mainframe.java

超市管理系统的主界面的代码

                .addContainerGap())
        );
        jPanel3Layout.setVerticalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                .addComponent(jButton6)
                .addComponent(jButton3)
                .addComponent(jButton2)
                .addComponent(jButton1)
                .addComponent(jButton4)
                .addComponent(jButton7)
                .addComponent(jButton5, javax.swing.GroupLayout.DEFAULT_SIZE, 39, Short.MAX_VALUE))
        );

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jPanel3, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jPanel2, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jPanel1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton6MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton6MouseClicked
// TODO 将在此处添加您的处理代码：
        new SaleChart();
    }//GEN-LAST:event_jButton6MouseClicked

    private void jButton4MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton4MouseClicked
// TODO 将在此处添加您的处理代码：
        String title=getTitle();
        setVisible(false);
	MainFrame main = new MainFrame();
	main.setTitle(title);
        main.setVisible(true);
    }//GEN-LAST:event_jButton4MouseClicked

    private void jButton7MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton7MouseClicked
// TODO 将在此处添加您的处理代码：
        if(isChecked==false){            
            String vip=JOptionPane.showInputDialog("请输入您的会员卡号").trim();
            String read;
            try{
                FileReader fr = new FileReader("会员信息.txt");
                BufferedReader br = new BufferedReader(fr);
                while ((read = br.readLine()) != null){ 
                    if(vip.equals(read)){
                        isVIP=true;
                        countMoney();
                        jTextField2.setText((new DecimalFormat("##########.##")).format(total));
                    }
                }
            }
            catch(IOException ie){
                System.err.println(ie.getMessage());
            }
        }
    }//GEN-LAST:event_jButton7MouseClicked

    private void jButton5MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton5MouseClicked
// TODO 将在此处添加您的处理代码：
        if(isChecked==false){        
            int a = JOptionPane.showConfirmDialog(null, "确定后将不能再修改\n帐单将自动保存");
            if(a==JOptionPane.YES_OPTION){
                countMoney();
                jTextField2.setText((new DecimalFormat("##########.##")).format(total));  
                String str=jTextField4.getText().trim();
                if(str.equals("")||str==null)
                    JOptionPane.showMessageDialog(null,"对不起，您还没有付帐！");
                else
                {
                    try{
                        pay=Double.parseDouble(str);
                        if(pay<total)
                            JOptionPane.showMessageDialog(null,"支付的钱不够！");
                        else{
                            repay=Double.parseDouble((new DecimalFormat("##########.#")).format(pay-total).toString());         
                            jTextField5.setText(""+(new DecimalFormat("##########.#")).format(repay));
                            setBest();
                            save();
                            isChecked=true;
                            jTextField1.setEditable(false);
                            jTextField4.setEditable(false);
                            jTextField2.setEditable(false);
                            jTextField3.setEditable(false);
                            jTextField5.setEditable(false);
                            jTextArea1.setEditable(false);
                            jButton1.setEnabled(false);
                            jButton2.setEnabled(false);
                            jButton3.setEnabled(false);
                            jButton5.setEnabled(false);                          
                            jButton7.setEnabled(false);
                        }
                    }catch(Exception e){
                        JOptionPane.showMessageDialog(null,"非法付费输入！");
                    }                                                                
                }
            }
        }
    }//GEN-LAST:event_jButton5MouseClicked

    private void jButton3MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton3MouseClicked
// TODO 将在此处添加您的处理代码：
        if(isChecked==false){            
            String id = JOptionPane.showInputDialog("请输入要删除商品编号");
            if (id != null) {
                int location = find(id);
                if (location == -1)
                    JOptionPane.showMessageDialog(null, "用户未购买货物"+ id);
                else{
                    consumerCargo.remove(location);
                    countMoney();
                    jTextField2.setText((new DecimalFormat("##########.#")).format(total));
                    jTextArea1.setText("");
                    showInfo();
                }
            }
        }
    }//GEN-LAST:event_jButton3MouseClicked
    
