 
 newsTextPane.setEditable（false）; 
 newsTextPane.setText（sb.toString（））; 
 
 JScrollPane scrollPane = new JScrollPane（newsTextPane）; 
 frame.add（scrollPane）; 
 frame.setSize（300，200）; 
 frame.setVisible（true）; 
} 
} 
  

I'm displaying RSS feed in my JTextPanel. Result displayed doesn't go to a new line. How can I insert \n in JTextPane? Thanks!

writeNews class:

 public String writeNews() 
        {
            String result = "";

            try 
        {               
            DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
            URL u = new URL("http://thestar.com.my.feedsportal.com/c/33048/f/534600/index.rss"); 

            Document doc = builder.parse(u.openStream());
            NodeList nodes = doc.getElementsByTagName("item");

            for(int i=0;i<nodes.getLength();i++) 
            {                
                Element element = (Element)nodes.item(i);           

                result += "\nTitle: " + getElementValue(element,"title");               
                result += "\nLink: " + getElementValue(element,"link");
                result += "\nPublish Date: " + getElementValue(element,"pubDate");
                result += "\nDescription: " + getElementValue(element,"description");

                System.out.println("Title: " + getElementValue(element,"title"));
                System.out.println("Link: " + getElementValue(element,"link"));
                System.out.println("Publish Date: " + getElementValue(element,"pubDate"));
                System.out.println("Description: " + getElementValue(element,"description"));
                System.out.println();

            }
        }

        catch(Exception ex) 
        {
            ex.printStackTrace();
        }

        return result;
    }

And the result are displayed on a simple JTextPane:

public void news()
    {
        news = new JPanel(new GridLayout());
        news.setBackground(SystemColor.inactiveCaptionBorder);

        JTextPane newsTextPane = new JTextPane(); 
        newsTextPane.setContentType("text/html");
        newsTextPane.setEditable(false); 

        JScrollPane scrollPane = new JScrollPane(newsTextPane);     
        news.add(scrollPane);   

        TextSamplerDemo reader = TextSamplerDemo.getInstance();
        reader.writeNews();             

        String rssNews = reader.writeNews();
        newsTextPane.setText(rssNews);

    }

JTextPane View:

Console View:

解决方案

Here is a possible workaround,

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;

public class TestLineBreak {

    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 10; i++) {
            sb.append("Text goes here <br>"); //<br> tag to insert line breaks
        }
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JTextPane newsTextPane = new JTextPane();
        newsTextPane.setContentType("text/html");
        newsTextPane.setEditable(false);
        newsTextPane.setText(sb.toString());

        JScrollPane scrollPane = new JScrollPane(newsTextPane);
        frame.add(scrollPane);
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
} 

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