Java程序设计课程设计产品管理系统 第8页
xYLayout1.setHeight(239);
this.setTitle("用户登录");
getContentPane().add(panel1, new XYConstraints(0, 0, -1, -1));
this.getContentPane().add(jLabel1, new XYConstraints(86, 49, 99, 34));
this.getContentPane().add(jLabel2, new XYConstraints(88, 98, 80, 34));
this.getContentPane().add(jTextFieldusername, new XYConstraints(203, 50, 111, 31));
this.getContentPane().add(jPasswordold, new XYConstraints(204, 93, 110, 33));
this.getContentPane().add(jButtonCancel, new XYConstraints(201, 162, 94, 32));
this.getContentPane().add(jButtonOK, new XYConstraints(89, 163, 91, 31));
}
void jButtonCancel_mouseClicked(MouseEvent e) {
this.dispose();
}
//操作员登陆
void jButtonOK_mouseClicked(MouseEvent e) {
//检验用户名是否为空
if(jTextFieldusername.getText().toString().trim().equals("") )
{ JOptionPane.showMessageDialog(null,"用户名不可为空！");
return;}
//检验密码是否为空
if(jPasswordold.getText().toString().trim().equals("") )
{JOptionPane.showMessageDialog(null,"密码不可为空！");
return;}
//定义字符串对象,代表sql语句
String strSQL ;
//生成sql语句，用户名和密码从相应文本框取得
strSQL="select*fromuserwhere Username='"+jTextFieldusername.getText().toString().trim() +"' and Password='"+jPasswordold.getText().toString().trim()+"'";
//由DBManager对象执行查询过程
rs=db.getResult(strSQL) ;
//判断结果集是否为空
boolean isexist=false;
try {
isexist = rs.first();
}
catch (SQLException ex1) {
}
//若为空，则说明用户名不存在或密码不正确，弹出警告信息，并设定主窗体权限为无
if(!isexist )
{JOptionPane.showMessageDialog(null,"用户名不存在，或密码不正确！");
myMain.setEnable(false,false);
}
//若不为空，则说明用户名存在且密码正确，设定主窗体权限为有
else
{
try {
rs.first();
//若为管理员...
if (rs.getString("Power").equals("管理员")) {
myMain.setEnable(true, true);
this.dispose();
}
//若为操作员
else {
myMain.setEnable(true, false);
this.dispose();
}
}
catch (SQLException ex) {
}
}
}
}若图片无法显示请联系QQ3249114,本论文免费,转发请注明源于www.751com.cn
public void mouseClicked(MouseEvent e) {
adaptee.jButtonCancel_mouseClicked(e);
}
}
class userLogin_jButtonOK_mouseAdapter extends java.awt.event.MouseAdapter {
userLogin adaptee;
userLogin_jButtonOK_mouseAdapter(userLogin adaptee) {
this.adaptee = adaptee;
}
public void mouseClicked(MouseEvent e) {
adaptee.jButtonOK_mouseClicked(e);
}
}
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