序言： 学Javacrm开发定制已经有几个月了，crm开发定制上一次总结是针对GUIcrm开发定制界面写的简易计算器，crm开发定制实现加减乘除功能以及crm开发定制计算器标准型和科学型crm开发定制之间的转换，有兴趣可以看看 . 这次写的，实现的功能有账户的注册、登录，超市商品类别的添加、修改和删除以及商品的添加、修改和删除的功能。用户注册之后把注册信息导入数据库；用户登录时候查询用户表，方可登录进去；商品类别和商品的增加也如注册信息一样，把信息导入商品类别表和商品表。由于快期末考试了，超市管理系统的一些功能还没有完善，后续还会更新顾客登录超市系统后，只能拥有查询商品的权限，并且还可以实现购买商品的功能，哈~哈 ~…
1、首先是建立数据库表：
2、实现主页面：
3、实现用户注册：
核心代码：
public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new Register().setVisible(true); } }); } private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { String name=this.jTextField1.getText(); String age=this.jTextField3.getText(); String QQ=this.jTextField4.getText(); String userName=this.jTextField5.getText(); String password1=this.jPasswordField1.getText(); String password2=this.jPasswordField2.getText(); if(StringUtil.isEmpty(name)){ JOptionPane.showMessageDialog(null,"姓名不能为空"); return; } if(StringUtil.isEmpty(age)){ JOptionPane.showMessageDialog(null,"年龄不能为空"); return; } if(StringUtil.isEmpty(QQ)){ JOptionPane.showMessageDialog(null,"QQ不能为空"); return; } if(StringUtil.isEmpty(userName)){ JOptionPane.showMessageDialog(null,"注册账号不能为空"); return; } if(StringUtil.isEmpty(password1)){ JOptionPane.showMessageDialog(null,"注册密码不能为空"); return; } if(StringUtil.isEmpty(password2)){ JOptionPane.showMessageDialog(null,"确认密码不能为空"); return; } if(!password1.equals(password2)){ JOptionPane.showMessageDialog(null,"两个密码填写不一致"); return; } User user=new User(userName,password1); Connection con=null; try{ con=dbUtil.getCon(); int n=userDao.add(con,user); if(n==1){ JOptionPane.showMessageDialog(null,"用户注册成功！"); }else{ JOptionPane.showMessageDialog(null,"注册失败！！"); } }catch (Exception e){ e.printStackTrace(); JOptionPane.showMessageDialog(null,"注册失败！！"); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } //上一步 private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { dispose(); new HomePage().setVisible(true); }- 1
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注册成功之后可以返回上一步，重新登录
4、实现用户登录：
核心代码：
//重置 private void resetValueActionPerformed(ActionEvent evt) { this.userNameTxt.setText(""); this.passwordTxt.setText(""); } //登录事件处理 private void loginActionPerformed(ActionEvent evt) { String userName=this.userNameTxt.getText(); String password=new String(this.passwordTxt.getPassword()); if(StringUtil.isEmpty(userName)){ JOptionPane.showMessageDialog(null,"用户名不能为空！"); return; } if(StringUtil.isEmpty(password)){ JOptionPane.showMessageDialog(null,"密码不能为空"); return; } User usr=new User(userName,password); Connection con=null; try{ con=dbUtil.getCon(); User currentUser=userDao.login(con,usr); if(currentUser!=null){ dispose(); new MainFrm().setVisible(true); }else{ JOptionPane.showMessageDialog(null,"登录失败，用户名密码错误！"); } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } }- 1
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接下来是商品类别和商品的实现，主要是在JFrame窗口中加入Inter窗口
5、主菜单之关于：
核心代码：
6、主菜单之商品类别管理：
核心代码：
private void jButton1ActionPerformed(ActionEvent evt) { String goodsTypeName=this.goodsTypeNameTxt.getText(); String goodsTypeDesc=this.goodsTypeDescTxt.getText(); if(StringUtil.isEmpty(goodsTypeName)){ JOptionPane.showMessageDialog(null,"商品类别不能为空"); return; } GoodsType goodsType=new GoodsType(goodsTypeName,goodsTypeDesc); Connection con=null; try{ con=dbUtil.getCon(); int n=goodsTypeDao.add(con,goodsType); if(n==1){ JOptionPane.showMessageDialog(null,"商品类别添加成功！"); jButton2ActionPerformed(evt); }else{ JOptionPane.showMessageDialog(null,"添加失败！！"); } }catch (Exception e){ e.printStackTrace(); JOptionPane.showMessageDialog(null,"添加失败！！"); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } //重置 private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { this.goodsTypeNameTxt.setText(""); this.goodsTypeDescTxt.setText(""); }- 1
