同学通讯录网络版 用Java实现

package bag; import java.net.*; import java.io.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; import javax.swing.JOptionPane; public class UpdateClient extends JPanel implements ActionListener{ JLabel queryLabel; JTextField queryField; JButton queryButton; JLabel[] label; JTextField[] field; JButton nextButton; JButton updateButton; JPanel panel1,panel2,panel3; JPanel panel; public UpdateClient() { this.setLayout(new BorderLayout()); panel1=new JPanel(); queryLabel=new JLabel("请输入你要修改者的姓名:"); queryField=new JTextField(10); queryButton=new JButton("开始查询"); panel1.add(Box.createHorizontalStrut(10)); panel1.add(queryLabel); panel1.add(Box.createHorizontalStrut(5)); panel1.add(queryField); panel1.add(Box.createHorizontalStrut(5)); panel1.add(queryButton); panel1.add(Box.createHorizontalStrut(10)); Border etched=BorderFactory.createEtchedBorder(); Border border=BorderFactory.createTitledBorder(etched,"查询记录"); panel1.setBorder(border); panel2=new JPanel(new GridLayout(2,6)); label=new JLabel[6]; label[0]=new JLabel("学号"); label[1]=new JLabel("姓名"); label[2]=new JLabel("性别"); label[3]=new JLabel("宿舍号"); label[4]=new JLabel("联系方式"); label[5]=new JLabel("住址"); for(int i=0;i<label.length;i++) panel2.add(label[i]); field=new JTextField[6]; for(int i=0;i<field.length;i++) field[i]=new JTextField(20); for(int i=0;i<field.length;i++) panel2.add(field[i]); panel3=new JPanel(); nextButton=new JButton("不修改--下一条"); updateButton=new JButton("修改并保存"); panel3.add(Box.createHorizontalStrut(40)); panel3.add(nextButton); panel3.add(Box.createHorizontalStrut(10)); panel3.add(updateButton); panel3.add(Box.createHorizontalStrut(40)); panel=new JPanel(new GridLayout(2,1)); panel.add(panel2); panel.add(panel3); border=BorderFactory.createTitledBorder(etched,"修改信息之后可能不能再恢复，请您慎重考虑"); panel.setBorder(border); this.add(panel1,"North"); this.add(panel,"Center"); panel.setVisible(false); queryButton.addActionListener(this); updateButton.addActionListener(this); nextButton.addActionListener(this); } public void actionPerformed(ActionEvent eve) { JButton button=(JButton)eve.getSource(); if(button==queryButton) { try { Socket toServer=new Socket("192.168.248.113",8766); DataOutputStream writeServer=new DataOutputStream(toServer.getOutputStream()); ObjectInputStream readServer=new ObjectInputStream(toServer.getInputStream()); String sqlstr="select * from Student where 姓名="+"'"+queryField.getText().trim()+"'"; writeServer.writeUTF(sqlstr); Recond recond=new Recond(); recond=(Recond)readServer.readObject(); if(recond==null) { JOptionPane.showMessageDialog(this, "学生库中可能没有该同学的记录","提示信息", JOptionPane.PLAIN_MESSAGE); } else { for(int i=0;i<field.length;i++) field[i].setText(recond.recondValues[i]); panel.setVisible(true); } toServer.close(); } catch(Exception e1) { System.out.println("e1:"+e1.toString()); } } else if(button==nextButton) { panel.setVisible(false); queryField.setText(""); } else if(button==updateButton) { try { Socket toServer=new Socket("192.168.248.113",8767); DataInputStream readServer=new DataInputStream(toServer.getInputStream()); DataOutputStream writeServer=new DataOutputStream(toServer.getOutputStream()); String sqlstr="update Student set 学号=?,姓名=?,性别=?,宿舍号=?,联系方式=?,住址=? where 姓名=?"; writeServer.writeUTF(sqlstr); for(int i=0;i<field.length;i++) writeServer.writeUTF(field[i].getText().trim()); writeServer.writeUTF(queryField.getText().trim()); String result=readServer.readUTF(); JOptionPane.showMessageDialog(this,result,"提示信息",JOptionPane.PLAIN_MESSAGE); panel.setVisible(false); queryField.setText(""); toServer.close(); } catch(Exception e2) { System.out.println("e2:"+e2.toString()); } } } public static void main(String args[]) { JFrame frame=new JFrame(); Container contentPane=frame.getContentPane(); contentPane.add(new UpdateClient()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(500,220); frame.setVisible(true); } }