关于JAVA使用socket传输带格式(颜色，字体)文本的若干思考
假设socket设置字体传输到客户端
1，开始希望使用对象传递：创建3个类，Client，Server，SetFont，最后一个类是用来设置字体。在Client设置字体时产生一个对象，调用对象的方法设置字体；在Server类中接收Client类传过来的设置字体对象。这个思路的关键是使用socket传递对象。我使用的是函数返回对象，没有实现。
??? if (e.getSource() == ft) {
??? ??? ??? setfont = new SetFont(this, "字体设置", true);
??? ??? ??? setfont.setVisible(true);
??? ??? ??? ta.setFont(setfont.myFont);
??? ??? ??? tf.setFont(setfont.myFont);
String []s1={"黑色","红色","蓝色"};cb1.addItemListener(new ItemListener(){public void itemStateChanged(ItemEvent e){if(cb1.getSelectedItem().equals("红色")){flag1=1;}else{if(cb1.getSelectedItem().equals("蓝色")){flag1=2;}else{flag1=0;}}}});b3.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){e.getSource();if(flag2==1){try{LineNumberReader br=new LineNumberReader(new FileReader("123.txt"));String str2;String str3="";for(str2=br.readLine();str2!=null;str2=br.readLine()){str3=str3+"\n"+str2;} DatagramSocket dataSocket = new DatagramSocket(10000); byte [] sendDataByte = new byte[1024]; sendDataByte=(("r"+str3).getBytes()); DatagramPacket dataPacket = new DatagramPacket(sendDataByte, sendDataByte.length, InetAddress.getByName("localhost"), 10002); dataSocket.send(dataPacket); dataSocket.close();//System.out.print(str3);}catch(IOException e2){e2.printStackTrace();}flag2=0;}else{ try { DatagramSocket dataSocket = new DatagramSocket(10000); byte [] sendDataByte = new byte[1024]; if(flag1==0){ sendDataByte =("abc"+tb.getText()).getBytes(); insertDocument("你："+tb.getText()+"\n", Color.BLACK); } else if(flag1==1){ sendDataByte =("bcd"+tb.getText()).getBytes(); insertDocument("你："+tb.getText()+"\n", Color.RED); } else{ sendDataByte =("def"+tb.getText()).getBytes(); insertDocument("你："+tb.getText()+"\n", Color.BLUE); } DatagramPacket dataPacket = new DatagramPacket(sendDataByte, sendDataByte.length, InetAddress.getByName("localhost"), 10002); dataSocket.send(dataPacket); dataSocket.close(); } catch (Exception er) { er.printStackTrace(); } tb.setText("");}}});JP2.add(b3);c.add(JP2);app.setVisible(true);try { DatagramSocket dataSocket = new DatagramSocket(10001); byte []receiveByte = new byte[1024]; DatagramPacket dataPacket = new DatagramPacket(receiveByte, receiveByte.length); int i=0;while (i == 0) { dataSocket.receive(dataPacket); i = dataPacket.getLength(); if (i > 0) { String receiveStr = null;String s=null;String ss=null;receiveStr = new String(receiveByte, 3, dataPacket.getLength()-3); s= new String(receiveByte, 0, 3);ss=new String(receiveByte, 0, 1);if(ss.equals("r")){try{String h=new String(receiveByte, 1, dataPacket.getLength()-1);FileWriter f=new FileWriter("asd.txt");f.write(h);f.close();}catch(IOException e1){e1.printStackTrace();}}else{if(s.equals("abc"))insertDocument("朋友："+receiveStr+"\n",Color.BLACK);elseif(s.equals("bcd"))insertDocument("朋友："+receiveStr+"\n",Color.RED);elseinsertDocument("朋友："+receiveStr+"\n",Color.BLUE);i = 0;}}if(i==-1)dataSocket.close();} } catch (Exception e) { e.printStackTrace(); }}?3，将信息进行RTF编码进行读写
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