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//表格行点击事件 private void jTable1MousePressed(java.awt.event.MouseEvent evt) { int row=jTable1.getSelectedRow();//获取行数 idTxt.setText((String)jTable1.getValueAt(row,0)); goodsTypeNameTxt.setText((String)jTable1.getValueAt(row,1)); goodsTypeDescTxt.setText((String)jTable1.getValueAt(row,2)); } //鼠标单击后，删除 private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) { String id=idTxt.getText(); if(StringUtil.isEmpty(id)){ JOptionPane.showMessageDialog(null,"请选择要删除的记录"); return; } int n=JOptionPane.showConfirmDialog(null,"Are you 确定delete this记录？"); if(n==0){ Connection con=null; try{ con=dbUtil.getCon(); int deleteNum=goodsTypeDao.delect(con,id); //System.out.println(deleteNum); if(deleteNum==1){ JOptionPane.showMessageDialog(null,"删除成功"); this.resetValue(); this.fillTable(new GoodsType()); }else{ JOptionPane.showMessageDialog(null,"删除失败"); } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } } //鼠标单击后，修改 private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { String id=idTxt.getText(); String goodsTypeName=goodsTypeNameTxt.getText(); String goodsTypeDesc=goodsTypeDescTxt.getText(); if(StringUtil.isEmpty(id)){ JOptionPane.showMessageDialog(null,"请选择要修改的记录"); return; } GoodsType goodsType=new GoodsType(Integer.parseInt(id),goodsTypeName,goodsTypeDesc); Connection con=null; try{ con=dbUtil.getCon(); int modifyNum=goodsTypeDao.update(con,goodsType); if(modifyNum==1){ JOptionPane.showMessageDialog(null,"修改成功"); this.resetValue(); this.fillTable(new GoodsType()); }else{ JOptionPane.showMessageDialog(null,"修改失败"); } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } //查询商品类型 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { String t_goodsTypeName=this.jTextField2.getText(); GoodsType goodsType=new GoodsType(); goodsType.setGoodsTypeName(t_goodsTypeName); this.fillTable(goodsType); } //插入商品类型 private void fillTable(GoodsType goodsType){ DefaultTableModel dtm=(DefaultTableModel)jTable1.getModel(); dtm.setRowCount(0); Connection con=null; try{ con=dbUtil.getCon(); ResultSet rs=goodsTypeDao.list(con,goodsType); while(rs.next()){ Vector v=new Vector(); v.add(rs.getString("id")); v.add(rs.getString("goodsTypeName")); v.add(rs.getString("goodsTypeDesc")); dtm.addRow(v); } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } //修改后重置 private void resetValue(){ this.idTxt.setText(""); this.goodsTypeNameTxt.setText(""); this.goodsTypeDescTxt.setText(""); }- 1
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7、主菜单之商品管理：
核心代码：
//查询 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { String t_goodsName=this.s_goodsNameTxt.getText(); Goods goods=new Goods(); goods.setGoodsName(t_goodsName); this.fillTable(goods); } //下拉框 private void fillGoodsType(String type){ Connection con=null; GoodsType goodsType=null; try{ con=dbUtil.getCon(); ResultSet rs=goodsTypeDao.list(con,new GoodsType()); if("search".equals(type)){ goodsType=new GoodsType(); goodsType.setGoodsTypeName("请选择"); goodsType.setId(-1); this.s_goodsJcb.addItem(goodsType); } while(rs.next()){ goodsType=new GoodsType(); goodsType.setGoodsTypeName(rs.getString("goodsTypeName")); goodsType.setId(rs.getInt("id")); if("search".equals(type)){ this.s_goodsJcb.addItem(goodsType); }else if("modify".equals(type)){ } } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } //表 private void fillTable(Goods goods){ DefaultTableModel dtm=(DefaultTableModel) jTable1.getModel(); dtm.setRowCount(0); Connection con=null; try{ con=dbUtil.getCon(); ResultSet rs=goodsDao.list(con,goods); while(rs.next()){ Vector v=new Vector(); v.add(rs.getInt("id")); v.add(rs.getString("goodsName")); v.add(rs.getFloat("price")); v.add(rs.getString("goodsDesc")); dtm.addRow(v); } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } //鼠标点击表格事件 private void jTable1MousePressed(java.awt.event.MouseEvent