inputgrade.java

用java实现的学生管理系统

package xscjgl;

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JPanel;
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;
import java.awt.Color;
import javax.swing.JLabel;
import javax.swing.JComboBox;
import javax.swing.JTextField;
import javax.swing.JButton;
import com.borland.dbswing.JdbTextField;
import com.borland.dbswing.TableScrollPane;
import com.borland.dbswing.JdbTable;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.sql.ResultSet;
import javax.swing.JOptionPane;
import java.awt.Dimension;
import com.borland.dx.sql.dataset.QueryDescriptor;
import com.borland.dx.sql.dataset.Load;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class inputGrade extends JFrame {
    XYLayout xYLayout2 = new XYLayout();
    JPanel jPanel1 = new JPanel();
    JLabel jLabel1 = new JLabel();
    JComboBox jComboBox1 = new JComboBox();
    JPanel jPanel2 = new JPanel();
    JLabel jLabel2 = new JLabel();
    JLabel jLabel3 = new JLabel();
    JLabel jLabel4 = new JLabel();
    JTextField jTextField1 = new JTextField();
    JButton jButton1 = new JButton();
    JdbTextField jdbTextField1 = new JdbTextField();
    JdbTextField jdbTextField2 = new JdbTextField();
    TableScrollPane tableScrollPane1 = new TableScrollPane();
    XYLayout xYLayout3 = new XYLayout();
    JLabel jLabel5 = new JLabel();
    JdbTable jdbTable1 = new JdbTable();
    DataModule1 dataModule11 = new DataModule1();
    public String Cno;
    JButton jButton2 = new JButton();
    public inputGrade() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    private void jbInit() throws Exception {
        dataModule11 = DataModule1.getDataModule();
        getContentPane().setLayout(xYLayout2);
        jPanel2.setBackground(new Color(236, 233, 255));
        jPanel2.setLayout(xYLayout3);
        jLabel2.setText("当前选择的学生信息是：");
        jLabel2.setBounds(new Rectangle(35, 31, 164, 15));
        xYLayout2.setWidth(425);
        xYLayout2.setHeight(328);
        jLabel3.setText("学号：");
        jLabel3.setBounds(new Rectangle(35, 54, 49, 15));
        jLabel4.setText("姓名：");
        jLabel4.setBounds(new Rectangle(213, 53, 47, 15));
        jTextField1.setToolTipText("");
        jTextField1.setBounds(new Rectangle(116, 82, 77, 20));
        jButton1.setBounds(new Rectangle(217, 81, 68, 23));
        jButton1.setText("提交");
        jButton1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jButton1_actionPerformed(e);
            }
        });
        jdbTextField1.setColumnName("Sno");

        jdbTextField1.setDataSet(dataModule11.getStudent());
        jdbTextField1.setBounds(new Rectangle(85, 51, 102, 20));
        jdbTextField1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jdbTextField1_actionPerformed(e);
            }
        });
        jdbTextField2.setColumnName("Sname");
        jdbTextField2.setDataSet(dataModule11.getStudent());
        jdbTextField2.setBounds(new Rectangle(264, 49, 93, 20));
        jLabel5.setText("请输入成绩:");
        jLabel5.setBounds(new Rectangle(35, 85, 91, 15));
        jdbTable1.setDataSet(dataModule11.getStudent());
        jComboBox1.setBounds(new Rectangle(139, 0, 100, 23));

        jComboBox1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jComboBox1_actionPerformed(e);
            }
        });

        jLabel1.setBounds(new Rectangle(35, 6, 95, 15));
        jButton2.setBounds(new Rectangle(301, 81, 81, 23));
        jButton2.setText("退出");
        jButton2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jButton2_actionPerformed(e);
            }
        });
        tableScrollPane1.getViewport().add(jdbTable1);
        this.getContentPane().add(jPanel1, new XYConstraints( -1, 6, 425, 140));
        jPanel1.add(jLabel3, null);
        jPanel1.add(jLabel1, null);
        jPanel1.add(jLabel2, null);
        jPanel1.add(jLabel5, null);
        jPanel1.add(jLabel4, null);
        jPanel1.add(jdbTextField2, null);
        jPanel1.add(jComboBox1, null);
        jPanel1.add(jdbTextField1, null);
        jPanel1.add(jTextField1, null);
        jPanel1.add(jButton1, null);
        jPanel1.add(jButton2);
        jPanel2.add(tableScrollPane1, new XYConstraints(6, 10, 387, 128));
        this.getContentPane().add(jPanel2, new XYConstraints(0, 145, 426, 181));

        jPanel1.setLayout(null);
        jLabel1.setText("请选择课程：");
        jPanel1.setBackground(new java.awt.Color(236, 233, 255));
    }


    public void jComboBox1_actionPerformed(ActionEvent e) {
        String Cname=String.valueOf(jComboBox1.getSelectedItem().toString());
        try {
            Jdbcconn conn = new Jdbcconn();
            conn.OpenConn("tqti", "tqti", "111111");
            ResultSet rs = conn.getResults("select Cno from Course where Cname='"+Cname+"'");
            rs.first();
            Cno=rs.getString("Cno");
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(null, "catch first");
        } //end try catch

        String courseSQL = "select * from queryGrade  where Cno='"+Cno+"'";
        try {
            dataModule11.Query.close();
            dataModule11.Query.setQuery(new QueryDescriptor(dataModule11.database1,courseSQL, null, true, Load.ALL));
            dataModule11.Query.open();
            dataModule11.Query.refresh();
            //jdbTable
           jdbTextField1.setColumnName("Sno");
           jdbTextField2.setColumnName("Sname");
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(null, "catch last！");
        } //end try catch

    }

    public void jButton1_actionPerformed(ActionEvent e) {
        String inputGrade=jTextField1.getText().trim().toString();
        try{
            float grade = Float.parseFloat(inputGrade);
            if(grade>100||grade<0){
               JOptionPane.showMessageDialog(null, "您的输入有误，请重新输入！");
               jTextField1.setText("");
            }else{

                try {
                    Jdbcconn conn = new Jdbcconn();
                    conn.OpenConn("tqti", "tqti", "111111");
                    String gradeSQL="update SC set Cgrade='"+grade+"' where Sno='"+jdbTextField1.getText().trim()+"'and Cno='"+Cno+"'";
                    conn.executeUpdate(gradeSQL);
                    JOptionPane.showMessageDialog(null, "成绩输入成功！");
                    dataModule11.Query.refresh();
                } catch (Exception ex) {
                    JOptionPane.showMessageDialog(null, "成绩输入出错!");
                } //end try catch

            }
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(null, "您的输入有误，请重新输入！");
            jTextField1.setText("");
        } //end try catch


    }

    public void jButton2_actionPerformed(ActionEvent e) {
        this.dispose();
    }


    public static void main(String[] args) {
        inputGrade inputgrade = new inputGrade();
        inputgrade.setVisible(true);
        inputgrade.setLocationRelativeTo(null);
        inputgrade.setSize(new Dimension(425, 390));

        Jdbcconn conn = new Jdbcconn();
        String strsql = "selet * froCourse";
        try {
            conn.OpenConn("tqti", "ti", "111111");
            ResultSet cs = conn.getResults(strsql);
            cs.beforeFirst();
            while (cs.next()) {
                inputgrade.jComboBox1.addItem(cs.getString("Cname"));
           }
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(null, "catch first");
        } //end try catch
    }

    public void jdbTextField1_actionPerformed(ActionEvent e) {

    }


}