【项目实战】用 Java 写了一个类QQ界面聊天小项目，可在线聊天！
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了【项目实战】用 Java 写了一个类QQ界面聊天小项目，可在线聊天！，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含26903字，纯文字阅读大概需要39分钟。
内容图文
1.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
2.模块划分
==
3.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
==
4.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id
????????????return?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JSON
????????ObjectNode?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ID
????????boolean?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id
????????????objectNode.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JSON
????????ObjectNode?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id
????private?static?String?getId(ObjectNode?jsonNodes) {
????????String?nickname?=?jsonNodes.get("nickname").asText();
????????information?information?=?informationDao.nicknameGetId(nickname);
????????//联系人的id
????????int?uid?=?information.getUid();
????????//封装JSON
????????ObjectNode?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;
????@Override
????protected?void?channelRead0(ChannelHandlerContext?channelHandlerContext,?String?s)?throws?Exception {
????}
????//客户端接收数据
????@Override
????public?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id
????private?Integer?id;
????//暂存oldPasswd
????public?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untitledsrcimageSource4.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()?{
????????????@Override
????????????public?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("uD83DuDCBF隐身");
????????box.addItem("uD83DuDCBB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("uD83DuDD0D");
????????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("uD83DuDD12uD83DuDD28uD83DuDD13");
????????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()?{
????????????@Override
????????????public?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("uD83DuDC65");
????????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()?{
????????????@Override
????????????public?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ID
????????????????????????String?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untitledsrcimageSource3.png");
????????frame.setIconImage(icon_1.getImage());
????????icon?=?new?ImageIcon("E:聊天软件untitledsrcimageSource5.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()?{
????????????@Override
????????????public?void?actionPerformed(ActionEvent?e) {
????????????????tipFrame.this.dispose();
????????????}
????????});
????}
}
==
5.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
项目推荐：
Java微服务实战296集大型视频-谷粒商城【附代码和课件】
Java开发微服务畅购商城实战【全357集大项目】-附代码和课件
最全最详细数据结构与算法视频-【附课件和源码】???????
内容总结
以上是互联网集市为您收集整理的【项目实战】用 Java 写了一个类QQ界面聊天小项目，可在线聊天！全部内容，希望文章能够帮你解决【项目实战】用 Java 写了一个类QQ界面聊天小项目，可在线聊天！所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。
来源：【匿名】