Java基于Swing和Netty仿QQ界面聊天小项目
Java后端编程
共 25524字，需浏览 52分钟
·
2021-06-14 13:15
来源：blog.csdn.net/weixin_44048140
一. 功能实现
1.修改功能（密码、昵称、个性签名）
2.添加好友、删除好友
3.单聊功能
4.判断好友是否在线
二. 模块划分
三. 使用的知识
netty
swing
集合等同步阻塞队列synchronousQueue
数据库MySQL中的CRUD
C3p0连接池
JSON字符串
四. 部分代码实现
1. nettyController.java
接收到来自客户端的消息，与dao层进行交互dao层与之数据库进行交互
修改密码
添加好友
从添加好友逻辑实现上我走了很多的弯路频繁的访问数据库，这是一件很不好的事情
package chat.Project.controller;import chat.Project.bean.information;import chat.Project.constant.EnMsgType;import chat.Project.dao.*;import chat.utils.CacheUtil;import chat.utils.JsonUtils;import com.fasterxml.jackson.databind.node.ObjectNode;import io.netty.channel.Channel;import java.util.ArrayList;import java.util.Iterator;public class NettyController {private static UserDao userDao = new UserDaoImpl();private static informationDao informationDao = new informationDaoImpl();private static friendDao friendDao = new friendDaoImpl();public static String processing(String message, Channel channel){//解析客户端发送的消息ObjectNode jsonNodes = JsonUtils.getObjectNode(message);String msgtype = jsonNodes.get("msgtype").asText();if (EnMsgType.EN_MSG_LOGIN.toString().equals(msgtype)){//登录操作return loginOperation(jsonNodes,channel);}else if (EnMsgType.EN_MSG_MODIFY_SIGNATURE.toString().equals(msgtype)){//修改签名return modifySignature(jsonNodes);}else if (EnMsgType.EN_MSG_MODIFY_NICKNAME.toString().equals(msgtype)){//修改昵称return modifyNickname(jsonNodes);}else if (EnMsgType.EN_MSG_GETINFORMATION.toString().equals(msgtype)){//获取登录信息return getInformation(jsonNodes);}else if (EnMsgType.EN_MSG_VERIFY_PASSWORD.toString().equals(msgtype)){//进行修改密码return verifyPasswd(jsonNodes);}else if (EnMsgType.EN_MSG_CHAT.toString().equals(msgtype)){//单聊模式return SingleChat(jsonNodes);}else if (EnMsgType.EN_MSG_GET_ID.toString().equals(msgtype)){//获取idreturn getId(jsonNodes);}else if (EnMsgType.EN_MSG_GET_FRIEND.toString().equals(msgtype)){//获取好友列表return getFriend(jsonNodes);}else if (EnMsgType.EN_MSG_ADD_FRIEND.toString().equals(msgtype)){//添加好友return addFriends(jsonNodes);}else if (EnMsgType.EN_MSG_DEL_FRIEND.toString().equals(msgtype)){//删除好友return delFriend(jsonNodes);}else if (EnMsgType.EN_MSG_ACTIVE_STATE.toString().equals(msgtype)){//判断好友的在线状态return friendIsActive(jsonNodes);}return "";}//判断好友在线状态private static String friendIsActive(ObjectNode jsonNodes) {int friendId = jsonNodes.get("friendId").asInt();ObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_ACK.toString());objectNode.put("srctype",EnMsgType.EN_MSG_ACTIVE_STATE.toString());//客户端保证用户独立存在且是好友Channel channel = CacheUtil.get(friendId);//判断用户是否在线if (channel == null){//用户不在线objectNode.put("code",200);}else {//用户在线objectNode.put("code",300);}return objectNode.toString();}//添加好友private static String delFriend(ObjectNode jsonNodes) {Integer friendId = jsonNodes.get("friendId").asInt();int userId = jsonNodes.get("id").asInt();String localName = jsonNodes.get("localName").asText();//封装发回客户端的JSONObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_ACK.toString());objectNode.put("srctype",EnMsgType.EN_MSG_DEL_FRIEND.toString());objectNode.put("code",200);//验证是否存在当前好友information information = informationDao.getInformation(friendId);String friendName = information.getNickname();//查询自己是否有该好友boolean exist = friendDao.isExist(friendName,userId);if (exist){//存在当前好友进行删除操作friendDao.delFriend(userId,friendName);friendDao.delFriend(friendId,localName);objectNode.put("code",300);}return objectNode.toString();}//添加好友private static String addFriends(ObjectNode jsonNodes) {Integer friendId = jsonNodes.get("friendId").asInt();int userId = jsonNodes.get("id").asInt();String localName = jsonNodes.get("localName").asText();//验证是否有IDboolean exists = userDao.verifyExistFriend(friendId);ObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_ACK.toString());objectNode.put("srctype",EnMsgType.EN_MSG_ADD_FRIEND.toString());objectNode.put("code",200);if(exists){//表示存在此idobjectNode.put("code",300);//获取好友昵称information information = informationDao.getInformation(friendId);String friendNickname = information.getNickname();//进行添加好友的操作 两个对应的信息都应该添加friendDao.addFriends(userId,localName,friendNickname);friendDao.addFriends(friendId,friendNickname,localName);}return objectNode.toString();}//获取好友列表private static String getFriend(ObjectNode jsonNodes) {int uid = jsonNodes.get("uid").asInt();//返回ArrayLis集合ArrayList<String> friends = friendDao.getFriends(uid);//封装JSONObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_ACK.toString());objectNode.put("srctype",EnMsgType.EN_MSG_GET_FRIEND.toString());//写回friend集合Iterator<String> iterator = friends.iterator();int i = 0;while (iterator.hasNext()){objectNode.put("res"+i,iterator.next());i++;}//记录好友个数objectNode.put("count",i);return objectNode.toString();}//获取idprivate static String getId(ObjectNode jsonNodes) {String nickname = jsonNodes.get("nickname").asText();information information = informationDao.nicknameGetId(nickname);//联系人的idint uid = information.getUid();//封装JSONObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_ACK.toString());objectNode.put("srctype",EnMsgType.EN_MSG_GET_ID.toString());objectNode.put("uid",uid);return objectNode.toString();}//单聊模式private static String SingleChat(ObjectNode jsonNodes) {int id = jsonNodes.get("id").asInt();//根据id在friend表获取登录用户名//封装JSON数据服务端转发数据ObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_ACK.toString());objectNode.put("srctype",EnMsgType.EN_MSG_CHAT.toString());//客户端保证用户独立存在且是好友Channel channel = CacheUtil.get(id);//判断用户是否在线if (channel == null){//用户不在线objectNode.put("code",200);}else{//用户在线objectNode.put("code",300);//消息转发channel.writeAndFlush(jsonNodes.toString());}return objectNode.toString();}//修改密码private static String verifyPasswd(ObjectNode jsonNodes) {int id = jsonNodes.get("id").asInt();String oldPasswd = jsonNodes.get("oldPasswd").asText();String newPasswd = jsonNodes.get("newPasswd").asText();boolean exits = userDao.verifyPassword(oldPasswd, id);ObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_VERIFY_PASSWORD.toString());objectNode.put("code",200);if (exits){//验证成功userDao.modifyPasswd(newPasswd,id);objectNode.put("code",300);}return objectNode.toString();}//获取信息private static String getInformation(ObjectNode jsonNodes) {int id = jsonNodes.get("id").asInt();information information = informationDao.getInformation(id);//封装JSON发回客户端ObjectNode objectNode = JsonUtils.getObjectNode();objectNode.put("msgtype",EnMsgType.EN_MSG_ACK.toString());objectNode.put("srctype",EnMsgType.EN_MSG_GETINFORMATION.toString());objectNode.put("Nickname",information.getNickname());objectNode.put("Signature",information.getSignature());return objectNode.toString();}//修改昵称private static String modifyNickname(ObjectNode jsonNodes) {int id = jsonNodes.get("id").asInt();String nickname = jsonNodes.get("nickname").asText();//进行存储informationDao.storeNickname(nickname,id);return "";}//修改签名private static String modifySignature(ObjectNode jsonNodes) {int id = jsonNodes.get("id").asInt();String signature = jsonNodes.get("signature").asText();//进行存储informationDao.storeSignature(signature,id);return "";}//登录操作private static String loginOperation(ObjectNode objectNode,Channel channel) {int id = objectNode.get("id").asInt();String passwd = objectNode.get("passwd").asText();//进行数据库查询boolean exits = userDao.getInformation(id, passwd);ObjectNode jsonNodes = JsonUtils.getObjectNode();jsonNodes.put("msgtype",EnMsgType.EN_MSG_ACK.toString());jsonNodes.put("srctype",EnMsgType.EN_MSG_LOGIN.toString());jsonNodes.put("code",300);//返回状态码if (exits){jsonNodes.put("code",200);//添加用户的在线信息CacheUtil.put(id,channel);}return jsonNodes.toString();}}
