JavaQQ

zhanghao.setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.WHITE));
zhanghao.setFont(new Font("宋体",Font.PLAIN,13));
this.add(zhanghao);*/
// zhanghaowb = new JLabel(new ImageIcon("2.png"));
zidongdenglu = new JCheckBox("自动登录");
zidongdenglu.setBounds(200, 190, 100, 30);
this.add(zidongdenglu);
jizhumima = new JCheckBox("记住密码");
jizhumima.setBounds(100, 190, 100, 30);
} catch (InstantiationException e1) {
// TODO 自动生成 catch 块
e1.printStackTrace();
} catch (IllegalAccessException e1) {
// TODO 自动生成 catch 块
e1.printStackTrace();
QQLogin w = new QQLogin();
w.setVisible(true);
}
});*/
new QQLogin();
}
public void mouseClicked(MouseEvent e) {
// TODO 自动生成方法存根

Java实现QQ登陆图②：图③：好了，效果就是这样了，虽然实现了基本功能，但是还是不完美，比如说好友面板不能随着窗口改变大小而改变，不过应该已经可以解决了，只是还没实践，下面就发上源代码：一共有三个类：MemberModel.java //显示类QQ似好友标签信息的模板类；TestPane.java //添加多个模板的容器类；TestFrame.java //窗体类；核心部分是前面两个类，注意，第二个类的布局方式不能为空，否则不能是容器显示滚动条，这是实现这个面板功能的一个难题，因为我不怎么会使用其他的布局方式，就只经常用空布局，经过这次才知道，光用空布局是不行的，空布局的应用受到了太多的限制。

在TestPane.java中添加好友信息的方式应该是代码添加黑名单信息的方式，可在其他类中调用方法，传递参数（数组）过来，然后对信息模板进行初始化，还有面板上的信息模板从程序刚开始运行就生成了，只是设置了不可见，后点击相关分类标签后的可视与不可视是同理的，也就是说你有多少个好友就一直会有多少个JLabel存在你的面板上，只是你可能看不见他们，我感觉自己的实现方式不是很好。

还有在我所用的这种布局方式中，显示Label的宽度是一定的，我不知道怎么设置他的宽度和高度，所以通过在Label上添加了一个白色图标（185 X 60）来使Label变宽，然后再添加模板JPanel，如果网友们还有好的解决方法，希望不吝赐教。

下面是源码：MemberModel.java 的源代：package coolbaby6;import javax.swing.ImageIcon;import javax.swing.JPanel;import javax.swing.JButton;import java.awt.Color;import java.awt.Rectangle;import javax.swing.JLabel;import java.awt.Dimension;import java.awt.Font;public class MemberModel{private static final long serialVersionUID = 1L;public JButton jButton = null;//显示好友头像；public JPanel jPanel = new JPanel();//模板容器；private JLabel lb_nickName = null;//显示昵称；private int pic;private String nickname = null;private JLabel lb_mood = null;//显示心情；public MemberModel(int pic, String nickname, int len) {super();this.pic = pic;//头像编（有多种方法可以实现，这种最简单）this.nickname = nickname;//昵称；initialize();}private void initialize() {lb_mood = new JLabel();lb_mood.setBounds(new Rectangle(51, 30, 131, 20));lb_mood.setFont(new Font("Dialog", Font.PLAIN, 12));lb_mood.setText("世界上最遥远的距离不是生与死,而是我站在你面前你却不知道我爱你!");lb_mood.addMouseListener(new java.awt.event.MouseAdapter() {public void mouseEntered(java.awt.event.MouseEvent e) {exchangeEnter();lb_mood.setToolTipText(lb_mood.getText());}public void mouseExited(java.awt.event.MouseEvent e) {exchangeExited();}});lb_nickName = new JLabel();lb_nickName.setBounds(new Rectangle(52, 10, 80, 20));lb_nickName.setFont(new Font("Dialog", Font.BOLD, 14));lb_nickName.setText(nickname);jPanel.setSize(new Dimension(185, 60));jPanel.setLayout(null);jPanel.add(getJButton(), null);jPanel.add(lb_nickName, null);jPanel.add(lb_mood, null);jPanel.addMouseListener(new java.awt.event.MouseAdapter() {public void mouseExited(java.awt.event.MouseEvent e) {exchangeExited();//鼠标移出模板区，改变背景颜色；}public void mouseEntered(java.awt.event.MouseEvent e) {exchangeEnter();//鼠标移进模板区，改变背景颜色；}});}private void exchangeEnter() {jPanel.setBackground(new Color(192,224,248));}private void exchangeExited() {jPanel.setBackground(null);}private JButton getJButton() {if (jButton == null) {jButton = new JButton();jButton.setBounds(new Rectangle(8, 10, 40, 40));jButton.setBackground(new Color(236, 255, 236));jButton.setIcon(new ImageIcon("head/"+pic + ".jpg"));jButton.