courseinfopanel.java

使用JBuilder基于Oracle数据库的课程作业

package StudentManageSystem.factionpanels.infopanel;

import com.borland.jbcl.layout.XYConstraints;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JComboBox;
import StudentManageSystem.link.SQLRunner;
import java.sql.ResultSet;
import javax.swing.JOptionPane;
import java.sql.SQLException;
import javax.swing.JTextArea;

public class CourseInfoPanel extends InfoPanel {
    public CourseInfoPanel(boolean e){
        try {
            initialize(e);//初始化父类
        } catch (Exception ex) {
        }
    }

    protected void initialize(boolean e){
        try {
            super.initialize(e);

        } catch (Exception ex) {
        }
        jLabel1.setText("课程名");
        jTextField_csname.setText("jTextField1");
        jLabel2.setText("课程编号");
        jTextField_course_no.setText("jTextField2");
        jLabel4.setText("学分");
        jTextField_credit.setText("jTextField3");
        jLabel6.setToolTipText("");
        jLabel6.setText("课程类别");
        jLabel3.setText("简介");
        jTextArea_introduction.setText("jTextArea1");
        jLabel5.setText("学院");
        this.add(jLabel1, new XYConstraints(56, 45, 82, 38));
        this.add(jTextField_csname, new XYConstraints(128, 53, 95, 29));
        this.add(jTextField_course_no, new XYConstraints(427, 52, 96, 30));
        this.add(jLabel6, new XYConstraints(56, 112, 71, 37));
        this.add(jComboBox_cskind, new XYConstraints(128, 113, 163, 32));
        this.add(jLabel4, new XYConstraints(54, 169, 67, 33));
        this.add(jTextField_credit, new XYConstraints(128, 167, 180, 32));
        this.add(jLabel3, new XYConstraints(54, 213, 58, 31));
        this.add(jTextArea_introduction, new XYConstraints(126, 221, 396, 108));
        this.add(jLabel2, new XYConstraints(318, 52, 80, 31));
        this.add(jLabel5, new XYConstraints(316, 112, 56, 31));
        this.add(jComboBox_coname, new XYConstraints(364, 112, 208, 35));
    }

    public void setSwingEnable(boolean e) {
        jTextField_csname.setEnabled(e);
        jTextField_course_no.setEnabled(e);
        jTextField_credit.setEnabled(e);
        jComboBox_cskind.setEnabled(e);
        jComboBox_coname.setEnabled(e);
        jTextArea_introduction.setEditable(e);
    }

    public boolean delete() {
        return SQLRunner.executSql("delete from course where COURSE_NO='"+keyValue+"'");
    }

    public boolean update() {
        try{
            String college_no;
            if(jComboBox_coname.getSelectedItem()==null){
                JOptionPane.showMessageDialog(null,"学院不能为空","系统提示",JOptionPane.ERROR_MESSAGE);
                return false;
            }else{
                String coname=(String)(jComboBox_coname.getSelectedItem());
                ResultSet rs=SQLRunner.getResult("select * from college where coname='"+coname+"'");
                if(!rs.next())return false;//System.out.println("can't find clname");
                college_no=rs.getString("college_no").trim();//不该不抱错
            }
            String cskind;
            if(jComboBox_cskind.getSelectedItem()!=null)cskind=(String)jComboBox_cskind.getSelectedItem();
            else{
                JOptionPane.showMessageDialog(null,"类别不能为空","系统提示",JOptionPane.ERROR_MESSAGE);
                return false;
            }
             String csname= jTextField_csname.getText().trim();
             String course_no= jTextField_course_no.getText().trim();
             String credit= jTextField_credit.getText().trim();
             if(credit.equals(""))credit="null";
             String introduction=jTextArea_introduction.getText().trim();
             String updatesql="update course set cskind='"+cskind+"',credit="+credit+",college_no='"+college_no+"',csname='"+csname+"',INTRODUCTION='"+introduction+"' where COURSE_NO='"+course_no+"'";
             return SQLRunner.executSql(updatesql);
         }catch(Exception e){
             JOptionPane.showMessageDialog(null,e.toString(),"系统提示",JOptionPane.ERROR_MESSAGE);
             return false;
         }


