实验五图形用户界面的设计与实现Word格式文档下载.docx
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- 上传时间:2023-02-03
- 格式:DOCX
- 页数:18
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实验五图形用户界面的设计与实现Word格式文档下载.docx
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//数据库连接地址
privateStringdbUserName="
root"
//用户名
privateStringdbPassword="
123456"
//密码
privateStringjdbcName="
com.mysql.jdbc.Driver"
//驱动名称
/**
*获取数据库连接
*@return
*@throwsException
*/
publicConnectiongetCon()throwsException{
Class.forName(jdbcName);
Connectioncon=DriverManager.getConnection(dbUrl,dbUserName,dbPassword);
returncon;
}
*关闭数据库连接
*@paramcon
publicvoidcloseCon(Connectioncon)throwsException{
if(con!
=null){
con.close();
}
publicstaticvoidmain(String[]args){
DbUtildbUtil=newDbUtil();
try{
dbUtil.getCon();
System.out.println("
数据库连接成功!
"
);
}catch(Exceptione){
//TODOAuto-generatedcatchblock
e.printStackTrace();
数据库连接失败"
}
用户实体
/**
*用户实体
*@authorAdministrator
*
publicclassUser{
privateintid;
//编号
privateStringuserName;
privateStringpassword;
publicUser(){
super();
//TODOAuto-generatedconstructorstub
publicUser(StringuserName,Stringpassword){
this.userName=userName;
this.password=password;
publicintgetId(){
returnid;
publicvoidsetId(intid){
this.id=id;
publicStringgetUserName(){
returnuserName;
publicvoidsetUserName(StringuserName){
publicStringgetPassword(){
returnpassword;
publicvoidsetPassword(Stringpassword){
*用户Dao类
publicclassUserDao{
*登录验证
*@paramuser
publicUserlogin(Connectioncon,Useruser)throwsException{
UserresultUser=null;
Stringsql="
select*fromt_userwhereuserName=?
andpassword=?
PreparedStatementpstmt=con.prepareStatement(sql);
pstmt.setString(1,user.getUserName());
pstmt.setString(2,user.getPassword());
ResultSetrs=pstmt.executeQuery();
if(rs.next()){
resultUser=newUser();
resultUser.setId(rs.getInt("
id"
));
resultUser.setUserName(rs.getString("
userName"
resultUser.setPassword(rs.getString("
password"
returnresultUser;
publicclassJavaInterFrmextendsJInternalFrame{
*Launchtheapplication.
EventQueue.invokeLater(newRunnable(){
publicvoidrun(){
try{
Java1234InterFrmframe=newJava1234InterFrm();
frame.setVisible(true);
}catch(Exceptione){
e.printStackTrace();
}
}
});
*Createtheframe.
publicJava1234InterFrm(){
getContentPane().setBackground(Color.RED);
setIconifiable(true);
setClosable(true);
setTitle("
\u5173\u4E8EJava1234"
setBounds(100,100,450,300);
JLabellblNewLabel=newJLabel("
lblNewLabel.setIcon(newImageIcon(Java1234InterFrm.class.getResource("
/images/java1234.png"
)));
GroupLayoutgroupLayout=newGroupLayout(getContentPane());
groupLayout.setHorizontalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addGap(98)
.addComponent(lblNewLabel)
.addContainerGap(126,Short.MAX_VALUE))
);
groupLayout.setVerticalGroup(
.addGap(48)
.addContainerGap(149,Short.MAX_VALUE))
getContentPane().setLayout(groupLayout);
登录界面的代码:
publicclassLogOnFrmextendsJFrame{
privateJPanelcontentPane;
privateJTextFielduserNameTxt;
privateJPasswordFieldpasswordTxt;
privateDbUtildbUtil=newDbUtil();
privateUserDaouserDao=newUserDao();
LogOnFrmframe=newLogOnFrm();
publicLogOnFrm(){
//改变系统默认字体
Fontfont=newFont("
Dialog"
Font.PLAIN,12);
java.util.Enumerationkeys=UIManager.getDefaults().keys();
while(keys.hasMoreElements()){
Objectkey=keys.nextElement();
Objectvalue=UIManager.get(key);
if(valueinstanceofjavax.swing.plaf.FontUIResource){
UIManager.put(key,font);
