class_info_mod.java~3~

这是一个图书和学生信息的管理系统,它可以在数据库里面增加,修改,删除数据来管理图书和学生信息

package BJXX;

import com.zdsoft.datastore.ASDatastore; //引入本包中的类，因为我们要用到的ASDatastore类(数据仓库)位于本包中
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */
public class class_Info_mod extends ASDialog {
  BorderLayout borderLayout1 = new BorderLayout();
  JPanel jPanel1 = new JPanel();
  JPanel jPanel2 = new JPanel();
  JPanel jPanel3 = new JPanel();
  JLabel jLabel1 = new JLabel();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  JLabel jLabel2 = new JLabel();
  JTextField xh = new JTextField();
  JLabel jLabel3 = new JLabel();
  JTextField name = new JTextField();
  Class_Info_Show t1;
  JLabel jLabel4 = new JLabel();
  JTextField sex = new JTextField();
  JLabel jLabel5 = new JLabel();
  JTextField age = new JTextField();//定义一个test1类（即弹出本对话框的那个页面）的引用，用来接收构造方法中传过来的test1类的对象

  public class_Info_mod(Class_Info_Show s) {
    t1=s;//将创建本类的对象时传入的test1类的对象赋给本类中定义的test1类的引用t1,z这样，当本对话框被创建起来后，
         //就可以使用t1对象（即主窗体对象）中定义的成员变量和成员方法。
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //本页面（对话框）的初始化要注意两件事：
  //（1）：设置本对话框的大小；
  //（2）：将本对话框居中;
  private void jbInit() throws Exception {
    this.setSize(new Dimension(277, 239));//(1)定义本对话框的大小(宽度,高度);
    this.getContentPane().setLayout(borderLayout1);
    jLabel1.setFont(new java.awt.Font("Serif", 0, 15));
    jLabel1.setText("增加班级信息");
    jButton1.setFont(new java.awt.Font("Serif", 0, 12));
    jButton1.setText("取消");
    jButton1.addActionListener(new mzxxadd_jButton1_actionAdapter(this));
    jButton2.setFont(new java.awt.Font("Serif", 0, 12));
    jButton2.setText("确定");
    jButton2.addActionListener(new mzxxadd_jButton2_actionAdapter(this));
    jPanel1.setLayout(gridBagLayout1);
    jLabel2.setFont(new java.awt.Font("Serif", 0, 12));
    jLabel2.setText("班级编号");
    xh.setPreferredSize(new Dimension(80, 22));
    xh.setText("");
    jLabel3.setFont(new java.awt.Font("Serif", 0, 12));
    jLabel3.setText("班级名称");
    name.setPreferredSize(new Dimension(80, 22));
    name.setText("");
    jLabel4.setFont(new java.awt.Font("Serif", 0, 12));
    jLabel4.setText("班主任");
    sex.setSelectionStart(11);
    sex.setText("");
//    jLabel5.setFont(new java.awt.Font("Serif", 0, 12));
//    jLabel5.setText("年龄");
//    age.setText("");
    this.getContentPane().add(jPanel1, BorderLayout.CENTER);
    jPanel1.add(jLabel2,    new GridBagConstraints(0, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(5, 0, 0, 0), 0, 0));
    jPanel1.add(xh,    new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(5, 0, 0, 0), 0, 0));
    jPanel1.add(jLabel3,   new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(5, 0, 0, 0), 0, 0));
    jPanel1.add(name,   new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(5, 0, 0, 0), 0, 0));
    jPanel1.add(jLabel4, new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    jPanel1.add(sex,  new GridBagConstraints(1, 2, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(5, 0, 0, 0), 0, 0));
    jPanel1.add(jLabel5, new GridBagConstraints(0, 3, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    jPanel1.add(age,  new GridBagConstraints(1, 3, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(5, 0, 0, 0), 0, 0));
    this.getContentPane().add(jPanel2, BorderLayout.SOUTH);
    jPanel2.add(jButton2, null);
    jPanel2.add(jButton1, null);
    this.getContentPane().add(jPanel3, BorderLayout.NORTH);
    jPanel3.add(jLabel1, null);
    this.setWindowCenter();//(2)将本对话框居中;
  }

  void jButton1_actionPerformed(ActionEvent e) {
    this.dispose();//关闭本对话框；
  }

  void jButton2_actionPerformed(ActionEvent e) {
    //当点击“保存”按扭后：
    //(1)创建数据中心对象
    ASDatacenter dc = new ASDatacenter();
    //(2)连接数据库
    dc.connect();
    //(3)构造插入数据库数据的SQL语句
    String sql = "insert into bj_info(id,name,teacher) values("+xh.getText()+",'"+
        name.getText()+"','"+sex.getText()+"')";
    System.out.println(sql);
    //(4)调用数据中心对象dc中的update方法，执行插入数据库数据操作，
    String[] msg = dc.update(sql);
    //本方法的返回值为一个两个元素的字符串数组。用来表示本次插入数据库数据操作是否成功；
    //其中，当msg[0]的值为“true”时，表示本次插入数据库数据操作成功，此时，msg[1]的值为“”；
    //当msg[0]的值为“false”时，表示本次插入数据库数据操作失败，此时，msg[1]的值为操作失败的原因说明;

    if(msg[0].equals("true")){//当msg[0]的值为“true”时，表示本次插入数据库数据操作成功
      //本次插入数据库数据操作成功后，还需要做两件事：
      //（1）：将父窗体中的数据仓库对象（即用来显示数据用的ASDatastore 类的对象ds）增加一行并填入相应的数据
      int row = t1.ds.addRow();//父窗体中的数据仓库对象ds增加一行，并返回所增加行的行数
      //从本对话框中取得增加的数据，填入父窗体中的数据仓库对象ds的相应行列中
      //因为ASDatastore类的setObjectAt可能会抛出异常，所以要将包含setObjectAt方法的语句写到try{}catch(){}语句块中
      try {
        t1.ds.setObjectAt(row,"id",new Integer(xh.getText()));//调用ASDatastore类的setObjectAt方法，将增加的相应值的“对象”
        t1.ds.setObjectAt(row,"name",name.getText());
        t1.ds.setObjectAt(row,"teacher",sex.getText());
//        t1.ds.setObjectAt(row,"age",new Integer(age.getText()));
        //填入ds的相应行和列



        //通知显示ds数据的表格，ds的数据已发生改变
        t1.jTable1.ASTableRepant();

      }
      catch (Exception ex) {
        ex.printStackTrace();
      }
      //(2)关闭本本对话框
      this.dispose();
    }
    else{//数据库增加失败
      //弹出错误信息提示框
      dc.disconnect();
      JOptionPane.showMessageDialog(this,"数据库增加失败!","错误",JOptionPane.ERROR_MESSAGE);
      this.dispose();
    }

   //关闭数据库连接
    dc.disconnect();
  }
}

class class_Info_mod_jButton1_actionAdapter implements java.awt.event.ActionListener {
 class_Info_mod adaptee;

  class_Info_mod_jButton1_actionAdapter(class_Info_mod adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class mzxxadd_jButton2_actionAdapter implements java.awt.event.ActionListener {
  bjadd adaptee;

  mzxxadd_jButton2_actionAdapter(bjadd adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}