本文介绍了一个使用Java调用JavaScript来创建图形用户界面的方法。通过整合Java的Swing库和JavaScript引擎，实现了一个基本的GUI应用，展示了如何在Java环境中加载并执行JavaScript脚本文件。
原文地址：
http://www.blogjava.net/pengo/archive/2010/12/25/341513.html
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);
}
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