setResizable(false);
\u7BA1\u7406\u5458\u767B\u5F55"
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100,100,450,343);
contentPane=newJPanel();
contentPane.setBorder(newEmptyBorder(5,5,5,5));
setContentPane(contentPane);
\u56FE\u4E66\u7BA1\u7406\u7CFB\u7EDF"
lblNewLabel.setFont(newFont("
宋体"
Font.BOLD,23));
lblNewLabel.setIcon(newImageIcon(LogOnFrm.class.getResource("
/images/logo.png"
JLabellblNewLabel_1=newJLabel("
\u7528\u6237\u540D\uFF1A"
lblNewLabel_1.setIcon(newImageIcon(LogOnFrm.class.getResource("
/images/userName.png"
JLabellblNewLabel_2=newJLabel("
\u5BC6\u7801\uFF1A"
lblNewLabel_2.setIcon(newImageIcon(LogOnFrm.class.getResource("
/images/password.png"
userNameTxt=newJTextField();
userNameTxt.setColumns(10);
passwordTxt=newJPasswordField();
JButtonbtnNewButton=newJButton("
\u767B\u5F55"
btnNewButton.addActionListener(newActionListener(){
publicvoidactionPerformed(ActionEvente){
loginActionPerformed(e);
btnNewButton.setIcon(newImageIcon(LogOnFrm.class.getResource("
/images/login.png"
JButtonbtnNewButton_1=newJButton("
\u91CD\u7F6E"
btnNewButton_1.addActionListener(newActionListener(){
resetValueActionPerformed(e);
btnNewButton_1.setIcon(newImageIcon(LogOnFrm.class.getResource("
/images/reset.png"
GroupLayoutgl_contentPane=newGroupLayout(contentPane);
gl_contentPane.setHorizontalGroup(
gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addGroup(gl_contentPane.createSequentialGroup()
.addGap(111)
.addComponent(lblNewLabel))
.addGap(101)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
.addComponent(lblNewLabel_1)
.addComponent(lblNewLabel_2)
.addComponent(btnNewButton))
.addGap(32)
.addComponent(btnNewButton_1)
.addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING,false)
.addComponent(passwordTxt)
.addComponent(userNameTxt,GroupLayout.DEFAULT_SIZE,128,Short.MAX_VALUE)))))
.addContainerGap(111,Short.MAX_VALUE))
gl_contentPane.setVerticalGroup(
.addGap(30)
.addGap(26)
.addComponent(lblNewLabel_1)
.addGap(29)
.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE)
.addComponent(passwordTxt,GroupLayout.PREFERRED_SIZE,GroupLayout.DEFAULT_SIZE,GroupLayout.PREFERRED_SIZE)))
.addComponent(userNameTxt,GroupLayout.PREFERRED_SIZE,GroupLayout.DEFAULT_SIZE,GroupLayout.PREFERRED_SIZE))
.addGap(36)
.addGroup(gl_contentPane.createParallelGroup(Alignment.BASELINE)
.addComponent(btnNewButton)
.addComponent(btnNewButton_1))
.addContainerGap(60,Short.MAX_VALUE))
contentPane.setLayout(gl_contentPane);
//设置JFrame居中显示
this.setLocationRelativeTo(null);
*登录事件处理
*@parame
privatevoidloginActionPerformed(ActionEventevt){
StringuserName=this.userNameTxt.getText();
Stringpassword=newString(this.passwordTxt.getPassword());
if(StringUtil.isEmpty(userName)){
JOptionPane.showMessageDialog(null,"
用户名不能为空!
return;
if(StringUtil.isEmpty(password)){
密码不能为空!
Useruser=newUser(userName,password);
Connectioncon=null;
con=dbUtil.getCon();
UsercurrentUser=userDao.login(con,user);
if(currentUser!
dispose();
newMainFrm().setVisible(true);
}else{
JOptionPane.showMessageDialog(null,"
用户名或者密码错误!
*重置事件处理
privatevoidresetValueActionPerformed(ActionEventevt){
this.userNameTxt.setText("
this.passwordTxt.setText("
系统界面代码:
publicclassMainFrmextendsJFrame{
privateJDesktopPanetable=null;
MainFrmframe=newMainFrm();
*Createth
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- 关 键 词:
- 实验 图形 用户界面 设计 实现