evt) { int row=jTable1.getSelectedRow(); this.idTxt.setText((Integer)jTable1.getValueAt(row,0)+""); this.goodsNameTxt.setText((String)jTable1.getValueAt(row,1)); this.priceTxt.setText((Float)jTable1.getValueAt(row,2)+""); this.goodsDescTxt.setText((String)jTable1.getValueAt(row,3)); } //鼠标单击后，修改 private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { String id=this.idTxt.getText(); if(StringUtil.isEmpty(id)){ JOptionPane.showMessageDialog(null,"请选择要修改的记录"); return; } String goodsName=this.goodsNameTxt.getText(); String price=this.priceTxt.getText(); String goodsDesc=this.goodsDescTxt.getText(); if(StringUtil.isEmpty(goodsName)){ JOptionPane.showMessageDialog(null,"商品名称不能为空"); return; } if(StringUtil.isEmpty(price)){ JOptionPane.showMessageDialog(null,"商品价钱不能为空"); return; } if(StringUtil.isEmpty(goodsDesc)){ JOptionPane.showMessageDialog(null,"商品描述不能为空"); return; } Goods goods=new Goods(Integer.parseInt(id),goodsName, Float.parseFloat(price),goodsDesc); Connection con=null; try{ con=dbUtil.getCon(); int modifyNum=goodsDao.update(con,goods); if(modifyNum==1){ JOptionPane.showMessageDialog(null,"修改成功"); this.resetValue(); this.fillTable(new Goods()); }else{ JOptionPane.showMessageDialog(null,"修改失败"); } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } //鼠标单击后删除 private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) { String id=idTxt.getText(); if(StringUtil.isEmpty(id)){ JOptionPane.showMessageDialog(null,"请选择要删除的记录"); return; } int n=JOptionPane.showConfirmDialog(null,"Are you 确定delete this记录？"); if(n==0){ Connection con=null; try{ con=dbUtil.getCon(); int deleteNum=goodsDao.delete(con,id); if(deleteNum==1){ JOptionPane.showMessageDialog(null,"删除成功"); this.resetValue(); this.fillTable(new Goods()); }else{ JOptionPane.showMessageDialog(null,"删除失败"); } }catch (Exception e){ e.printStackTrace(); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } } //修改后重置 private void resetValue(){ this.idTxt.setText(""); this.goodsNameTxt.setText(""); this.goodsDescTxt.setText(""); }- 1
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private void jButton2ActionPerformed(ActionEvent evt) { this.resetValue(); } //商品添加 private void jButton1ActionPerformed(ActionEvent evt){ String goodsName=this.goodsNameTxt.getText(); String price=this.priceTxt.getText(); String goodsDesc=this.goodsDecTxt.getText(); if(StringUtil.isEmpty(goodsName)){ JOptionPane.showMessageDialog(null,"商品类别名称不能为空"); return; } if(StringUtil.isEmpty(price)){ JOptionPane.showMessageDialog(null,"商品价格不能为空"); return; } GoodsType goodsType=(GoodsType)goodsTypeJcb.getSelectedItem(); int goodsTypeId=goodsType.getId(); Goods goods=new Goods(goodsName,Float.parseFloat(price),goodsDesc); Connection con=null; try{ con=dbUtil.getCon(); int addNum=goodsDao.add(con,goods); if(addNum==1){ JOptionPane.showMessageDialog(null,"商品添加成功"); resetValue(); }else{ JOptionPane.showMessageDialog(null,"商品添加失败"); } }catch (Exception e){ e.printStackTrace(); JOptionPane.showMessageDialog(null,"商品添加失败"); }finally { try{ dbUtil.closeCon(con); }catch (Exception e){ e.printStackTrace(); } } } /** * 重置表单 */ private void resetValue(){ this.goodsNameTxt.setText(""); this.priceTxt.setText(""); this.goodsDecTxt.setText(""); if(this.goodsTypeJcb.getItemCount()>0){ this.goodsTypeJcb.setSelectedIndex(0); } } //初始化商品类别下拉框 private void fillGoodsType(){ Connection con=null; GoodsType goodsType=null; try{ con=dbUtil.getCon(); ResultSet rs=goodsTypeDao.list(con,new GoodsType()); while(rs.next()){ goodsType=new GoodsType(); goodsType.setId(rs.getInt("id")); goodsType.setGoodsTypeName(rs.getString("goodsTypeName")); this.goodsTypeJcb.addItem(goodsType); } }catch (Exception e){ e.printStackTrace(); }finally { } }- 1
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8、退出：