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseExited(java.awt.event.MouseEvent e) {exchangeExited();//鼠标移出模板区，改变背景颜色；}public void mouseEntered(java.awt.event.MouseEvent e) {exchangeEnter();//鼠标移进模板区，改变背景颜色；}});}return jButton;}}TestPane.java 的源代码：package coolbaby6;import javax.swing.BorderFactory;import javax.swing.JPanel;import javax.swing.JLabel;import javax.swing.BoxLayout;import javax.swing.ImageIcon;public class TestPane extends JPanel {private static final long serialVersionUID = 1L;private JLabel jLabel = null;private JLabel jLabel1 = null;private JLabel jLabel11 = null;private JLabel jLabel12 = null;private int clickF=0;private int clickB=0;public TestPane() {super();initialize();}private void initialize() {jLabel12 = new JLabel();jLabel12.setIcon(new ImageIcon("img/bg.jpg"));jLabel12.add(new MemberModel(3,"CoolBabY3",200).jPanel);jLabel12.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2)); jLabel11 = new JLabel();jLabel11.setIcon(new ImageIcon("img/bg.jpg"));jLabel11.add(new MemberModel(2,"CoolBabY2",200).jPanel);jLabel11.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2)); jLabel1 = new JLabel();jLabel1.setIcon(new ImageIcon("img/bg.jpg"));jLabel1.add(new MemberModel(1,"CoolBabY1",200).jPanel);jLabel1.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2)); jLabel = new JLabel();jLabel.setText("我的好友");jLabel.setIcon(new ImageIcon("img/ico.jpg"));jLabel.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2)); jLabel.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseClicked(java.awt.event.MouseEvent e) {clickF+=1;if(clickF%2==1){jLabel1.setVisible(false);jLabel11.setVisible(false);jLabel12.setVisible(false);jLabel.setIcon(new ImageIcon("img/ico2.jpg"));update();}else{jLabel1.setVisible(true);jLabel11.setVisible(true);jLabel12.setVisible(true);jLabel.setIcon(new ImageIcon("img/ico.jpg"));update();}}});this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));this.setSize(200, 408);this.setLocation(20, 5);this.add(jLabel, null);this.add(jLabel1, null);this.add(jLabel11, null);this.add(jLabel12, null);addJLabel();}private void update(){//更新UI界面；this.updateUI();}private void clickBlack2(JLabel []jb){//点击标签，将后面的标签全部设为不可视； for(int i=1;i<jb.length;i++){try{jb[i].setVisible(false);}catch(Exception e){e.printStackTrace();}}update();}private void clickBlack(JLabel []jb){//点击标签，将后面的标签全部设为可视；for(int i=1;i<jb.length;i++){try{jb[i].setVisible(true);}catch(Exception e){e.printStackTrace();}}update();}private void addJLabel(){//添加黑名单的内容；final JLabel []jb=new JLabel[7];jb[0] = new JLabel();jb[0].setText("黑名单");jb[0].setIcon(new ImageIcon("img/ico2.jpg"));jb[0].setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));jb[0].addMouseListener(new java.awt.event.MouseAdapter() {public void mouseClicked(java.awt.event.MouseEvent e) {clickB+=1;if(clickB%2==1){clickBlack(jb);jb[0].setIcon(new ImageIcon("img/ico.jpg"));}else{clickBlack2(jb);jb[0].setIcon(new ImageIcon("img/ico2.jpg"));}}});this.add(jb[0],null);for(int i=1;i<jb.length;i++){jb[i]=new JLabel();jb[i].setIcon(new ImageIcon("img/bg.jpg"));jb[i].setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));jb[i].add(new MemberModel((i+3),"CoolBabY"+(i+3),200).jPanel);jb[i].setVisible(false);this.add(jb[i],null);}}TestFrame.java 的源代码：package coolbaby6;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.ScrollPaneConstants;import javax.swing.SwingUtilities;public class TestFrame {private JFrame jFrame = null;private JPanel jContentPane = null;private JScrollPane scrollPane=null;public static void main(String[] args) {SwingUtilities.invokeLater(new Runnable() {public void run() {TestFrame application = new TestFrame();application.getJFrame().setVisible(true);}});}private JFrame getJFrame() {if (jFrame == null) {jFrame = new JFrame();jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);jFrame.setSize(230, 700);jFrame.setTitle("模拟实现QQ面板功能");jFrame.setContentPane(getJContentPane());}return jFrame;}private JScrollPane getScrollPane(){//给添加好友的容器JPanel添加滚动条；if(scrollPane==null){scrollPane=new JScrollPane(new TestPane());scrollPane.setBounds(20,5, 190, 600);scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLL BAR_NEVER );//不显示水平滚动条；return scrollPane;}private JPanel getJContentPane() {//实例化底层的容器JPanel；if (jContentPane == null) {jContentPane = new JPanel();jContentPane.setLayout(null);jContentPane.add(getScrollPane());}return jContentPane;}}能成功编译成功我的源代码的方略：①、建一个项目，按我的类名建3个类，将源代码拷贝进去；②、在项目根目录下建一个名为img的文件夹，将要用到的图片放进去。

JavaWeb（⼗三）使⽤javamail进⾏发送邮件，（使⽤QQ，163，新浪邮箱服务器） 加油加油。

--WZY⼀、发送邮件的原理 在了解其原理之前，先要知道两个协议，SMTP和POP3 SMTP:Simple Mail Transfer Protocol，即简单邮件传输协议，发送邮件的协议，默认端⼝，25 POP3:Post Office Protocol 3，即邮局协议，接收邮件的协议，默认端⼝，110 知道了这两个协议，下⾯来说说邮件发送和接收的原理图，分两种，相同邮件(QQ邮箱给QQ邮箱)和不同邮件(QQ邮箱给163邮箱)是不⼀样的。

解释： 为了⽅便起见，将新浪邮箱，list@称为⽤户A，将搜狐邮箱，wangwu@ 称为⽤户B ⽤户A(新浪邮箱，list@)给⽤户B(搜狐邮箱，wangwu@)发送⼀封邮件，那么整个过程就为图中的实线部分，⽤户A通过OutLook(浏览器或者客户端)登录⾃⼰的邮箱帐号，编写邮件，使⽤Smtp协议发送给Sina的邮件服务器中的Smtp服务器(专门⽤来发送的服务器)，然后在通过SMTP协议，传输给Sohu的邮件服务器中的Smtp服务器，然后通过Sohu的Smtp服务器将邮件发送给⽤户B的存储设备进⾏存储(每个⽤户都会有⼀个存储空间⽤来存储邮件的)，到这⾥，⽤户A就相当于发送成功了，因为已经到达了⽬的地，如果B⽤户需要查看邮件内容，必须通过POP3服务器将从⾃⼰的存储设备中拿到，然后返回到浏览器或者客户端中显⽰。

⽤户B给⽤户A发送⼀封邮件，那么整个过程就为图中的虚线部分，是和A给B发⼀样的步骤 ⽤户A给⼀个同样使⽤新浪邮箱的⽤户C发送⼀封邮件，那么其过程就简单的多了，先通过Smtp服务器，然后smtp服务器会将其发送到⽤户C的存储设备上，A发送邮件就成功了，⽤户C要显⽰⾃⼰邮箱中的邮件，那么就通过POP3服务器从⾃⼰存储设备中拿取所有邮件进⾏查看。

⼆、通过Java代码实现发送邮件 2.1、准备jar包 核⼼：mail.jar 依赖：activation.jar，邮件需要发送附件时使⽤ 2.2、使⽤163邮箱发送邮件 2.2.1、⾸先在163邮箱中注册⼀个帐号。

UserHelper..cs类代码using System;using System.Collections.Generic;using System.Text;namespace MyQQ{//记录登录的用户Idclass UserHelper{public static int loginId; //登录的用户Id}}using System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;namespace MyQQ{///<summary>///聊天窗体///</summary>public partial class ChatForm : Form{public int friendId; // 当前聊天的好友号码public string nickName; // 当前聊天的好友昵称public int faceId; // 当前聊天的好友头像Idpublic ChatForm(){InitializeComponent();}// 窗体加载时的动作private void ChatForm_Load(object sender, EventArgs e){// 设置窗体标题this.Text = string.Format("与{0}聊天中",nickName);// 设置窗体顶部显示的好友信息picFace.Image = ilFaces.Images[faceId];lblFriend.Text = string.Format("{0}({1})",nickName,friendId);// 读取所有的未读消息，显示在窗体中ShowMessage();}// 关闭窗体private void btnClose_Click(object sender, EventArgs e){this.Close();}// 发送消息private void btnSend_Click(object sender, EventArgs e){if (txtChat.Text.Trim() == "") // 不能发送空消息{MessageBox.Show("不能发送空消息！", "提示", MessageBoxButtons.OK, rmation);return;}else if (txtChat.Text.Trim().Length > 50){MessageBox.Show("消息内容过长，请分为几条发送！", "提示", MessageBoxButtons.OK, rmation);return;}else// 发送消息，写入数据库{// MessageTypeId:1-表示聊天消息，为简化操作没有读取数据表，到S2可以用常量或者枚举实现// MessageState:0-表示消息状态是未读int result = -1; // 表示操作数据库的结果string sql = string.Format("INSERT INTO Messages (FromUserId, ToUserId, Message, MessageTypeId,MessageState) VALUES ({0},{1},'{2}',{3},{4})",UserHelper.loginId, friendId, txtChat.Text.Trim(), 1, 0);try{// 执行命令SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();result = command.ExecuteNonQuery();}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}if (result != 1){MessageBox.Show("服务器出现意外错误！", "抱歉", MessageBoxButtons.OK, MessageBoxIcon.Error);}txtChat.Text = ""; // 输入消息清空this.Close();}}///<summary>///读取所有的未读消息，显示在窗体中///</summary>private void ShowMessage(){string messageIdsString = ""; // 消息的Id组成的字符串string message; // 消息内容string messageTime; // 消息发出的时间// 