foodconfiguration.java

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    modify.addActionListener(new FoodConfiguration_modify_actionAdapter(this));
    jPanel5.add(modify, null);
    getContentPane().add(panel1,  BorderLayout.CENTER);
    panel1.add(tableScrollPane1, BorderLayout.CENTER);
    panel1.add(DBNavToolBar,  BorderLayout.SOUTH);
    tableScrollPane1.getViewport().add(jdbTable1, null);
    this.getContentPane().add(jPanel2, BorderLayout.NORTH);
    jPanel2.add(jPanel1, BorderLayout.CENTER);
    jPanel1.add(jLabel8, null);
    jPanel1.add(foodName, null);
    jPanel1.add(jLabel7, null);
    jPanel1.add(producePlace, null);
    jPanel1.add(jLabel6, null);
    jPanel1.add(foodType, null);
    jPanel1.add(jLabel5, null);
    jPanel1.add(foodUnit, null);
    jPanel1.add(jLabel4, null);
    jPanel1.add(price, null);
    jPanel1.add(jLabel3, null);
    jPanel1.add(retailPrice, null);
    jPanel1.add(jLabel2, null);
    jPanel1.add(producer, null);
    jPanel1.add(jLabel9, null);
    jPanel1.add(note, null);
    jPanel2.add(jPanel3,  BorderLayout.NORTH);
    jPanel3.add(jLabel10, null);
    jPanel2.add(jPanel4, BorderLayout.SOUTH);
    jPanel4.add(addFood, null);
    jPanel4.add(deleteFood, null);
    this.getContentPane().add(jPanel5,  BorderLayout.SOUTH);
    jPanel5.add(close, null);
    Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
    this.prepareShow();
  }

  private void prepareShow(){
    Connection conn=null;
    PreparedStatement ps=null;
    ResultSet rs=null;
  try{
    conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Restaurant;user=user;password=user");
    ps=conn.prepareStatement("select name from supplier");
    rs=ps.executeQuery();
    while(rs.next())
      producer.addItem(rs.getString("name"));
    ps=conn.prepareStatement("select name from foodType");
    rs=ps.executeQuery();
    while(rs.next())
      foodType.addItem(rs.getString("name"));
  }
  catch(SQLException e){
  e.printStackTrace();
  }
  finally{
  if(rs!=null)try{rs.close();}catch(SQLException ignore){}
  if(ps!=null)try{ps.close();}catch(SQLException ignore){}
  if(conn!=null)try{conn.close();}catch(SQLException ignore){}
  }
  }

  void addFood_actionPerformed(ActionEvent e) {
      //验证输入数据的合法性
      if(foodName.getText().trim().equals("")||price.getText().trim().equals("")||retailPrice.getText().trim().equals("")||foodUnit.getText().trim().equals(""))
      {
        JOptionPane.showMessageDialog(this, "食品名称,单价和单位不能为空", "错误",JOptionPane.ERROR_MESSAGE);
        return;
      }
      try{
        Float.parseFloat(price.getText().trim());
        Float.parseFloat(retailPrice.getText().trim());
      }
      catch(NumberFormatException ex)
      {
          JOptionPane.showMessageDialog(this, "输入的数据不合法", "错误",JOptionPane.ERROR_MESSAGE);
          return;
      }
      //检查是否已存在该名称的酒菜
      if(this.foodExist(foodName.getText()))
      {
         JOptionPane.showMessageDialog(this, "已存在该名称的酒菜", "错误",JOptionPane.ERROR_MESSAGE);
         return;
      }
      //添加酒菜信息
      Connection conn=null;
      PreparedStatement ps=null;
      try{
      conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Restaurant;user=user;password=user");
      ps=conn.prepareStatement("insert into food(name,proPlace,unit,foodType,price,retailPrice,producer,remark) values(?,?,?,?,?,?,?,?)");
      ps.setString(1,foodName.getText());
      ps.setString(2,producePlace.getText());
      ps.setString(3,foodUnit.getText());
      ps.setString(4,(foodType.getSelectedItem()).toString());
      ps.setFloat(5,Float.parseFloat(price.getText()));
      ps.setFloat(6,Float.parseFloat(retailPrice.getText()));
      ps.setString(7,producer.getSelectedItem().toString());
      ps.setString(8,note.getText());
      ps.executeUpdate();
      //刷新列表显示
     JButton refreshButton=DBNavToolBar.getRefreshButton();
     refreshButton.doClick();
     JOptionPane.showMessageDialog(this, "已成功增加该食品", "操作",JOptionPane.PLAIN_MESSAGE);
    }
    catch(SQLException ex){
        ex.printStackTrace();
    }
    finally{
       if(ps!=null)try{ps.close();}catch(SQLException ignore){}
       if(conn!=null)try{conn.close();}catch(SQLException ignore){}
    }
  }

