結(jié)構(gòu)：

（5到8）

5

package denglu;

public class gongjvClass {

public static String uname = "";

}

6

package denglu;

public class main {

public static void main(String[] args) {

new denglu();

// new zhuce();

// new zhmm();

// new zhaohuimima();

}

}

7

package denglu;

import java.awt.Color;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import java.sql.ResultSet;

import java.sql.SQLException;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JTextField;

class shijian_zhmm implements FocusListener, ActionListener {

public zhaoHuiMiMa shijian_zhaoHuiMiMa1 = null;

public shijian_zhmm(zhaoHuiMiMa shijian_zhaoHuiMiMa2) {

this.shijian_zhaoHuiMiMa1 = shijian_zhaoHuiMiMa2;

}

@Override

public void actionPerformed(ActionEvent arg0) {

String String_uname = shijian_zhaoHuiMiMa1.txt_uname.getText().trim();

String String_wenti = shijian_zhaoHuiMiMa1.txt_wenti.getText().trim();

String String_daan = shijian_zhaoHuiMiMa1.txt_daan.getText().trim();

String sql = "select * from yonghu where yh_Uname='" + String_uname

+ "'and yh_Q='" + String_wenti + "'and yh_A='" + String_daan + "'";

ResultSet res = DBUtils.Select(sql);

try {

if (res.next()) {

new chongzhimimajiemian();

gongjvClass.uname = String_uname;

} else {

//JOptionPane.showMessageDialog（null,"XXX"）是用來提示用戶答案輸入錯誤的格式

JOptionPane.showMessageDialog(null, "答案輸入錯誤");

shijian_zhaoHuiMiMa1.lb_daan1.setText("答案輸入錯誤");

shijian_zhaoHuiMiMa1.lb_daan1.setForeground(Color.red);

}

} catch (SQLException e) {

e.printStackTrace();

}

}

@Override

public void focusGained(FocusEvent arg0) {

//focusGained(FocusEvent arg0)是 失去焦點(diǎn)事件的格式

}

@Override

public void focusLost(FocusEvent arg0) {

String uname = shijian_zhaoHuiMiMa1.txt_uname.getText().trim();

String sql = "select * from yonghu where yh_uname='" + uname + "'";

ResultSet res = DBUtils.Select(sql);

try {

if (res.next()) {

String shiJian_wenti = res.getString("yh_Q");

shijian_zhaoHuiMiMa1.txt_wenti.setText(shiJian_wenti);

shijian_zhaoHuiMiMa1.lb_uname1.setText("");

} else {

shijian_zhaoHuiMiMa1.lb_uname1.setText("用戶名錯誤");

shijian_zhaoHuiMiMa1.lb_uname1.setForeground(Color.red);

}

} catch (SQLException e) {

e.printStackTrace();

}

}

}

public class zhaoHuiMiMa extends JFrame {

static JButton btn_queren, btn_quxiao = null;

static JLabel lb_uname, lb_wenti, lb_daan = null;

static JLabel lb_uname1, lb_wenti1, lb_daan1 = null;

/*

* 找回密碼思路:1.寫一個文本框用來填用戶名，用戶名需要添加焦點(diǎn)獲取事件，如果失去焦點(diǎn)后去數(shù)據(jù)庫查詢用戶輸入

* 的用戶名是否存在，如果存在就將其問題查詢出來,添加到第二 個文本框上(第二個文本框是不能手動輸

* 入的),讓用戶輸入答案，輸入完畢后點(diǎn)擊確定按鈕時判斷用戶名，問題和答案是否一致， 如果一致說明 用戶輸入的答案是正確的，

* 之后跳到重置密碼界面

*/

static JTextField txt_uname, txt_wenti, txt_daan = null;

public zhaoHuiMiMa() {

// 基本必須的內(nèi)容：布局方式、大小居中、釋放資源(找回密碼頁面不需要釋放資源)、顯示

// 布局方式

this.setTitle("找回密碼頁面");

this.setLayout(null);

// 大小居中

this.setSize(500, 500);

this.setLocationRelativeTo(null);

lb_uname = new JLabel("用戶名");

lb_wenti = new JLabel("問題");

lb_daan = new JLabel("答案");

lb_uname1 = new JLabel("請輸入用戶名");

lb_daan1 = new JLabel("請輸入答案");

txt_uname = new JTextField();

txt_wenti = new JTextField();

txt_daan = new JTextField();

txt_uname.addFocusListener(new shijian_zhmm(this));

lb_uname1.setForeground(Color.blue);

lb_daan1.setForeground(Color.blue);

lb_uname.setBounds(100, 100, 100, 30);

lb_wenti.setBounds(100, 140, 100, 30);

lb_daan.setBounds(100, 180, 100, 30);

lb_uname1.setBounds(310, 105, 100, 30);

lb_daan1.setBounds(310, 185, 100, 30);

this.add(lb_uname);

this.add(lb_wenti);

this.add(lb_daan);

this.add(lb_uname1);

this.add(lb_daan1);

txt_uname.setBounds(210, 100, 100, 30);

txt_wenti.setBounds(210, 140, 100, 30);

txt_wenti.setEditable(false);

txt_daan.setBounds(210, 180, 100, 30);

this.add(txt_uname);

this.add(txt_wenti);

this.add(txt_daan);

btn_queren = new JButton("確認(rèn)且回答正確后跳轉(zhuǎn)重置密碼頁面");

btn_queren.addActionListener(new shijian_zhmm(this));

btn_quxiao = new JButton("取消");

btn_queren.setBounds(10, 230, 290, 30);

btn_quxiao.setBounds(340, 230, 70, 30);

this.add(btn_queren);

this.add(btn_quxiao);