读取消息的SQL语句string sql = string.Format("SELECT Id, Message,MessageTime From Messages WHERE FromUserId={0} AND ToUserId={1} AND MessageTypeId=1 AND MessageState=0",friendId,UserHelper.loginId);try{SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();SqlDataReader reader = command.ExecuteReader();// 循环将消息添加到窗体上while (reader.Read()){messageIdsString += Convert.ToString(reader["Id"]) + "_";message = Convert.ToString(reader["Message"]);messageTime = Convert.ToDateTime(reader["MessageTime"]).ToString(); // 转换为日期类型，告诉学员lblMessages.Text += string.Format("\n{0} {1}\n{2}",nickName,messageTime,message);}reader.Close();}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}// 把显示出的消息置为已读if (messageIdsString.Length > 1){messageIdsString.Remove(messageIdsString.Length - 1);SetMessageRead(messageIdsString, '_');}}///<summary>///把显示出的消息置为已读///</summary>private void SetMessageRead(string messageIdsString, char separator){string[] messageIds = messageIdsString.Split(separator); // 分割出每个消息Idstring sql = "Update Messages SET MessageState=1 WHERE Id="; // 更新状态的SQL语句的固定部分string updateSql; // 执行的SQL语句try{SqlCommand command = new SqlCommand(); // 创建Command对象command.Connection = DBHelper.connection; // 指定数据库连接DBHelper.connection.Open(); // 打开数据库连接foreach (string id in messageIds){if (id != ""){updateSql = sql + id; // 补充完整的SQL语句 mandText = updateSql; // 指定要执行的SQL语句int result = command.ExecuteNonQuery(); // 执行命令}}}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}}ChatForm.cs代码using System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;namespace MyQQ{///<summary>///聊天窗体///</summary>public partial class ChatForm : Form{public int friendId; // 当前聊天的好友号码public string nickName; // 当前聊天的好友昵称public int faceId; // 当前聊天的好友头像Idpublic ChatForm(){InitializeComponent();}// 窗体加载时的动作private void ChatForm_Load(object sender, EventArgs e){// 设置窗体标题this.Text = string.Format("与{0}聊天中",nickName);// 设置窗体顶部显示的好友信息picFace.Image = ilFaces.Images[faceId];lblFriend.Text = string.Format("{0}({1})",nickName,friendId);// 读取所有的未读消息，显示在窗体中ShowMessage();}// 关闭窗体private void btnClose_Click(object sender, EventArgs e){this.Close();}// 发送消息private void btnSend_Click(object sender, EventArgs e){if (txtChat.Text.Trim() == "") // 不能发送空消息{MessageBox.Show("不能发送空消息！", "提示", MessageBoxButtons.OK, rmation);return;}else if (txtChat.Text.Trim().Length > 50){MessageBox.Show("消息内容过长，请分为几条发送！", "提示", MessageBoxButtons.OK, rmation);return;}else// 发送消息，写入数据库{// MessageTypeId:1-表示聊天消息，为简化操作没有读取数据表，到S2可以用常量或者枚举实现// MessageState:0-表示消息状态是未读int result = -1; // 表示操作数据库的结果string sql = string.Format("INSERT INTO Messages (FromUserId, ToUserId, Message, MessageTypeId, MessageState) VALUES ({0},{1},'{2}',{3},{4})",UserHelper.loginId, friendId, txtChat.Text.Trim(), 1, 0);try{// 执行命令SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();result = command.ExecuteNonQuery();}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}if (result != 1){MessageBox.Show("服务器出现意外错误！", "抱歉", MessageBoxButtons.OK, MessageBoxIcon.Error);}txtChat.Text = ""; // 输入消息清空this.Close();}}///<summary>///读取所有的未读消息，显示在窗体中///</summary>private void ShowMessage(){string messageIdsString = ""; // 消息的Id组成的字符串string message; // 消息内容string messageTime; // 消息发出的时间// 读取消息的SQL语句string sql = string.Format("SELECT Id, Message,MessageTime From Messages WHERE FromUserId={0} AND ToUserId={1} AND MessageTypeId=1 AND MessageState=0",friendId,UserHelper.loginId);try{SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();SqlDataReader reader = command.ExecuteReader();// 循环将消息添加到窗体上while (reader.Read()){messageIdsString += Convert.ToString(reader["Id"]) + "_";message = Convert.ToString(reader["Message"]);messageTime = Convert.ToDateTime(reader["MessageTime"]).ToString(); // 转换为日期类型，告诉学员lblMessages.Text += string.Format("\n{0} {1}\n{2}",nickName,messageTime,message);}reader.Close();}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}// 把显示出的消息置为已读if (messageIdsString.Length > 1){messageIdsString.Remove(messageIdsString.Length - 1);SetMessageRead(messageIdsString, '_');}}///<summary>///把显示出的消息置为已读///</summary>private void SetMessageRead(string messageIdsString, char separator){string[] messageIds = messageIdsString.Split(separator); // 分割出每个消息Idstring sql = "Update Messages SET MessageState=1 WHERE Id="; // 更新状态的SQL语句的固定部分string updateSql; // 执行的SQL语句try{SqlCommand command = new SqlCommand(); // 创建Command对象command.Connection = DBHelper.connection; // 指定数据库连接DBHelper.connection.Open(); // 打开数据库连接foreach (string id in messageIds){if (id != ""){updateSql = sql + id; // 补充完整的SQL语句 mandText = updateSql; // 指定要执行的SQL语句int result = command.ExecuteNonQuery(); // 执行命令}}}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}}private void lblMessages_Click(object sender, EventArgs e){}}}DBHelper.cs类代码using System;using System.Collections.Generic;using System.Text;using System.Data.SqlClient;namespace MyQQ{// 数据库帮助类，维护数据库连接字符串和数据库连接对象class DBHelper{private static string connString = "Data Source=.;database=MyQQ;integrated security=sspi";public static SqlConnection connection = new SqlConnection(connString);}}using System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace MyQQ{///<summary>///头像选择窗体///</summary>public partial class FacesForm : Form{public PersonalInfoForm personalInfoForm; // 个人信息窗体public FacesForm(){InitializeComponent();}1.FacesForm.cs代码private void FacesForm_Load(object sender, EventArgs e){for (int i = 0; i < ilFaces.Images.Count; i++){lvFaces.Items.Add(i.ToString());lvFaces.Items[i].ImageIndex = i;}}// 确定选择头像private void btnOK_Click(object sender, EventArgs e){if (lvFaces.SelectedItems.Count == 0){MessageBox.Show("请选择一个头像！", "提示", MessageBoxButtons.OK, rmation);}else{int faceId = lvFaces.SelectedItems[0].ImageIndex; // 获得当前选中的头像的索引personalInfoForm.ShowFace(faceId); // 设置个人信息窗体中显示的头像this.Close();}}// 双击时选择头像private void lvIcons_MouseDoubleClick(object sender, MouseEventArgs e){int faceId = lvFaces.SelectedItems[0].ImageIndex; // 获得当前选中的头像的索引 personalInfoForm.ShowFace(faceId); // 设置个人信息窗体中显示的头像this.Close();}// 关闭窗体private void btnCancel_Click(object sender, EventArgs e){this.Close();}}}LoginForm.csusing System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;namespace MyQQ{///<summary>///登录窗体///</summary>public partial class LoginForm : Form{public LoginForm(){InitializeComponent();}// 取消按钮的事件处理private void btnCancel_Click(object sender, EventArgs e){Application.Exit();}// 打开申请号码界面private void llbl_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) {RegisterForm registerForm = new RegisterForm();registerForm.Show();}// 登录按钮事件处理private void btnLogin_Click(object sender, EventArgs e){bool error = false; // 标志在执行数据库操作的过程中是否出错// 如果输入验证成功，就验证身份，并转到相应的窗体if (ValidateInput()){int num = 0; // 数据库操作结果try{// 查询用的sql语句string sql = string.Format("SELECT COUNT(*) FROM Users WHERE Id={0} AND LoginPwd = '{1}'",int.Parse(txtLoginId.Text.Trim()), txtLoginPwd.Text.Trim());// 创建Command 对象SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open(); // 打开数据库连接num = Convert.ToInt32(command.ExecuteScalar());}catch (Exception ex){error = true;Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close(); // 