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//添加操作 public void btnInsert_actionPerformed(ActionEvent e) { String name = this.txtName.getText().trim(); String sex = this.txtSex.getText().trim(); String grade = this.txtGrade.getText().trim(); String score = this.txtScore.getText().trim(); if (name.equals("") || sex.equals("") || grade.equals("") || score.equals("")) { JOptionPane.showMessageDialog(this, "您输入的不合法!"); } String sqlString = "insert into Score values('" + name + "','" + sex + "','" + grade + "','" + score + "')"; int rows = db.exeUpdate(sqlString); if (rows == 0) { JOptionPane.showMessageDialog(this, "添加失败!"); } else { JOptionPane.showMessageDialog(this, " 添加成功! "); } }
//删除操作 public void btnDelect_actionPerformed(ActionEvent e) { String name = this.txtName.getText().trim(); if (name.equals("")) { JOptionPane.showMessageDialog(this, "你输入的数据不完整"); return; } String sqlString = "delete from Score where Name='" + name + "'"; int rows = db.exeUpdate(sqlString); if (rows == 0) { JOptionPane.showMessageDialog(this, "删除失败"); return; } else { JOptionPane.showMessageDialog(this, "删除成功"); } }
//查询操作 public void btnSelect_actionPerformed(ActionEvent e) { String name = this.txtName.getText().trim(); if (name.equals("")) { JOptionPane.showMessageDialog(this, "查找条件不完整"); return; } String sqlString = "select * from Score where name='" + name + "'"; Vector rs = db.exeQuery(sqlString); if (rs.size() == 0) { JOptionPane.showMessageDialog(this, "查找失败");
} String Sex = ((Vector) rs.get(0)).get(2).toString(); String Grade = ((Vector) rs.get(0)).get(3).toString(); String Sore = ((Vector) rs.get(0)).get(4).toString();
this.txtSex.setText(Sex); this.txtGrade.setText(Grade); this.txtScore.setText(Sore);
}
//更新操作 public void btnUpdate_actionPerformed(ActionEvent e) { String name = this.txtName.getText().trim(); String sex = this.txtSex.getText().trim(); String grade = this.txtGrade.getText().trim(); String score = this.txtScore.getText().trim(); if (name.equals("") || sex.equals("") || grade.equals("") || score.equals("")) { JOptionPane.showMessageDialog(this, "您输入的数据不合法!!"); return; } String sqlString = "update Score set Sex='" + sex + "',Grade = '" + grade + "',Score='" + score + "' where Name='" + name + "'"; int rows = db.exeUpdate(sqlString); if (rows == 0) { JOptionPane.showMessageDialog(this, "更新失败!"); } else { JOptionPane.showMessageDialog(this, "更新成功!"); }
}
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