Java Swing JTextField 搜索引擎 信息检索（源码）

package test; import java.awt.BorderLayout; import java.awt.event.FocusEvent; import java.awt.event.FocusListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.util.HashSet; import java.util.Iterator; import java.util.Set; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.event.DocumentEvent; import javax.swing.event.DocumentListener; import mode.StaMode; import mode.StaTable; import po.Sta; public class Test extends JFrame { private static final long serialVersionUID = 1L; private JTextField jtf; public static void main(String[] args) { new Test().setVisible(true); } StaMode tm; StaTable tb; public Test() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setSize(600, 400); setLocationRelativeTo(null); getContentPane().setLayout(null); jtf = new JTextField(); jtf.setBounds(69, 42, 240, 30); getContentPane().add(jtf); final JPanel p = new JPanel(); p.setBounds(69, 70, 240, 210); getContentPane().add(p); p.setLayout(new BorderLayout(0, 0)); tm = new StaMode(new HashSet<Sta>()); tb = new StaTable(tm); tb.setHiddenCell(0); tb.setRowHeight(20); tb.setTableHeader(null);//设置列名隐藏 JScrollPane scrollPane_1 = new JScrollPane(tb); p.add(scrollPane_1, BorderLayout.CENTER); JPanel panel_1 = new JPanel(); panel_1.setBounds(35, 96, 340, 50); getContentPane().add(panel_1); panel_1.setLayout(new BorderLayout(0, 0)); JScrollPane scrollPane = new JScrollPane(); panel_1.add(scrollPane, BorderLayout.CENTER); JTextArea textArea = new JTextArea(); scrollPane.setViewportView(textArea); textArea.setText("帝国大厦二十八楼装修的富丽堂皇的会议大厅内，" + "神情严肃的军委首长正在看大屏幕上花都市的地图，参加这次会议的人数并不多，" + "可全都是花都市政界的顶尖人物。" + "市委书记林一来也在看地图，旁边的市长张学锋低声说：" + "“林书记，这一次上边给我们的压力可称‘巨大’啊。"); textArea.setLineWrap(true); p.setVisible(false); ss = new HashSet<Sta>(); for (int i = 0; i < 1000; i++) { ss.add(new Sta(i, i + "")); } jtf.addFocusListener(new FocusListener() { public void focusLost(FocusEvent e) { p.setVisible(false); } public void focusGained(FocusEvent e) { } }); jtf.getDocument().addDocumentListener(new DocumentListener() { private String str; public void removeUpdate(DocumentEvent e) { valueChange(); } public void insertUpdate(DocumentEvent e) { valueChange(); } @Override public void changedUpdate(DocumentEvent e) { System.out.println("changeUpdae"); } private void valueChange(){ p.setVisible(!jtf.getText().equals("")); str = jtf.getText(); if(!str.equals("")){ getSta(str); System.out.println(str); tm.update(s1); tb.repaint(); tb.updateUI(); } } }); jtf.addKeyListener(new KeyListener() { private String text="1";//选择框旧值 private int key; private int row; private int max; private Sta selectSta; public void keyTyped(KeyEvent e) { } public void keyReleased(KeyEvent e) { } @Override public void keyPressed(KeyEvent e) { key = e.getKeyCode(); max = tb.getRowCount(); System.out.println("-"+text+"-"+jtf.getText()); if(!text.equals(jtf.getText())){ tb.clearSelection(); } text = jtf.getText(); if(max<=0){ tb.clearSelection(); return; }else{ row = tb.getSelectedRow(); } if(key==KeyEvent.VK_DOWN){ if(row+1<max){ row++; } tb.getSelectedRow(); tb.changeSelection(row, 0, false, false); }else if(key == KeyEvent.VK_UP){ if(row>=1){ row--; } tb.getSelectedRow(); tb.changeSelection(row, 0, false, false); }else if(key == KeyEvent.VK_ENTER){ if(row!=-1){ selectSta = (Sta) tm.getValueAt(row, 0); System.out.println(selectSta.getId()); jtf.setText(selectSta.getId()+""); p.setVisible(false); } } } }); } private Set<Sta> ss = new HashSet<Sta>(); private Set<Sta> s1 = new HashSet<Sta>(); private int x; private Set<Sta> getSta(String str){ s1.clear(); x=0; for (Iterator<Sta> it = ss.iterator(); it.hasNext();) { Sta s = (Sta) it.next(); if(s.getName().contains(str)){ s1.add(s); x++; } if(x==10){ break; } } return s1; } }