关闭数据库连接}if (!error && (num == 1)) // 验证通过{// 设置登录的用户号码UserHelper.loginId = int.Parse(txtLoginId.Text.Trim());// 创建主窗体MainForm mainForm = new MainForm();mainForm.Show(); // 显示窗体this.Visible = false; // 当前窗体不可见}else{MessageBox.Show("输入的用户名或密码有误！", "登录提示", MessageBoxButtons.OK, MessageBoxIcon.Error);}}}// 忘记密码标签private void llblFogetPwd_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) {MessageBox.Show("该功能尚未开通！","提示",MessageBoxButtons.OK,rmation);}// 用户输入验证private bool ValidateInput(){// 验证用户输入if (txtLoginId.Text.Trim() == ""){MessageBox.Show("请输入登录的号码", "登录提示", MessageBoxButtons.OK, rmation);txtLoginId.Focus();return false;}else if (txtLoginPwd.Text.Trim() == ""){MessageBox.Show("请输入密码", "登录提示", MessageBoxButtons.OK, rmation);txtLoginPwd.Focus();return false;}return true;}}}MainForm.csusing System;using System.Collections.Generic;using ponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using Aptech.UI;using System.Data.SqlClient;using System.Media;namespace MyQQ{///<summary>///登录后的主窗体///</summary>public partial class MainForm : Form{int fromUserId; // 消息的发起者int friendFaceId; // 发消息的好友的头像Idint messageImageIndex = 0; // 工具栏中的消息图标的索引public MainForm(){InitializeComponent();}// 窗体加载时发生private void MainForm_Load(object sender, EventArgs e) {// 工具栏的消息图标tsbtnMessageReading.Image = ilMessage.Images[0];// 显示个人的信息ShowSelfInfo();// 添加SideBar 的两个组sbFriends.AddGroup("我的好友");sbFriends.AddGroup("陌生人");// 向我的好友组中添加我的好友列表ShowFriendList();}// 窗体关闭后，退出应用程序private void MainForm_FormClosed(object sender, FormClosedEventArgs e) {Application.Exit();}// 显示个人信息窗体private void tsbtnPersonalInfo_Click(object sender, EventArgs e){PersonalInfoForm personalInfoForm = new PersonalInfoForm();personalInfoForm.mainForm = this; // 将当前窗体本身传给个人信息窗体 personalInfoForm.Show();}// 显示查找好友窗体private void tsbtnSearchFriend_Click(object sender, EventArgs e){SearchFriendForm searchFriendForm = new SearchFriendForm();searchFriendForm.Show();}// 双击一项，弹出聊天窗体private void sbFriends_ItemDoubleClick(SbItemEventArgs e){// 消息timer停止运行if (tmrChatRequest.Enabled == true){tmrChatRequest.Stop();e.Item.ImageIndex = this.friendFaceId;}// 显示聊天窗体ChatForm chatForm = new ChatForm();chatForm.friendId = Convert.ToInt32(e.Item.Tag); // 号码chatForm.nickName = e.Item.Text; // 昵称chatForm.faceId = e.Item.ImageIndex; // 头像chatForm.Show();}// 点击刷新好友列表private void tsbtnUpdateFriendList_Click(object sender, EventArgs e){ShowFriendList();}// 定时扫描数据库，找到未读消息private void tmrMessage_Tick(object sender, EventArgs e){ShowFriendList(); // 刷新好友列表int messageTypeId = 1; // 消息类型int messageState = 1; // 消息状态// 找出未读消息对应的好友Idstring sql = string.Format("SELECT Top 1 FromUserId, MessageTypeId, MessageState FROM Messages WHERE ToUserId={0} AND MessageState=0", UserHelper.loginId);SqlCommand command;// 消息有两种类型：聊天消息、添加好友消息try{command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();SqlDataReader dataReader = command.ExecuteReader();// 循环读出一个未读消息if (dataReader.Read()){this.fromUserId = (int)dataReader["FromUserId"];messageTypeId = (int)dataReader["MessageTypeId"];messageState = (int)dataReader["MessageState"];}dataReader.Close();}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}// 判断消息类型，如果是添加好友消息，就启动喇叭timer，让小喇叭闪烁if (messageTypeId == 2 && messageState == 0){SoundPlayer player = new SoundPlayer("system.wav");player.Play();tmrAddFriend.Start();}// 如果是聊天消息，就启动聊天timer，让好友头像闪烁else if (messageTypeId == 1 && messageState == 0){// 获得发消息的人的头像Idsql = "SELECT FaceId FROM Users WHERE Id=" + this.fromUserId;try{command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();this.friendFaceId = Convert.ToInt32(command.ExecuteScalar()); // 设置发消息的好友的头像索引}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}// 如果发消息的人没有在列表中就添加到陌生人列表中if (!HasShowUser(fromUserId)){UpdateStranger(fromUserId);}SoundPlayer player = new SoundPlayer("msg.wav");player.Play();tmrChatRequest.Start(); // 启动闪烁头像定时器}}// 控制喇叭闪烁private void tmrAddFriend_Tick(object sender, EventArgs e){// 反复修改它的图像messageImageIndex = messageImageIndex == 0 ? 