2. ClientHandler.java
客户端接受来自服务端返回的消息根据返回的状态码来判断是否操作成功
package chat.Project.netty;import chat.Frame.chat.ChatFrame;import chat.Frame.chat.linkmen;import chat.Frame.chat.login;import chat.Project.constant.EnMsgType;import chat.util.JsonUtils;import com.fasterxml.jackson.databind.node.ObjectNode;import io.netty.channel.ChannelHandlerContext;import io.netty.channel.SimpleChannelInboundHandler;import java.util.concurrent.SynchronousQueue;public class ClientHandler extends SimpleChannelInboundHandler<String> {//定义一个同步阻塞队列状态码public static SynchronousQueue<Object> queue = new SynchronousQueue<>();public static String Nickname;public String Signature;@Overrideprotected void channelRead0(ChannelHandlerContext channelHandlerContext, String s) throws Exception {}//客户端接收数据@Overridepublic void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {System.out.println(msg);//解析服务端发送的消息ObjectNode jsonNodes = JsonUtils.getObjectNode((String) msg);String msgtype = jsonNodes.get("msgtype").asText();if (EnMsgType.EN_MSG_ACK.toString().equals(msgtype)) {String srctype = jsonNodes.get("srctype").asText();if (EnMsgType.EN_MSG_LOGIN.toString().equals(srctype)) {//登录操作queue.offer(jsonNodes.get("code").asInt());}else if(EnMsgType.EN_MSG_GETINFORMATION.toString().equals(srctype)){//存取信息Nickname = jsonNodes.get("Nickname").asText();Signature = jsonNodes.get("Signature").asText();linkmen.label_1.setText(Nickname);linkmen.field.setText(Signature);}else if (EnMsgType.EN_MSG_CHAT.toString().equals(srctype)){//发送端返回消息queue.offer(jsonNodes.get("code").asInt());}else if (EnMsgType.EN_MSG_GET_ID.toString().equals(srctype)){int uid = jsonNodes.get("uid").asInt();queue.offer(uid);}else if (EnMsgType.EN_MSG_GET_FRIEND.toString().equals(srctype)){//获取登录用户的好友int count = jsonNodes.get("count").asInt();login.friend = new String[count];for ( int i = 0;i<count;i++){login.friend[i] = jsonNodes.get("res"+i).asText();System.out.println(jsonNodes.get("res"+i));}}else if (EnMsgType.EN_MSG_ADD_FRIEND.toString().equals(srctype)){//添加好友queue.offer(jsonNodes.get("code").asInt());}else if (EnMsgType.EN_MSG_DEL_FRIEND.toString().equals(srctype)){//删除好友queue.offer(jsonNodes.get("code").asInt());}else if (EnMsgType.EN_MSG_ACTIVE_STATE.toString().equals(srctype)){//好友在线状态queue.offer(jsonNodes.get("code").asInt());}}else if (EnMsgType.EN_MSG_VERIFY_PASSWORD.toString().equals(msgtype)){//修改密码int code = 0;code = jsonNodes.get("code").asInt();queue.offer(code);}else if (EnMsgType.EN_MSG_CHAT.toString().equals(msgtype)){//接收端接受消息 封装朋友昵称String message = " "+ jsonNodes.get("message").asText();//聊天显示框读取消息ChatFrame.sb.append(message+"\n");ChatFrame.displayTextPanel.setText(ChatFrame.sb.toString());}}}
3. linkmen.java
这是登录成功的界面package chat.Frame.chat;import chat.Frame.operation.alterColumn.changeNickname;import chat.Frame.operation.alterColumn.changePassword;import chat.Frame.operation.alterColumn.changeSignature;import chat.Frame.operation.friendHandle.addFriend;import chat.Frame.operation.friendHandle.delFriend;import chat.Frame.tipFrame;import chat.Project.services.sendServers;import io.netty.channel.Channel;import javax.swing.*;import javax.swing.event.ListSelectionEvent;import javax.swing.event.ListSelectionListener;import java.awt.