  private boolean foodExist(String food)
  {
    Connection conn=null;
    PreparedStatement ps=null;
    ResultSet rs=null;
    boolean exist=false;
    try{
      conn=DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Restaurant;user=user;password=user");
      ps=conn.prepareStatement("select name from food");
      rs=ps.executeQuery();
      if(rs.next())
         exist=true;
   }
   catch(SQLException e){
      e.printStackTrace();
   }
   finally{
     if(rs!=null)try{rs.close();}catch(SQLException ignore){}
     if(ps!=null)try{ps.close();}catch(SQLException ignore){}
     if(conn!=null)try{conn.close();}catch(SQLException ignore){}
   }
   return exist;
  }

  void deleteFood_actionPerformed(ActionEvent e) {
        Connection conn=null;
        PreparedStatement ps=null;
        try{
          conn = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Restaurant;user=user;password=user");
          ps = conn.prepareStatement("delete from food where name=?");
          ps.setString(1,foodName.getText());
          if(ps.executeUpdate()==1)
          {
            //刷新列表显示
            JButton refreshButton = DBNavToolBar.getRefreshButton();
            refreshButton.doClick();
            JOptionPane.showMessageDialog(this, "已成功删除该食品", "操作",
                                          JOptionPane.PLAIN_MESSAGE);
          }
        }
        catch(SQLException ex){
          JOptionPane.showMessageDialog(this, "系统中有与该酒菜相关的数据,不能删除", "错误",
                                      JOptionPane.WARNING_MESSAGE);
        }
        finally{
          if(ps!=null)try{ps.close();}catch(SQLException ignore){}
          if(conn!=null)try{conn.close();}catch(SQLException ignore){}
        }
  }

  void close_actionPerformed(ActionEvent e) {
   this.dispose();
  }

  void modify_actionPerformed(ActionEvent e) {
    JButton postButton=DBNavToolBar.getPostButton();
    postButton.doClick();
    JButton saveButton=DBNavToolBar.getSaveButton();
    saveButton.doClick();
    JOptionPane.showMessageDialog(this, "已成功提交修改信息！", "提示",
                                        JOptionPane.PLAIN_MESSAGE);
  }
}

class FoodConfiguration_addFood_actionAdapter implements java.awt.event.ActionListener {
  FoodConfiguration adaptee;

  FoodConfiguration_addFood_actionAdapter(FoodConfiguration adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.addFood_actionPerformed(e);
  }
}

class FoodConfiguration_deleteFood_actionAdapter implements java.awt.event.ActionListener {
  FoodConfiguration adaptee;

  FoodConfiguration_deleteFood_actionAdapter(FoodConfiguration adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.deleteFood_actionPerformed(e);
  }
}

class FoodConfiguration_close_actionAdapter implements java.awt.event.ActionListener {
  FoodConfiguration adaptee;

  FoodConfiguration_close_actionAdapter(FoodConfiguration adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.close_actionPerformed(e);
  }
}

class FoodConfiguration_modify_actionAdapter implements java.awt.event.ActionListener {
  FoodConfiguration adaptee;

  FoodConfiguration_modify_actionAdapter(FoodConfiguration adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.modify_actionPerformed(e);
  }
}