1:0;tsbtnMessageReading.Image = ilMessage.Images[messageImageIndex];}// 单击时显示请求好友消息窗体private void tsbtnMessageReading_Click(object sender, EventArgs e){tmrAddFriend.Stop(); // 消息timer停止运行// 图片恢复正常messageImageIndex = 0;tsbtnMessageReading.Image = ilMessage.Images[messageImageIndex];// 显示系统消息窗体RequestForm requestForm = new RequestForm();requestForm.Show();}// 让相应的好友头像闪烁private void tmrChatRequest_Tick(object sender, EventArgs e){// 循环好友列表两个组中的每个item，找到发消息的好友，让他的头像闪烁for (int i = 0; i < 2; i++){for (int j = 0; j < sbFriends.Groups[i].Items.Count; j++){if(Convert.ToInt32(sbFriends.Groups[i].Items[j].Tag) == this.fromUserId) {if (sbFriends.Groups[i].Items[j].ImageIndex < 100){sbFriends.Groups[i].Items[j].ImageIndex = 100;// 索引为的图片是一个空白图片}else{sbFriends.Groups[i].Items[j].ImageIndex = this.friendFaceId;}sbFriends.Invalidate(); // 重新绘制，只要告诉学生需要这句话才能正常闪烁头像就行}}}}// 显示右键菜单时，控制哪些菜单不可见private void cmsFriendList_Opening(object sender, CancelEventArgs e){// 如果没有选中的项if (sbFriends.SeletedItem == null){tsmiDelete.Visible = false;}else{tsmiDelete.Visible = true;}// 如果选中的是陌生人，显示加为好友菜单if (sbFriends.SeletedItem != null && sbFriends.SeletedItem.Parent == sbFriends.Groups[1]){tsmiAddFriend.Visible = true;}else{tsmiAddFriend.Visible = false;}}// 显示大、小头像视图切换private void tsmiView_Click(object sender, EventArgs e){if (sbFriends.View == rgeIcon){sbFriends.View = SbView.SmallIcon;tsmiView.Text = "显示大头像";}else if (sbFriends.View == SbView.SmallIcon){sbFriends.View = rgeIcon;tsmiView.Text = "显示小头像";}}// 删除好友private void tsmiDelete_Click(object sender, EventArgs e){DialogResult result; // 对话框结果int deleteResult = 0; // 操作结果if (sbFriends.SeletedItem != null){result = MessageBox.Show("确实要删除该好友吗？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);if (result == DialogResult.Yes) // 确认删除{if (sbFriends.VisibleGroup == sbFriends.Groups[0]){string sql = string.Format("DELETE FROM Friends WHERE HostId={0} AND FriendId={1}",UserHelper.loginId, Convert.ToInt32(sbFriends.SeletedItem.Tag));try{SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();deleteResult = command.ExecuteNonQuery();}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}if (deleteResult == 1){MessageBox.Show("好友已删除", "提示", MessageBoxButtons.OK, rmation);sbFriends.SeletedItem.Parent.Items.Remove(sbFriends.SeletedItem);}}else{MessageBox.Show("好友已删除", "提示", MessageBoxButtons.OK, rmation);sbFriends.SeletedItem.Parent.Items.Remove(sbFriends.SeletedItem);}}}}// 将选中的人加为好友private void tsmiAddFriend_Click(object sender, EventArgs e){int result = 0; // 操作结果string sql = string.Format("INSERT INTO Friends (HostId, FriendId) VALUES({0},{1})",UserHelper.loginId, Convert.ToInt32(sbFriends.SeletedItem.Tag));try{SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();result = command.ExecuteNonQuery();}catch (Exception ex){Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}if (result == 1){MessageBox.Show("添加成功！", "提示", MessageBoxButtons.OK, rmation);sbFriends.SeletedItem.Parent.Items.Remove(sbFriends.SeletedItem);ShowFriendList(); // 更新好友列表}else{MessageBox.Show("添加失败，请稍候再试！", "提示", MessageBoxButtons.OK, rmation);}}// 