BYR Achieve · 镜像论坛

盼大牛告诉我这是嘛错误？

2010/2/3镜像同步15 回复

运行后错误如下： java.lang.ClassCastException: javax.swing.JTable$1 cannot be cast to javax.swing.table.DefaultTableModel at mhs.RSS.actionPerformed(RSS.java:90) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) 程序代码如下： import javax.swing.*; import javax.swing.event.*; import javax.swing.table.*; import java.util.*; import java.awt.*; import java.awt.event.*; import java.net.URL; import java.util.List; import java.util.*; import java.text.SimpleDateFormat; import com.sun.syndication.feed.synd.SyndCategory; import com.sun.syndication.feed.synd.SyndContent; import com.sun.syndication.feed.synd.SyndEnclosure; import com.sun.syndication.feed.synd.SyndEntry; import com.sun.syndication.feed.synd.SyndFeed; import com.sun.syndication.io.SyndFeedInput; import com.sun.syndication.io.XmlReader; public class RSS extends Frame implements ActionListener { JLabel RSS = new JLabel("RSS:"); JTextField URL = new JTextField(); JButton JB= new JButton("确认"); Object[][]tablevalue = new Object[20][4]; String []name={"标题","作者","时间","摘要"}; JTable table = new JTable(tablevalue,name); public RSS() { this.setTitle("欢迎使用RSS阅读器"); RSS.setBounds(100,570,60,60); this.add(RSS); URL.setBounds(170,570,400,50); this.add(URL); JB.setBounds(620,570,70,50); this.add(JB); JB.addActionListener(this); table.setBounds(40,150,720,500); TableColumn Column0 = table.getColumnModel().getColumn(0); Column0.setPreferredWidth(80); TableColumn Column1 = table.getColumnModel().getColumn(1); Column1.setPreferredWidth(60); TableColumn Column2 = table.getColumnModel().getColumn(2); Column2.setPreferredWidth(60); TableColumn Column3 = table.getColumnModel().getColumn(3); Column3.setPreferredWidth(400); table.setRowHeight(25); this.add(new JScrollPane(table)); this.setBounds(100,200,800,700); this.setVisible(true); addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e) { System.exit(0); } }); } public static void main(String args[]) { new RSS(); } @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(e.getSource()==JB) { try { //URL url = new URL(RSS.getText()); URL.setText("http://rss.sina.com.cn/ent/hot_roll.xml"); URL url = new URL(URL.getText()); XmlReader reader = new XmlReader(url); SyndFeedInput input = new SyndFeedInput(); DefaultTableModel model = (DefaultTableModel)table.getModel(); //就是这句出问题了，大牛，怎么改啊 SyndFeed feed = input.build(reader); List entries = feed.getEntries(); for (int i = 0; i < entries.size(); i++) { String[] arr=new String[4]; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); SyndEntry entry = (SyndEntry) entries.get(i); arr[0]=entry.getTitle(); arr[1]=entry.getAuthor(); arr[2]=sdf.format(entry.getPublishedDate()); SyndContent description = entry.getDescription(); arr[3]=description.getValue(); model.addRow(arr); } table.invalidate(); } catch (Exception error) { error.printStackTrace(); } } } }

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