在QT上可以使用QML语言来描述界面，而QML使用的脚本语言是javascript，不过咱们做java程序的也能使用javascript来开发
swing的界面。在jdk1.6中已经带有Mozilla Rhino 的 JavaScript 脚本引擎，下面用javascript编写上一编基于邮件服务器的聊天测试http://www.blogjava.net/pengo/archive/2010/12/11/340303.html
?界面。
先在程序要指定要解析的脚本，Main.java
import
?java.io.FileInputStream;
import ?java.io.InputStreamReader;
import ?javax.script.Invocable;
import ?javax.script.ScriptEngine;
import ?javax.script.ScriptEngineManager;
import ?javax.swing.UIManager;
public ? class ?Main?{
???? public ? static ? void ?main(String[]?args)?{
???????? try ?{
????????????UIManager
????????????????????.setLookAndFeel( " com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel " );
????????????ScriptEngineManager?factory? = ? new ?ScriptEngineManager();
???????????? // ?指定脚本语言为javascript，engine支持很多种脚本语言
????????????ScriptEngine?engine? = ?factory.getEngineByName( " JavaScript " );
???????????? // ?告诉脚本引擎需要加载的脚本代码
????????????InputStreamReader?in? = ? new ?InputStreamReader( new ?FileInputStream(
???????????????????? " test.js " ));
????????????engine.eval(in);
????????????Invocable?inv? = ?(Invocable)?engine;
????????????inv.invokeFunction( " main " );
????????}? catch ?(Exception?e)?{
????????????e.printStackTrace();
????????}
????}
}
import ?java.io.InputStreamReader;
import ?javax.script.Invocable;
import ?javax.script.ScriptEngine;
import ?javax.script.ScriptEngineManager;
import ?javax.swing.UIManager;
public ? class ?Main?{
???? public ? static ? void ?main(String[]?args)?{
???????? try ?{
????????????UIManager
????????????????????.setLookAndFeel( " com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel " );
????????????ScriptEngineManager?factory? = ? new ?ScriptEngineManager();
???????????? // ?指定脚本语言为javascript，engine支持很多种脚本语言
????????????ScriptEngine?engine? = ?factory.getEngineByName( " JavaScript " );
???????????? // ?告诉脚本引擎需要加载的脚本代码
????????????InputStreamReader?in? = ? new ?InputStreamReader( new ?FileInputStream(
???????????????????? " test.js " ));
????????????engine.eval(in);
????????????Invocable?inv? = ?(Invocable)?engine;
????????????inv.invokeFunction( " main " );
????????}? catch ?(Exception?e)?{
????????????e.printStackTrace();
????????}
????}
}
test.js脚本代码
importPackage(javax.swing);
importPackage(javax.swing.border);
importPackage(java.awt.event);
importClass(java.lang.System);
var?contentPane;
var?messagePane;
var?sentPane;
var?button_1;
function?main(){
????var?frame? = ? new ?JFrame();
????frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
????frame.setBounds( 100 ,? 100 ,? 542 ,? 506 );
????contentPane? = ? new ?JPanel();
????contentPane.setBorder( new ?EmptyBorder( 5 ,? 5 ,? 5 ,? 5 ));
????frame.setContentPane(contentPane);
????contentPane.setLayout( null );
????
????messagePane? = ? new ?JTextPane();
????messagePane.setContentType( " text/html " );
????messagePane.setEditable( false );
????var?scrollPane1? = ? new ?JScrollPane(messagePane);
????scrollPane1.setBounds( 10 ,? 10 ,? 506 ,? 290 );
????contentPane.add(scrollPane1);
????
????sentPane? = ? new ?JEditorPane();
????var?scrollPane? = ? new ?JScrollPane(sentPane);
????scrollPane.setBounds( 10 ,? 320 ,? 506 ,? 110 );
????contentPane.add(scrollPane);
????var?button? = ? new ?JButton( " 关闭 " );
????button.addActionListener(
???????????? new ?JavaAdapter(
????????????????????ActionListener,?{
????????????????????????actionPerformed?:?function(event){
????????????????????????????System.exit( 0 );
????????????????????????}
????????????????????}
????????????)
????);
????button.setBounds( 388 ,? 435 ,? 58 ,? 27 );
????contentPane.add(button);
????
????button_1? = ? new ?JButton( " 发送 " );
????button_1.setEnabled( false );
????
????button_1.setBounds( 458 ,? 435 ,? 58 ,? 27 );
????contentPane.add(button_1);
????
????var?button_2? = ? new ?JButton( " 配置 " );
????button_2.setBounds( 10 ,? 431 ,? 52 ,? 30 );
????contentPane.add(button_2);
????
????var?button_3? = ? new ?JButton( " 登录 " );
????button_3.setBounds( 69 ,? 433 ,? 52 ,? 30 );
????contentPane.add(button_3);
????
????frame.setVisible( true );
}?
importPackage(javax.swing.border);
importPackage(java.awt.event);
importClass(java.lang.System);
var?contentPane;
var?messagePane;
var?sentPane;
var?button_1;
function?main(){
????var?frame? = ? new ?JFrame();
????frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
????frame.setBounds( 100 ,? 100 ,? 542 ,? 506 );
????contentPane? = ? new ?JPanel();
????contentPane.setBorder( new ?EmptyBorder( 5 ,? 5 ,? 5 ,? 5 ));
????frame.setContentPane(contentPane);
????contentPane.setLayout( null );
????
????messagePane? = ? new ?JTextPane();
????messagePane.setContentType( " text/html " );
????messagePane.setEditable( false );
????var?scrollPane1? = ? new ?JScrollPane(messagePane);
????scrollPane1.setBounds( 10 ,? 10 ,? 506 ,? 290 );
????contentPane.add(scrollPane1);
????
????sentPane? = ? new ?JEditorPane();
????var?scrollPane? = ? new ?JScrollPane(sentPane);
????scrollPane.setBounds( 10 ,? 320 ,? 506 ,? 110 );
????contentPane.add(scrollPane);
????var?button? = ? new ?JButton( " 关闭 " );
????button.addActionListener(
???????????? new ?JavaAdapter(
????????????????????ActionListener,?{
????????????????????????actionPerformed?:?function(event){
????????????????????????????System.exit( 0 );
????????????????????????}
????????????????????}
????????????)
????);
????button.setBounds( 388 ,? 435 ,? 58 ,? 27 );
????contentPane.add(button);
????
????button_1? = ? new ?JButton( " 发送 " );
????button_1.setEnabled( false );
????
????button_1.setBounds( 458 ,? 435 ,? 58 ,? 27 );
????contentPane.add(button_1);
????
????var?button_2? = ? new ?JButton( " 配置 " );
????button_2.setBounds( 10 ,? 431 ,? 52 ,? 30 );
????contentPane.add(button_2);
????
????var?button_3? = ? new ?JButton( " 登录 " );
????button_3.setBounds( 69 ,? 433 ,? 52 ,? 30 );
????contentPane.add(button_3);
????
????frame.setVisible( true );
}?
运行效果：
效果还是跟以前一样帅，
只要把规则定义好，java（swing/swt）程序也可以像QT一样，定义一套类似QML的界面描述语言，方便开发中的界面设计。