*;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;/*** 联系人界面*/public class linkmen extends JFrame {//容器private JFrame frame;//标签private JLabel label_2, label_3, label_4, label;//昵称public static JLabel label_1;//状态框private JComboBox box, box_1, box_2;//图片private ImageIcon icon_1, icon;//文本private JTextField field_1;//个性签名public static JTextField field;//面板private JPanel panel_1, panel_3, panel;//滚动面板public JScrollPane panel_2;//列表public static JList list;//与服务端通信的通道private Channel channel;//用户的idprivate Integer id;//暂存oldPasswdpublic static JLabel label_5,label_6;//好友列表数组private String[] fd;//列表public static DefaultListModel<String> model;public linkmen(Integer id, Channel channel,String[] fd) {this.id = id;this.channel = channel;this.fd = fd;}public void init() {//初始化面板1并设置信息panel_1 = new JPanel();panel_1.setLayout(null);panel_1.setLocation(0, 0);panel_1.setBorder(BorderFactory.createTitledBorder("资料卡"));panel_1.setSize(new Dimension(295, 148));panel_1.setOpaque(false);//初始化面板3并设置信息panel_3 = new JPanel();panel_3.setLayout(null);panel_3.setBorder(BorderFactory.createTitledBorder("系统设置"));panel_3.setLocation(0, 617);panel_3.setSize(new Dimension(295, 55));panel_3.setOpaque(false);//设置头像标签label_2 = new JLabel(new ImageIcon("E:\\聊天软件\\untitled\\src\\imageSource\\4.png"));label_2.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));label_2.setBounds(15, 15, 100, 100);panel_1.add(label_2);//初始暂存标签label_5 = new JLabel();label_6 = new JLabel();//设置昵称标签label_1 = new JLabel("");label_1.setBounds(130, 10, 100, 30);label_1.setFont(new Font("宋体", Font.PLAIN, 18));panel_1.add(label_1);list = new JList<String>(model);//设置每个列表的高list.setFixedCellHeight(20);list.setSelectionBackground(new Color(0xD8FF2F));list.addListSelectionListener(new ListSelectionListener() {@Overridepublic void valueChanged(ListSelectionEvent e) {//打开一个聊天窗口if (e.getValueIsAdjusting()) {for (int i = 0; i < model.size(); i++) {if (model.get(i).equals(list.getSelectedValue())){//获取id有错误int ids = new sendServers(channel).getId((String) list.getSelectedValue());if (ids!=0) {new sendServers(channel).friendIsActive(ids);new ChatFrame(ids, channel).setVisible(true);}else{System.out.println("好友不存在");}}}}}});//初始化面板二panel_2 = new JScrollPane(list);panel_2.setBorder(BorderFactory.createTitledBorder("联系人"));panel_2.setLocation(0, 147);panel_2.setSize(new Dimension(295, 470));panel_2.getViewport().setOpaque(false);list.setOpaque(false);panel_2.setOpaque(false);//设置在线状态bBox();box = new JComboBox();box.addItem("✅在线");box.addItem("\uD83D\uDCBF隐身");box.addItem("\uD83D\uDCBB忙碌");box.addItem("❎离线");box.setBounds(200, 10, 70, 30);panel_1.add(box);//设置个性签名的标签label_4 = new JLabel("个性签名:");label_4.setFont(new Font("宋体", Font.PLAIN, 16));label_4.setForeground(Color.BLUE);label_4.setBounds(120, 50, 100, 20);panel_1.add(label_4);//设置文本field = new JTextField("");field.setBounds(120, 80, 160, 30);panel_1.add(field);label_3 = new JLabel("\uD83D\uDD0D");label_3.setForeground(Color.RED);label_3.setBounds(10, 122, 20, 20);panel_1.add(label_3);//设置搜索栏field_1 = new JTextField();field_1.setBounds(30, 120, 250, 25);panel_1.add(field_1);//对面板三进行初始化box_1 = new JComboBox();box_1.addItem("\uD83D\uDD12\uD83D\uDD28\uD83D\uDD13");box_1.addItem("修改密码");box_1.addItem("修改昵称");box_1.addItem("修改签名");box_1.setBounds(8, 20, 100, 25);panel_3.add(box_1);box_1.addItemListener(new ItemListener() {@Overridepublic void itemStateChanged(ItemEvent e) {if ("修改签名".equals(box_1.getSelectedItem())) {//执行一次if (e.getStateChange() == ItemEvent.SELECTED) {changeSignature changeSignature = new changeSignature(linkmen.this);changeSignature.setVisible(true);field.setText(changeSignature.jTextField.getText());String signature = field.getText();//存储签名的方法new sendServers(channel).modifySignature(signature, id);}}if ("修改密码".equals(box_1.getSelectedItem())) {if (e.getStateChange() == ItemEvent.SELECTED) {changePassword changePassword = new changePassword(linkmen.this);changePassword.setVisible(true);label_5.setText(changePassword.oldPassword.getText());String oldPasswd = label_5.getText();label_6.setText(new String(changePassword.newPassword.getPassword()));String