用javascript编撰swing程序

用javascript编写swing程序

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();
????????}
????}
}

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);
}?

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。