// 顯示

this.setVisible(true);

}

}

8

package denglu;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.ArrayList;

import javax.swing.ButtonGroup;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPasswordField;

import javax.swing.JRadioButton;

import javax.swing.JTextArea;

import javax.swing.JTextField;

class shijian_zhuce implements ActionListener {

public static zhuCe chuangkouneirong2 = null;

public shijian_zhuce(zhuCe shangPinLeiXingXiaLaKuang1) {

this.chuangkouneirong2 = shangPinLeiXingXiaLaKuang1;

// chuangkouneirong窗口內(nèi)容

}

@Override

public void actionPerformed(ActionEvent arg0) {

JOptionPane.showMessageDialog(null, "點(diǎn)擊了注冊按鈕");

String String_uname = chuangkouneirong2.JTextField_uname.getText();// 得到用戶名

String String_pwd = chuangkouneirong2.JPasswordField_pwd1.getText();// 得到密碼

String String_pwd1 = chuangkouneirong2.JPasswordField_pwd2.getText();// 得到確認(rèn)密碼

String String_TureName = chuangkouneirong2.JTextField_name.getText();// 得到用戶名

String String_age = chuangkouneirong2.JComboBox_age.getSelectedItem().toString();

// String String_age = zc.JTextField_age.getText();// 得到年齡

String String_sex = "男";

// 判斷用戶是否選擇是女:

if (chuangkouneirong2.rb2.isSelected()) {

String_sex = "女";

}

String String_phone = chuangkouneirong2.JTextField_phone.getText();// 得到電話號碼

// String String_address = zc.JTextField_address.getText();// 得到地址

ArrayList<String> jiHe = new ArrayList<String>();

// jiHe集合

if (chuangkouneirong2.address1.isSelected()) {

jiHe.add(chuangkouneirong2.address1.getText());

}

if (chuangkouneirong2.address2.isSelected()) {

jiHe.add(chuangkouneirong2.address2.getText());

}

if (chuangkouneirong2.address3.isSelected()) {

jiHe.add(chuangkouneirong2.address3.getText());

}

String String_address = null;

for (int i = 0; i < jiHe.size(); i++) {

String_address += jiHe.get(i) + ":";// 將集合中的內(nèi)容轉(zhuǎn)換為字符串

}

String String_jieshao = chuangkouneirong2.JTextArea_jieshao.getText();// 得到介紹

String String_Q = chuangkouneirong2.JTextField_Q.getText();// 得到問題

String String_A = chuangkouneirong2.JTextField_A.getText();// 得到答案

// 判斷兩次輸入的秘密是否一致:

if (!String_pwd.equals(String_pwd1)) {

JOptionPane.showMessageDialog(null, "兩次密碼輸入不一致， 請重新輸入");

return;

}

String sql_panduanuname = "select * from yonghu where yh_uname='"

+ String_uname + "'";

ResultSet res_select_uname = DBUtils.Select(sql_panduanuname);

try {

if (res_select_uname.next()) {

JOptionPane.showMessageDialog(null, "用戶名已經(jīng)存在了，請重新輸入");

return;

}

} catch (SQLException e) {

e.printStackTrace();

}

String sql = "insert into yonghu values('" + String_uname + "','"

+ String_pwd + "','"

+ String_TureName + "'," + String_age + ",'" + String_sex

+ "','" + String_phone + "','" + String_address + "','"

+ String_jieshao + "','" + String_Q + "','" + String_A + "'"

+ ")";

if (DBUtils.ZSG(sql)) {

JOptionPane.showMessageDialog(null, "注冊成功");

} else {

JOptionPane.showMessageDialog(null, "出現(xiàn)了未知的錯誤，請重試");

}

}

}

public class zhuCe extends JFrame {

// 愛好使用復(fù)選框來做

static JCheckBox address1, address2, address3 = null;

public static JButton JButton_zhuce = null;

// 使用下拉框來當(dāng)年齡

static JComboBox JComboBox_age = null;

public static JPasswordField JPasswordField_pwd1,

JPasswordField_pwd2 = null;

// public static JTextArea jta_adress, jta_jieshao = null;

