Java Swing将文件加载到JEditorPane中 [英] Java Swing load file into JEditorPane

问题描述

我正在尝试用Java/Swing编写文本编辑器类型的应用程序.我有FileChooser，并且可以将文件内容打印到控制台.我想将文件加载到JEditorPane

I'm trying to write text-editor type application in Java/Swing. I have the FileChooser working and I can print out the contents of the file to the console. I want to load the file into a JEditorPane

当我调用setText()时，它将更新文本的值(我可以打印getText的结果，但实际的EditorPane不会刷新).我尝试在封装JScrollPane的JEditorPane上调用repaint/revalidate，但是没有什么可以将文本刷新为我发送给setText的内容.

When I call setText(), it updates the value of the text (I can print the result of getText, but the actual EditorPane is not refreshing). I've tried calling repaint/revalidate on the JEditorPane, the encapsulating JScrollPane but nothing will refresh the text to what I sent to setText.

我想念什么吗?

P.S. JEdi​​torPane包装在JScrollPane中，我的mainEditor中有一个将字符串传递给JEditorPane的setText方法的方法.

P.S. The JEditorPane is wrapped inside a JScrollPane, and I have a method in my mainEditor that passes the string to the setText method of the JEditorPane.

      if (r == JFileChooser.APPROVE_OPTION) 
      {
          FileInputStream fis;
          BufferedReader br;
          try
            {
                fis = new FileInputStream( 
                      chooser.getSelectedFile() ) ;
                br  = new BufferedReader( 
                      new InputStreamReader( fis ) ) ;
                String read ;
                StringBuffer text = new StringBuffer() ;
                while( ( read = br.readLine() ) != null ) 
                {
                   text.append( read ).append( "\n" ) ;
                }
                Main.frame.mainEditor.setText( text.toString() ) ;
                Main.frame.mainEditor.revalidate();
            }
            catch( IOException e1 ) 
            {
                JOptionPane.showMessageDialog( this , 
                    "Error in File Operation" ,
                    "Error in File Operation" , 
                    JOptionPane.INFORMATION_MESSAGE) ;
            }             
      }

推荐答案

将String形成为File引用，将其转换为URL，然后调用

Form the String into a File reference, convert that to an URL then call setPage(URL).

有关示例，请参见此处.

这篇关于Java Swing将文件加载到JEditorPane中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！