    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseClicked
// TODO 将在此处添加您的处理代码：
        if(isChecked==false){
            String id = JOptionPane.showInputDialog("请输入要修改数量的商品编号");
            if (id != null) {
                int location = find(id);
                if (location == -1)
                    JOptionPane.showMessageDialog(null, "用户未购买货物"+ id);
                else {
                    Cargo cargo =consumerCargo.get(location);
                    int number = cargo.getNumber();
                    try {
                        number=Integer.parseInt(JOptionPane.showInputDialog("请输入商品:"+id+"新的数量"));
                        if(number<=0)
                            JOptionPane.showMessageDialog(null,"数量应为大于0的整数！");
                    } catch (NumberFormatException e) {
                        JOptionPane.showMessageDialog(null, "请输入数字");
                    }
                    cargo.setNumber(number);
                    countMoney();
                    jTextField2.setText((new DecimalFormat("##########.#")).format(total));
                    jTextArea1.setText("");
                    showInfo();
                }
            }
        }
    }//GEN-LAST:event_jButton2MouseClicked
    /*“修改单价”按钮的事件，点击后，将提示销售员输入要修改单价的货物id号,
     *通过查询，若不存在，将有信息提示，若存在，将提示销售员以"普通价 会员价"的形式输入（普通价>会员价）
     */
    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton1MouseClicked
// TODO 将在此处添加您的处理代码：
        if(isChecked==false){            
            String id = JOptionPane.showInputDialog("请输入要修改价格的商品编号");
            if (id != null) {
                int location = find(id);
                if (location == -1)
                    JOptionPane.showMessageDialog(null, "用户未购买货物"+ id);
                else {
                    Cargo cargo =consumerCargo.get(location);
                    double priceNormal = cargo.getPriceNormal();
                    double priceVIP=cargo.getPriceVIP();
                    try {
                        StringTokenizer sto=new StringTokenizer(JOptionPane.showInputDialog("新单价，分别为普通价和会员价，\n如:2.8 2.5"));
                        priceNormal=Double.parseDouble(sto.nextToken());
                        if(sto.hasMoreTokens())
                            priceVIP=Double.parseDouble(sto.nextToken());
                        while (priceNormal <= 0||priceVIP<=0) {
                            sto=new StringTokenizer(JOptionPane.showInputDialog("重新输入新单价（系统默认大于零元）\n如2.8 2.5"));
                            priceNormal=Double.parseDouble(sto.nextToken());
                            priceVIP=Double.parseDouble(sto.nextToken());
                        }
                    } catch (NumberFormatException e) {
                        JOptionPane.showMessageDialog(null, "输入非法！");
                    }
                    cargo.setPriceNormal(priceNormal);                    
                    cargo.setPriceVIP(priceVIP);
                    countMoney();
                    jTextField2.setText((new DecimalFormat("##########.#")).format(total));
                    jTextArea1.setText("");
                    showInfo();
                }
            }
        }
    }//GEN-LAST:event_jButton1MouseClicked
    /*键盘按钮事件，销售员将客户购买货物的id号输入后，按下enter键后，
     将查找该货物是否存在，若存在，将记入购买清单中，若不存在，将提示销售员
     */
    private void jTextField1KeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_jTextField1KeyPressed
// TODO 将在此处添加您的处理代码：
        int keyCode=evt.getKeyCode();
        if(keyCode==KeyEvent.VK_ENTER){
            String cargoId = jTextField1.getText().trim();
	    if (marketCargo.find(cargoId) == -1) {
	        JOptionPane.showMessageDialog(null,"找不到商品:" + cargoId);
                jTextField1.setText("");
	    } 
            else if(find(cargoId)!=-1){
                Cargo cargo=consumerCargo.get(find(cargoId));
                int number=cargo.getNumber()+1;
                cargo.setNumber(number);
                jTextArea1.setText("");
                showInfo();
                countMoney();
                jTextField2.setText((new DecimalFormat("##########.#")).format(total));
                jTextField1.setText("");
            }              
            else {