/* JTextArea類是一 個顯示純文本的多行(DuoHang)區(qū)域。 */

static JTextArea JTextArea_jieshao = null;

public static JTextField JTextField_uname, JTextField_name,

JTextField_phone, JTextField_jieshao, JTextField_Q,

JTextField_A = null;

public static JLabel lb_uname, lb_pwd, lb_qrpwd, lb_name, lb_age, lb_sex,

lb_phone, lb_address, lb_jieshao, lb_Q, lb_A = null;

// 性別使用JRadioButton來做

static JRadioButton rb1, rb2 = null;

public zhuCe() {

this.setLayout(null);

this.setSize(600, 700);

this.setTitle("注冊界面");

this.setLocationRelativeTo(null);

lb_uname = new JLabel("用戶名");

lb_pwd = new JLabel("用戶密碼");

lb_qrpwd = new JLabel("確認(rèn)密碼");

lb_name = new JLabel("真實(shí)姓名");

lb_age = new JLabel("年齡");

lb_sex = new JLabel("性別");

lb_phone = new JLabel("電話");

lb_address = new JLabel("地址");

lb_jieshao = new JLabel("介紹");

lb_Q = new JLabel("問題");

lb_A = new JLabel("答案");

lb_uname.setBounds(80, 100, 70, 30);

lb_pwd.setBounds(80, 140, 70, 30);

lb_qrpwd.setBounds(80, 180, 70, 30);

lb_name.setBounds(80, 220, 70, 30);

lb_age.setBounds(80, 260, 70, 30);

lb_sex.setBounds(80, 300, 70, 30);

lb_phone.setBounds(80, 340, 70, 30);

lb_address.setBounds(80, 380, 70, 30);

lb_jieshao.setBounds(80, 420, 70, 30);

lb_Q.setBounds(80, 460, 70, 30);

lb_A.setBounds(80, 500, 70, 30);

this.add(lb_uname);

this.add(lb_pwd);

this.add(lb_qrpwd);

this.add(lb_name);

this.add(lb_age);

this.add(lb_sex);

this.add(lb_phone);

this.add(lb_address);

this.add(lb_jieshao);

this.add(lb_Q);

this.add(lb_A);

JTextField_uname = new JTextField();

JPasswordField_pwd1 = new JPasswordField();

JPasswordField_pwd2 = new JPasswordField();

JTextField_name = new JTextField();

rb1 = new JRadioButton("男", true);

rb2 = new JRadioButton("女");

this.add(rb1);

this.add(rb2);

JComboBox_age = new JComboBox();

ButtonGroup bg = new ButtonGroup();

bg.add(rb1);

bg.add(rb2);

for (int i = 18; i < 60; i++) {

JComboBox_age.addItem(i);

}

this.add(JComboBox_age);

// JTextField_age = new JTextField();

// JTextField_sex = new JTextField();

JTextField_phone = new JTextField();

// JTextField_address = new JTextField();

address1 = new JCheckBox("中國", true);

address2 = new JCheckBox("日本");

address3 = new JCheckBox("美國");

JTextField_Q = new JTextField();

JTextField_A = new JTextField();

JTextArea_jieshao = new JTextArea();

JTextArea_jieshao.setColumns(8);

JTextArea_jieshao.setRows(4);

JTextArea_jieshao.setLineWrap(true);

this.add(JTextArea_jieshao);

JTextField_uname.setBounds(160, 100, 140, 30);

JPasswordField_pwd1.setBounds(160, 140, 140, 30);

JPasswordField_pwd2.setBounds(160, 180, 140, 30);

JTextField_name.setBounds(160, 220, 140, 30);

// JTextField_age.setBounds(160, 260, 140, 30);

JComboBox_age.setBounds(160, 260, 140, 30);

// JTextField_sex.setBounds(160, 300, 140, 30);

rb1.setBounds(160, 300, 40, 30);

rb2.setBounds(200, 300, 40, 30);

JTextField_phone.setBounds(160, 340, 140, 30);

// JTextField_address.setBounds(160, 380, 140, 30);

address1.setBounds(160, 380, 80, 30);

address2.setBounds(240, 380, 70, 30);

address3.setBounds(320, 380, 70, 30);

JTextArea_jieshao.setBounds(160, 420, 140, 40);

JTextField_Q.setBounds(160, 460, 140, 30);

JTextField_A.setBounds(160, 500, 140, 30);

this.setLocationRelativeTo(null);

this.add(JTextField_uname);

this.add(JPasswordField_pwd1);

this.add(JPasswordField_pwd2);

this.add(JTextField_name);

// this.add(JTextField_age);

// this.add(JTextField_sex);

this.add(JTextField_phone);

// this.add(JTextField_address);

this.add(JTextField_Q);

this.add(JTextField_A);

this.add(address1);

this.add(address2);

this.add(address3);

JButton_zhuce = new JButton("確認(rèn)注冊");

JButton_zhuce.addActionListener(new shijian_zhuce(this));

JButton_zhuce.setBounds(100, 580, 120, 30);

this.add(JButton_zhuce);

// this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

}

效果：