    }

    public void setAllInfo(String keyValue) {
        updateModel=true;//
         this.keyValue=keyValue;//
         jButton_remove.setVisible(enable);

         try {
             //rs.next();
             ResultSet rs=SQLRunner.getResult("select distinct * from course,college where course.college_no=college.college_no and course_no='"+keyValue+"'");
             if(!rs.next())return;
             addItemFromDic(jComboBox_cskind,"course_kind");
             jComboBox_cskind.setSelectedItem(rs.getString("cskind"));
             //addItem(jComboBox_coname,"select * from college","coname");
             //jComboBox_cskind.setSelectedItem(rs.getString("coname"));
             addItem(jComboBox_coname,"select * from college","coname");//addItem示例，从制定表
             jComboBox_coname.setSelectedItem(rs.getString("coname"));//
             jTextField_csname.setText(rs.getString("csname"));
             jTextField_course_no.setText(rs.getString("course_no"));
             jTextField_credit.setText(rs.getString("credit"));
             jTextArea_introduction.setText(rs.getString("INTRODUCTION"));


         } catch (SQLException ex) {
             System.out.print(ex.toString());
         }

    }


    public void setAllNew() {
        jButton_remove.setVisible(false);

        jTextField_csname.setText("");
        jTextField_course_no.setText("");
        jTextField_credit.setText("");
        addItemFromDic(jComboBox_cskind,"course_kind");
        jComboBox_cskind.setSelectedItem(null);
        jTextArea_introduction.setText("");
        addItem(jComboBox_coname,"select * from college","coname");
        jComboBox_coname.setSelectedItem(null);
    }

    JLabel jLabel1 = new JLabel();
    JTextField jTextField_csname = new JTextField();
    JLabel jLabel2 = new JLabel();
    JTextField jTextField_course_no = new JTextField();
    JLabel jLabel4 = new JLabel();
    JTextField jTextField_credit = new JTextField();
    JLabel jLabel6 = new JLabel();
    JComboBox jComboBox_cskind = new JComboBox();
    JLabel jLabel3 = new JLabel();
    JTextArea jTextArea_introduction = new JTextArea();
    JLabel jLabel5 = new JLabel();
    JComboBox jComboBox_coname = new JComboBox();
    public boolean insert() {
        try{
            String college_no;
            if(jComboBox_coname.getSelectedItem()==null){
                JOptionPane.showMessageDialog(null,"学院不能为空","系统提示",JOptionPane.ERROR_MESSAGE);
                return false;
            }else{
                String coname=(String)(jComboBox_coname.getSelectedItem());
                ResultSet rs=SQLRunner.getResult("select * from college where coname='"+coname+"'");
                if(!rs.next())return false;//System.out.println("can't find clname");
                college_no=rs.getString("college_no").trim();//不该不抱错
            }
            String cskind;
            if(jComboBox_cskind.getSelectedItem()!=null)cskind=(String)jComboBox_cskind.getSelectedItem();
            else{
                JOptionPane.showMessageDialog(null,"类别不能为空","系统提示",JOptionPane.ERROR_MESSAGE);
                return false;
            }
             String csname= jTextField_csname.getText().trim();
             String course_no= jTextField_course_no.getText().trim();
             String credit= jTextField_credit.getText().trim();
             if(credit.equals(""))credit="null";
             String introduction=jTextArea_introduction.getText().trim();
             //String insertsql="update department set cskind='"+cskind+"',credit="+credit+"',college_no="+college_no+",csname='"+csname+"',INRTODUCTION='"+introduction+"' where course_no='"+course_no+"'";
             //String insertsql="insert into college(college_no,coname,PRESIDENT,phone,INTRODUCTON) values('"+college_no+"','"+coname+"','"+teacher_no+"','"+phone+"','"+introduction+"')";
             String insertsql="insert into course(college_no,csname,cskind,credit,INTRODUCTION,COURSE_NO) values('"+college_no+"','"+csname+"','"+cskind+"',"+credit+",'"+introduction+"','"+course_no+"')";

             return SQLRunner.executSql(insertsql);
         }catch(Exception e){
             JOptionPane.showMessageDialog(null,e.toString(),"系统提示",JOptionPane.ERROR_MESSAGE);
             return false;
         }


    }

}