教你用JAVA写文本编辑器(四)

@Override
 public void actionPerfORMed(ActionEvent e) {
  if (e.getSource() == item_about) {
   new about_Window();
  }else if (e.getSource() == item_Word_format) {
   new about_Format();
  }else if (e.getSource() == item_new) {
   new test5(); // 选中新建 new一个新窗口 ，有bug，关闭任意子窗口父窗口也会跟着关闭
  }else if (e.getSource() == item_exit) {
   this.dispose();
  }
 }

@Override
	public void actionPerformed(ActionEvent e) {
		if (e.getSource() == item_about) {
			new about_Window();
		}else if (e.getSource() == item_word_format) {
			new about_Format();
		}else if (e.getSource() == item_new) {
			new test5(); // 选中新建 new一个新窗口 ，有bug，关闭任意子窗口父窗口也会跟着关闭
		}else if (e.getSource() == item_exit) {
			this.dispose();
		}else if (e.getSource() == item_open) {
			openFile();
		}else if (e.getSource() == item_save) {
			saveFile();
		}
	}

private void saveFile() {
		File file = null;
		int result ;
		fileChooser = new JFileChooser("C:\\");
		fileChooser.setApproveButtonToolTipText("保存"); // 设置确认按钮的现实文本
		fileChooser.setDialogTitle("保存文件"); // 设置title
		result = fileChooser.showOpenDialog(rootPane); // 设置Dialog的根View 根布局
		
		//--------------------------------------------------------------------------
		if(result == JFileChooser.APPROVE_OPTION) {
			file = fileChooser.getSelectedFile(); // 若点击了确定按钮，给file填文件路径
		}
		
		//--------------------------------------------------------------------------
		
		//---------------这里有严重bug，对于字符写入文件没问题，但是在读取中文字符的时候会出现乱码-----------
		//--------------------------------------------------------------------------
		
		try{
			OutputStreamWriter write = new OutputStreamWriter(new FileOutputStream(file),"UTF-8"); // 对字符进行编码转换
			BufferedWriter writer = new BufferedWriter(write);
			String content = edit_text_area.getText();
			writer.write(content);
			writer.close();
		}catch(IOException e) {
			e.printStackTrace();
		}
		
		
	}

	private void openFile() {
		File file = null;
		int result ;
		fileChooser = new JFileChooser("C:\\");
		fileChooser.setApproveButtonToolTipText("确定"); // 设置确认按钮的现实文本
		fileChooser.setDialogTitle("打开文件"); // 设置title
		result = fileChooser.showOpenDialog(rootPane); // 设置Dialog的根View 根布局
		
		//--------------------------------------------------------------------------
		if(result == JFileChooser.APPROVE_OPTION) {
			file = fileChooser.getSelectedFile(); // 若点击了确定按钮，给file填文件路径
		}
		
		//--------------------------------------------------------------------------
		//--------------------下面对文件进行处理，把内容装到父窗体的textarea中--------------------
		
		//---------------这里有严重bug，对于读取中文字符会出现乱码-------------------------------
		//--------------------------------------------------------------------------
		
		if(file.isFile() && file.exists()) {
			BufferedReader reader = null;
			try {
				InputStreamReader inputStreamReader = new InputStreamReader(new FileInputStream(file),"UTF-8");
				reader = new BufferedReader(inputStreamReader);
				
				String readLine = "";
				while ((readLine = reader.readLine()) != null) { // 对BufferedReader数据一行行读
					//edit_text_area.append(readLine); 这样写会出现所有的句子都出现在同一行的情况，所以在每次append的时候在后面加一个换行符
					edit_text_area.append(readLine+'\n');  //对edit_text_area 一行行加
				}
				
				reader.close(); // 关闭reader
				
			}catch (IOException e) {
				e.printStackTrace();
				//TipDialog tmpDialog = new TipDialog(this,"错误文件",true,"文件夹名称错误，请重新检查!");
			}
			
			
		}
	}