退出private void tsbtnExit_Click(object sender, EventArgs e){DialogResult result = MessageBox.Show("确实要退出吗？", "操作确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question);if (result == DialogResult.Yes){Application.Exit();}}// 可见组发生变化时，发出声音private void sbFriends_VisibleGroupChanged(SbGroupEventArgs e){SoundPlayer player = new SoundPlayer("folder.wav");player.Play();}///<summary>///登录后显示个人的信息///</summary>public void ShowSelfInfo(){string nickName = ""; // 昵称int faceId = 0; // 头像索引bool error = false; // 标识是否出现错误// 取得当前用户的昵称、头像string sql = string.Format("SELECT NickName, FaceId FROM Users WHERE Id={0}",UserHelper.loginId);try{// 查询SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();SqlDataReader dataReader = command.ExecuteReader();if (dataReader.Read()){if (!(dataReader["NickName"] is DBNull)) // 判断数据库类型是否为空 {nickName = Convert.ToString(dataReader["NickName"]);}faceId = Convert.ToInt32(dataReader["FaceId"]);}dataReader.Close();}catch (Exception ex){error = true;Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}// 根据操作数据库结果进行不同的操作if (error){MessageBox.Show("服务器请求失败！请重新登录！", "意外错误", MessageBoxButtons.OK, MessageBoxIcon.Error);Application.Exit();}else{// 在窗体标题显示登录的昵称、号码this.Text = UserHelper.loginId.ToString();this.picFace.Image = ilFaces.Images[faceId];this.lblLoginId.Text = string.Format("{0}({1})", nickName,UserHelper.loginId.ToString());}}///<summary>///向我的好友组中添加我的好友列表///</summary>private void ShowFriendList(){// 清空原来的列表sbFriends.Groups[0].Items.Clear();bool error = false; // 标识数据库是否出错// 查找有哪些好友string sql = string.Format("SELECT FriendId,NickName,FaceId FROM Users,Friends WHERE Friends.HostId={0} AND Users.Id=Friends.FriendId",UserHelper.loginId);try{// 执行查询SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();SqlDataReader dataReader = command.ExecuteReader();// 循环添加好友列表while (dataReader.Read()){// 创建一个SideBar项SbItem item = new SbItem((string)dataReader["NickName"], (int)dataReader["FaceId"]);item.Tag = (int)dataReader["FriendId"]; // 将号码放在Tag属性中// SideBar中的组可以通过数组的方式访问，按照添加的顺序索引从开始// Groups[0]表示SideBar中的第一个组，也就是“我的好友”组sbFriends.Groups[0].Items.Add(item); // 向SideBar的“我的好友”组中添加项 }dataReader.Close();}catch (Exception ex){error = true;Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}// 出错了if (error){MessageBox.Show("服务器发生意外错误！请尝试重新登录", "抱歉", MessageBoxButtons.OK, MessageBoxIcon.Error);Application.Exit();}}///<summary>///判断发消息的人是否在列表中///</summary>private bool HasShowUser(int loginId){bool find = false; // 表示是否在当前显示出的用户列表中找到了该用户// 循环SideBar 中的个组，寻找发消息的人是否在列表中for (int i = 0; i < 2; i++){for (int j = 0; j < sbFriends.Groups[i].Items.Count; j++){if (Convert.ToInt32(sbFriends.Groups[i].Items[j].Tag) == loginId){find = true;}}}return find;}///<summary>///更新陌生人列表///</summary>private void UpdateStranger(int loginId){// 选出这个人的基本信息string sql = "SELECT NickName, FaceId FROM Users WHERE Id=" + loginId;bool error = false; // 用来标识是否出现错误try{SqlCommand command = new SqlCommand(sql, DBHelper.connection);DBHelper.connection.Open();SqlDataReader dataReader = command.ExecuteReader(); // 查询if (dataReader.Read()){SbItem item = new SbItem((string)dataReader["NickName"],(int)dataReader["FaceId"]);item.Tag = this.fromUserId; // 将Id记录在Tag属性中sbFriends.Groups[1].Items.Add(item); // 向陌生人组中添加项}sbFriends.VisibleGroup = sbFriends.Groups[1]; // 设定陌生人组为可见组 }catch (Exception ex){error = true;Console.WriteLine(ex.Message);}finally{DBHelper.connection.Close();}// 出错了if (error){MessageBox.Show("服务器出现意外错误！", "抱歉", MessageBoxButtons.OK, MessageBoxIcon.Error);}}}}（资料素材和资料部分来自网络，供参考。