| « | August 2025 | » | | 日 | 一 | 二 | 三 | 四 | 五 | 六 | | | | | | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | | | | | | | |
|
公告 |
戒除浮躁，读好书，交益友 |
| Blog信息 |
|
blog名称:邢红瑞的blog
日志总数:523
评论数量:1142
留言数量:0
访问次数:9694622
建立时间:2004年12月20日 |
| |
|
 [脚本语言]java里面使用javascript(四):使用java的类
原创空间, 软件技术, 电脑与网络
邢红瑞 发表于 2006/5/22 18:22:48 |
| 调用java类必须写全路径名var out = new java.lang.StringBuffer()package test;
/** * * @author hongrui xing */import javax.script.ScriptEngine;import javax.script.ScriptEngineManager;
public class ScriptingTester extends javax.swing.JFrame { /** Creates new form ScriptingTester */ public ScriptingTester() { initComponents(); input.setText("var out = new java.lang.StringBuffer();\nfor (i=0; i<3; i++)\n out.append('hello, world! ('+i+')\\n');"); } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ // <editor-fold defaultstate="collapsed" desc=" Generated Code "> private void initComponents() { java.awt.GridBagConstraints gridBagConstraints;
jLabel1 = new javax.swing.JLabel(); jButton1 = new javax.swing.JButton(); inputPane = new javax.swing.JScrollPane(); input = new javax.swing.JTextArea(); outputPane = new javax.swing.JScrollPane(); output = new javax.swing.JTextArea();
getContentPane().setLayout(new java.awt.GridBagLayout());
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setFocusable(false); jLabel1.setText("Scripting tester - press button to execute script"); gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.insets = new java.awt.Insets(5, 5, 5, 5); getContentPane().add(jLabel1, gridBagConstraints);
jButton1.setText("Script it!"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { scriptIt(evt); } });
gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.gridx = 0; gridBagConstraints.gridy = 2; gridBagConstraints.insets = new java.awt.Insets(6, 0, 6, 0); getContentPane().add(jButton1, gridBagConstraints);
input.setColumns(20); input.setRows(5); inputPane.setViewportView(input);
gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.gridx = 0; gridBagConstraints.gridy = 1; gridBagConstraints.insets = new java.awt.Insets(5, 0, 5, 0); getContentPane().add(inputPane, gridBagConstraints);
output.setColumns(20); output.setRows(5); outputPane.setViewportView(output);
gridBagConstraints = new java.awt.GridBagConstraints(); gridBagConstraints.gridx = 0; gridBagConstraints.gridy = 3; gridBagConstraints.insets = new java.awt.Insets(5, 0, 5, 0); getContentPane().add(outputPane, gridBagConstraints);
pack(); } // </editor-fold>
private void scriptIt(java.awt.event.ActionEvent evt) { // initiate ScriptEngineManager ScriptEngineManager manager = new ScriptEngineManager();
// return engine ScriptEngine jsengine = manager.getEngineByName("js");
// execute the script try { jsengine.eval(input.getText()); String out = new String((StringBuffer)jsengine.get("out")); output.setText(out); } catch (javax.script.ScriptException e) { output.setText("ScriptException" + e); } } /** * @param args the command line arguments */ public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new ScriptingTester().setVisible(true); } }); } // Variables declaration - do not modify private javax.swing.JTextArea input; private javax.swing.JScrollPane inputPane; private javax.swing.JButton jButton1; private javax.swing.JLabel jLabel1; private javax.swing.JTextArea output; private javax.swing.JScrollPane outputPane; // End of variables declaration } |
|
|