testfrom1.java~36~

java+sql学生管理系统,管理学生的信息

package test;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.sql.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.Rectangle;
import javax.swing.*;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class testFrom1 extends JFrame {
    JPanel contentPane;
    JLabel jLabel1 = new JLabel();
    JLabel jLabel2 = new JLabel();
    JTextField jt1 = new JTextField();
    JButton jb1 = new JButton();
    JTextArea ja1 = new JTextArea();
    JLabel jLabel3 = new JLabel();
    JLabel jLabel4 = new JLabel();
    JTextArea ja2 = new JTextArea();
    JLabel jLabel5 = new JLabel();
    JTextArea ja3 = new JTextArea();
    JLabel jLabel6 = new JLabel();
    JTextArea ja4 = new JTextArea();
    JLabel jLabel7 = new JLabel();
    JTextArea ja5 = new JTextArea();
    JLabel jLabel8 = new JLabel();
    JTextField jt2 = new JTextField();
    JButton jb2 = new JButton();
    JButton jb3 = new JButton();
    public testFrom1() {
        try {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    /**
     * Component initialization.
     *
     * @throws java.lang.Exception
     */
    private void jbInit() throws Exception {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(null);
        setSize(new Dimension(406, 345));
        setTitle("修改试题");
        jLabel1.setFont(new java.awt.Font("隶书", Font.BOLD, 18));
        jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
        jLabel1.setText("试    题    修    改");
        jLabel1.setBounds(new Rectangle(97, 11, 210, 20));
        jLabel2.setText("请输入题号:");
        jLabel2.setBounds(new Rectangle(22, 40, 81, 21));
        jt1.setBounds(new Rectangle(105, 41, 60, 19));
        jb1.setBounds(new Rectangle(241, 39, 89, 20));
        jb1.setText("查找试题");
        jb1.addActionListener(new testFrom1_jb1_actionAdapter(this));
        ja1.setBounds(new Rectangle(105, 73, 245, 42));
        jLabel3.setText("题干");
        jLabel3.setBounds(new Rectangle(22, 77, 63, 17));
        jLabel4.setText("选项A");
        jLabel4.setBounds(new Rectangle(22, 125, 65, 18));
        ja2.setBounds(new Rectangle(104, 124, 245, 20));
        jLabel5.setText("选项B");
        jLabel5.setBounds(new Rectangle(22, 156, 52, 19));
        ja3.setBounds(new Rectangle(105, 153, 245, 23));
        jLabel6.setText("选项C");
        jLabel6.setBounds(new Rectangle(23, 187, 51, 19));
        ja4.setBounds(new Rectangle(102, 184, 248, 25));
        jLabel7.setText("选项D");
        jLabel7.setBounds(new Rectangle(23, 218, 54, 21));
        ja5.setBounds(new Rectangle(104, 216, 248, 26));
        jLabel8.setText("答案:");
        jLabel8.setBounds(new Rectangle(25, 251, 54, 20));
        jt2.setBounds(new Rectangle(104, 251, 60, 21));
        jb2.setBounds(new Rectangle(123, 281, 83, 23));
        jb2.setText("确认修改");
        jb2.addActionListener(new testFrom1_jButton2_actionAdapter(this));
        jb3.setBounds(new Rectangle(246, 281, 76, 22));
        jb3.setText("退出");
        jb3.addActionListener(new testFrom1_jb3_actionAdapter(this));
        contentPane.add(jLabel1);
        contentPane.add(ja1);
        contentPane.add(jLabel3);
        contentPane.add(jLabel2);
        contentPane.add(jLabel4);
        contentPane.add(ja2);
        contentPane.add(jLabel5);
        contentPane.add(ja3);
        contentPane.add(jLabel6);
        contentPane.add(ja4);
        contentPane.add(jLabel7);
        contentPane.add(ja5);
        contentPane.add(jLabel8);
        contentPane.add(jt2);
        contentPane.add(jb2);
        contentPane.add(jb3);
        contentPane.add(jt1);
        contentPane.add(jb1);
    }

//实现修改功能
    public void jb2_actionPerformed(ActionEvent e) {
        String ID=jt1.getText().trim();      //声明变量获取输入的值
        String timu=ja1.getText();
        String opA=ja2.getText();
        String opB=ja3.getText();
        String opC=ja4.getText();
        String opD=ja5.getText();
        String answers=jt2.getText().trim();
        Connection con=null;
        Statement s1=null;
        ResultSet rs1=null;
           try
           {
                   con=SearchDB.link();                              //连接数据库
                   s1=con.createStatement();
                   rs1=s1.executeQuery("select * from Question where QuestionID='"+ID+"'");        //查找对应的题号
                   if(rs1.next())
                   {
                       s1.executeUpdate("update Question set Content='"+timu+"' where QuestionID='"+ID+"'");    //更新相应的记录
                       s1.executeUpdate("update Question set OptionA='"+opA+"' where QuestionID='"+ID+"'");
                       s1.executeUpdate("update Question set OptionB='"+opB+"' where QuestionID='"+ID+"'");
                       s1.executeUpdate("update Question set OptionC='"+opC+"' where QuestionID='"+ID+"'");
                       s1.executeUpdate("update Question set OptionD='"+opD+"' where QuestionID='"+ID+"'");
                       s1.executeUpdate("update Question set Answers='"+answers+"' where QuestionID='"+ID+"'");
                       JOptionPane.showMessageDialog(null,""+ID+"号试题修改完成!");       //完成并获取题号
                       con.close();
                       s1.close();
                   }

           }
           catch(Exception co)
           {
               JOptionPane.showMessageDialog(null,co.getMessage());
           }
    }
//查找功能
    public void jb1_actionPerformed(ActionEvent e) {
        String ID=jt1.getText();
        Connection con=null;
        Statement s=null;
        ResultSet rs=null;
             try
             {
                 if(ID.length()==0)
              {
                  JOptionPane.showMessageDialog(null,"请输入题号!");
              }
                else
                {
                    con = SearchDB.link();
                    s = con.createStatement();
                    rs = s.executeQuery(
                            "select * from Question where QuestionID='" + ID +
                            "'"); //查询题号
                    if (rs.next()) {
                        String tigan = rs.getString("Content"); //声明变量获取数据库对应的列值
                        String A = rs.getString("OptionA");
                        String B = rs.getString("OptionB");
                        String C = rs.getString("OptionC");
                        String D = rs.getString("OptionD");
                        String daan = rs.getString("Answers");
                        ja1.setText(tigan); //从数据库中提取数据显示在文本筐内
                        ja2.setText(A);
                        ja3.setText(B);
                        ja4.setText(C);
                        ja5.setText(D);
                        jt2.setText(daan);
                        con.close();
                        s.close();
                    }
                }
             }
             catch(SQLException ce)
             {
                 JOptionPane.showMessageDialog(null,ce.getMessage());
          }
    }

    public void jb3_actionPerformed(ActionEvent e) {
     System.exit(0);    //退出功能
    }
}


class testFrom1_jb3_actionAdapter implements ActionListener {
    private testFrom1 adaptee;
    testFrom1_jb3_actionAdapter(testFrom1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jb3_actionPerformed(e);
    }
}


class testFrom1_jb1_actionAdapter implements ActionListener {
    private testFrom1 adaptee;
    testFrom1_jb1_actionAdapter(testFrom1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jb1_actionPerformed(e);
    }
}


class testFrom1_jButton2_actionAdapter implements ActionListener {
    private testFrom1 adaptee;
    testFrom1_jButton2_actionAdapter(testFrom1 adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jb2_actionPerformed(e);
    }
}