上篇我们写了登录页面，没账号怎么登录呢？肯定就需要注册页面啦~~~~~~
二、注册页面（
若注册信息没有填写完整，直接点击注册按钮，会提示填写完整信息的提示框！~~~~~
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若注册信息填写错误较多，可以点击重置按钮一键清空信息框，重新填写~~~~~~~~~
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若注册过程中，两次输入密码不同，则弹出提醒框~~~~~~~~~~~
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若注册的账号已经注册过，则提示重新注册或者直接登录！~~~~~
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若所有信息符合要求，则成功注册！！！！！！！！！！！！！！！！！！！
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效果展示完毕，话不多说，看代码~~~~~~~~~~~~~~~~
package Library;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
class Register extends JFrame implements ActionListener{
//按钮
private JButton btnRegister,btnReset,btnCancel;
//标签
private JLabel Num,jLabelNum,Name,jLabelName,UserName,jLabelUserName,jLabelPwd,jLabelSurePwd,jLabelSex,jLabelAge,jLabelClass;//学号，姓名，用户名，密码，确认密码，性别，年龄，所属班级
//用户名文本框
private JTextField jtNum,jtName,jtUserName,jtAge;
//密码文本框
private JPasswordField jtPwd,jtSurePwd;
//性别选项
private JRadioButton man,woman;
//班级下拉菜单
private JComboBox jtClass;
//下拉框
private JComboBox jcb;
//创建窗口
public Register(String string){
this.setTitle("用户注册");
//Container cp = this.getContentPane();
//cp.setLayout(new BorderLayout());
this.setLayout(new FlowLayout());
UserName = new JLabel(" 用户注册 ",JLabel.CENTER);
UserName.setFont(new Font("楷体",1,36));
this.add(UserName);
//设置字体大小
Font font = new Font("楷体",1,20);
jLabelNum = new JLabel("学 号：");
jLabelNum.setFont(font);
jtNum = new JTextField(20);
jLabelName = new JLabel("姓 名：");
jLabelName.setFont(font);
jtName = new JTextField(20);
jLabelUserName = new JLabel("用 户 名：");
jLabelUserName.setFont(font);
jtUserName = new JTextField(20);
jLabelPwd = new JLabel("密 码：");
jLabelPwd.setFont(font);
jtPwd = new JPasswordField(20);
jLabelSurePwd = new JLabel("确认密码：");
jLabelSurePwd.setFont(font);
jtSurePwd = new JPasswordField(20);
jLabelSex = new JLabel("性 别");
jLabelSex.setFont(font);
man = new JRadioButton("男");
man.setSelected(true);//默认选男性
man.setFont(font);
woman = new JRadioButton("女");
woman.setFont(font);
ButtonGroup group = new ButtonGroup();
group.add(man);
group.add(woman);
jLabelAge = new JLabel("年龄：");
jLabelAge.setFont(font);
jtAge = new JTextField(6);
jLabelClass = new JLabel("所属班级：");
jLabelClass.setFont(font);
String[] str = {"计算机科学与技术一班","计算机科学与技术二班","物联网工程班","网络工程班"};
jtClass = new JComboBox(str);
jtClass.setFont(new Font("楷体",1,18));
//按钮
btnRegister = new JButton("注册");
btnRegister.setFont(new Font("楷体",1,24));
btnRegister.addActionListener(this);
btnReset = new JButton("重置");
btnReset.setFont(new Font("楷体",1,24));
btnReset.addActionListener(this);
btnCancel = new JButton("取消");
btnCancel.setFont(new Font("楷体",1,24));
btnCancel.addActionListener(this);
JPanel pnrSouth = new JPanel();
//将按钮加到一个专门放按钮的容器中
pnrSouth.add(btnRegister);
pnrSouth.add(btnReset);
pnrSouth.add(btnCancel);
this.add(jLabelNum);
this.add(jtNum);
this.add(jLabelName);
this.add(jtName);
this.add(jLabelUserName);
this.add(jtUserName);
this.add(jLabelPwd);
this.add(jtPwd);
this.add(jLabelSurePwd);
this.add(jtSurePwd);
this.add(jLabelSex);
this.add(man);
this.add(woman);
this.add(jLabelAge);
this.add(jtAge);
this.add(jLabelClass);
this.add(jtClass);
this.add(pnrSouth,BorderLayout.SOUTH);//将放按钮的容器加到主容器中
this.setSize(400,380);
GUIUtil.toCenter(this);//使窗口居中
this.setVisible(true);//可视化
this.setResizable(false);//关闭放大窗口
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置错误关闭操作
}
@Override
public void actionPerformed(ActionEvent e) {
JButton jb = (JButton) e.getSource();
/*********************重置按钮***********************/
if(jb == btnReset){
//readInfo();
jtNum.setText("");
jtName.setText("");
jtUserName.setText("");
jtPwd.setText("");
jtSurePwd.setText("");
man.setSelected(true);
jtAge.setText("");
jtClass.setSelectedIndex(0);//选中第一个班级（计算机科学与技术一班）
/********************注册按钮************************/
}else if(jb == btnRegister){
String num = jtNum.getText().trim();
String name = jtName.getText().trim();
String username = jtUserName.getText().trim();
String pwd = new String(jtPwd.getPassword());
String surepwd = new String(jtSurePwd.getPassword());
String sex = man.isSelected()?"男":"女";
String age = jtAge.getText().trim();
String clas = (String)jtClass.getSelectedItem();
if(num.equals("")||name.equals("")||username.equals("")||
pwd.equals("")||surepwd.equals("")||age.equals("")){//判断资料是否填写完整
JOptionPane.showMessageDialog(null, "请完整填写所有的信息！","提示",JOptionPane.WARNING_MESSAGE);
return;
}
if(!pwd.equals(surepwd)){//判断两次输入密码是否相同
JOptionPane.showMessageDialog(this, "两次输入的密码不同，请您重新输入！");
return;
}
FileOpe.getInfoByAccount(num);
if(User.num != null){//判断用户是否已经注册过
JOptionPane.showMessageDialog(this, "该用户已经注册，请您直接登录或者重新注册！");
this.dispose();
new Login("用户登录！");
return;
}
FileOpe.updateCustomer(num, name, username, pwd, sex, age, clas);
JOptionPane.showMessageDialog(this, "恭喜您，注册成功！");
this.dispose();
new Login("用户登录！");
}else if(jb == btnCancel){
this.dispose();
new Login("用户登录！");
}
}
}
OK，注册页面就展示完了，后面就是功能了!！！！！！！！！！！！！！！！！！
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