newPasswd = label_6.getText();//进行验证new sendServers(channel).verifyPasswd(oldPasswd, id,newPasswd);}}if ("修改昵称".equals(box_1.getSelectedItem())) {if (e.getStateChange() == ItemEvent.SELECTED) {changeNickname changeNickname = new changeNickname(linkmen.this);changeNickname.setVisible(true);label_1.setText(changeNickname.jTextField.getText());String nickname = label_1.getText();//存储昵称new sendServers(channel).modifyNickname(nickname, id);}}}});//添加好友、删除好友box_2 = new JComboBox();box_2.addItem("\uD83D\uDC65");box_2.addItem("添加好友");box_2.addItem("删除好友");box_2.setBounds(170, 20, 100, 25);box_2.addItemListener(new ItemListener() {@Overridepublic void itemStateChanged(ItemEvent e) {if ("添加好友".equals(box_2.getSelectedItem())) {if (e.getStateChange() == ItemEvent.SELECTED) {addFriend addFriend = new addFriend(linkmen.this);addFriend.setVisible(true);//读取要搜索的IDString friendIds = addFriend.jTextField.getText();//判断是否是字符串if (judgeDigit(friendIds)){int friendId = Integer.parseInt(friendIds);//搜索数据库new sendServers(channel).addFriendOperate(friendId,id,label_1.getText());}else {new tipFrame().init("输入参数错误");}}}if ("删除好友".equals(box_2.getSelectedItem())) {if (e.getStateChange() == ItemEvent.SELECTED) {delFriend delFriend = new delFriend(linkmen.this);delFriend.setVisible(true);//对其数据库进行删除操作String friendIds = delFriend.TextField.getText();//判断是否是字符串if(judgeDigit(friendIds)){int friendId = Integer.parseInt(friendIds);//操作数据库new sendServers(channel).delFriendOperate(friendId,id,label_1.getText());}else{new tipFrame().init("输入参数错误");}}}}});panel_3.add(box_2);//设置frame信息frame = new JFrame();//设置窗体信息frame.setTitle("腾讯QQ");//给窗体设置图片icon_1 = new ImageIcon("E:\\聊天软件\\untitled\\src\\imageSource\\3.png");frame.setIconImage(icon_1.getImage());icon = new ImageIcon("E:\\聊天软件\\untitled\\src\\imageSource\\5.png");label = new JLabel(icon);//获取窗口的第二层，将label放入frame.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE));//获取frame的顶层容器,并设置为透明panel = (JPanel) frame.getContentPane();panel.setOpaque(false);frame.setLayout(null);frame.setLocation(750, 150);frame.setSize(287, 700);frame.setVisible(true);frame.setResizable(false);label.setBounds(0, 0, 287, 700);frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);frame.add(panel_1);frame.add(panel_2);frame.add(panel_3);}public void mian() {//初始化面板2并设置信息model = new DefaultListModel<>();for (int i = 0; i < fd.length; i++) {model.addElement(fd[i]);}init();//更新昵称和签名new sendServers(channel).update(id);//获取用户的昵称,和好友列表//设置签名和昵称字体初始样式和大小label_1.setFont(new Font("宋体", Font.PLAIN, 18));field.setFont(new Font("宋体", Font.PLAIN, 18));}//判断是否是数字private static boolean judgeDigit(String string){for (int i = 0; i < string.length(); i++) {if (!Character.isDigit(string.charAt(i))){return false;}}return true;}}
4.tipFrame
提示操作状态窗口package chat.Frame;import chat.Frame.chat.linkmen;import chat.Frame.operation.alterColumn.changeNickname;import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;public class tipFrame extends JDialog {private Container container;//显示错误信息public JLabel label;//确认按钮private JButton button;public tipFrame(){}public void init(String msg){container = getContentPane();label = new JLabel(msg);label.setBounds(70,0,200,70);label.setFont(new Font("微软雅黑",Font.PLAIN,20));container.add(label);button = new JButton("确认");button.setBounds(35,50,140,40);container.add(button);setBounds(780,170,220,140);setLayout(null);setVisible(true);container.setBackground(new Color(0xD8FFD5));//提示窗口前置setAlwaysOnTop(true);button.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {tipFrame.this.dispose();}});}}
五. 运行例图
1. 登录界面
注册账号和忘记密码没有添加事件现在就是个摆设
2. 联系人界面
这里面的所有功能都可以使用
3. 聊天界面
这个里面表情按钮没弄好
4. 通信的过程
5. 修改操作
6. 好友的操作
-END-
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