studentinsertpanel.java

基于JB的网络数据库系统开发

package studentmanage;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.sql.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class StudentInsertPanel extends JPanel {
  Connection con=null;
  Statement stmt=null;
  ResultSet rs=null;
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JLabel jLabel3 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JTextField jTextField2 = new JTextField();
  JRadioButton jRadioButton1 = new JRadioButton();
  JRadioButton jRadioButton2 = new JRadioButton();
  ButtonGroup buttonGroup1 = new ButtonGroup();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  MainFrame f;

  public StudentInsertPanel(MainFrame f) {
    try {
      this.f=f;
      jbInit();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }
  void jbInit() throws Exception {
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel1.setText("学  号");
    jLabel1.setBounds(new Rectangle(98, 27, 47, 28));
    this.setLayout(null);
    jLabel2.setBounds(new Rectangle(98, 72, 47, 28));
    jLabel2.setText("姓  名");
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel2.setToolTipText("");
    jLabel3.setToolTipText("");
    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));
    jLabel3.setText("性  别");
    jLabel3.setBounds(new Rectangle(98, 121, 47, 28));
    jTextField1.setFont(new java.awt.Font("Dialog", 0, 16));
    jTextField1.setMinimumSize(new Dimension(6, 22));
    jTextField1.setText("");
    jTextField1.setBounds(new Rectangle(166, 27, 146, 28));
    jTextField2.setBounds(new Rectangle(166, 72, 146, 28));
    jTextField2.setText("");
    jTextField2.setMinimumSize(new Dimension(6, 22));
    jTextField2.setFont(new java.awt.Font("Dialog", 0, 16));
    jRadioButton1.setFont(new java.awt.Font("Dialog", 0, 16));
    jRadioButton1.setSelected(true);
    jRadioButton1.setText("男");
    jRadioButton1.setBounds(new Rectangle(174, 118, 48, 34));
    jRadioButton2.setBounds(new Rectangle(244, 118, 48, 34));
    jRadioButton2.setText("女");
    jRadioButton2.setFont(new java.awt.Font("Dialog", 0, 16));
    jButton1.setBounds(new Rectangle(109, 170, 77, 38));
    jButton1.setFont(new java.awt.Font("Dialog", 0, 16));
    jButton1.setText("插入");
    jButton1.addActionListener(new StudentInsertPanel_jButton1_actionAdapter(this));
    jButton2.setText("重输");
    jButton2.setFont(new java.awt.Font("Dialog", 0, 16));
    jButton2.setToolTipText("");
    jButton2.setBounds(new Rectangle(228, 170, 77, 38));
    buttonGroup1.add(jRadioButton1);
    buttonGroup1.add(jRadioButton2);
    this.add(jLabel2, null);
    this.add(jLabel1, null);
    this.add(jLabel3, null);
    this.add(jTextField1, null);
    this.add(jTextField2, null);
    this.add(jRadioButton1, null);
    this.add(jRadioButton2, null);
    this.add(jButton2, null);
    this.add(jButton1, null);
  }

  void jButton1_actionPerformed(ActionEvent e) {
    //获得输入的信息
    String  studentid=jTextField1.getText().trim();
    String name=jTextField2.getText().trim();
    String sex="";
    if(jRadioButton1.isSelected())
      sex="男";
    if(jRadioButton2.isSelected())
      sex="女";
    String sql1="select * from studentname where studentid='" +studentid+"'";
    String sql2="insert studentname(studentid,name,sex) values('"
        +studentid+"','" +name+"','"+sex+"')";
    //判断输入是否为空
    if(studentid.equals("") ||name.equals("")){
      JOptionPane.showMessageDialog(this,"信息输入不全,请完整输入","信息提示",2);
      return;
    }
    //判断是否存在相同的学号，若没有，插入记录
    DbConnect.loadClass();
    con=DbConnect.makeConnect("127.0.0.1","StudentScore","sa","");
    stmt=DbConnect.makeStatement(con);
    rs=DbConnect.makeResultSet(stmt,sql1);
    try{
      if (rs.next()) {
        //存在相同的学号
        JOptionPane.showMessageDialog(this, "该学号已经存在,请重新输入", "信息提示", 2);
        DbConnect.close(rs);
        DbConnect.close(stmt);
        DbConnect.close(con);
        return;
      }else{
        //插入记录
        stmt.executeUpdate(sql2);
        DbConnect.close(rs);
        DbConnect.close(stmt);
        DbConnect.close(con);
        //将窗口显示内容设置为
        f.remove(f.getContentPane());
        MessageShowPanel msg=new MessageShowPanel("学生信息已录入");
        f.setContentPane(msg);
        f.show();
      }
    }catch(SQLException e1){
      System.out.println("数据库表访问异常");
    }

  }
}

class StudentInsertPanel_jButton1_actionAdapter implements java.awt.event.ActionListener {
  StudentInsertPanel adaptee;

  StudentInsertPanel_jButton1_actionAdapter(StudentInsertPanel adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}