java课程设计实验报告

《Java语言程序设计》综合实验报告系别: 计算机科学与技术系学科专业: 信息管理与信息系统课题题目：qq聊天系统人员及分工：白娟()张丹()张富利()指导老师：卢照2014年6月13日目录一、课程设计目的.......................................... 错误！未定义书签。

二、课程内容.................................................. 错误！未定义书签。

三、实现代码（部分重要代码，不需要全粘）错误！未定义书签。

1.服务器： .................................................... 错误！未定义书签。

2.客户端： .................................................... 错误！未定义书签。

3.功能实现： ................................................ 错误！未定义书签。

4.图形化界面的转换： ................................ 错误！未定义书签。

5.连接数据库代码： ................................... 错误！未定义书签。

四、运行结果（有必要的截图）.................. 错误！未定义书签。

1. 服务器启动： ........................................ 错误！未定义书签。

2. 客户端启动： ........................................ 错误！未定义书签。

3. 登入界面： ............................................ 错误！未定义书签。

4. 好友列表： ............................................ 错误！未定义书签。

5. 聊天界面： ............................................ 错误！未定义书签。

6. 数据库信息： ........................................ 错误！未定义书签。

五、课程总结.................................................. 错误！未定义书签。

六、小组分工.................................................. 错误！未定义书签。

一、课程设计目的运用本学期java课程所学知识制作一个小型的比较完整的小系统，旨在使学生对所学知识有一个整体的运用，了解java功能的强大，对学习java产生兴趣。

二、课程内容基本页面：登入页面，注册页面，好友列表页面，聊天页面，查询好友界面基本功能：注册信息，添加好友，查找好友，聊天三、实现代码（部分重要代码，不需要全粘）1.服务器代码：package com.sram.server;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.OutputStream;import java.io.PrintStream;import .ServerSocket;import .Socket;import java.util.HashMap;import java.util.List;import java.util.Map;import er;import erDao;public class Server {public static Map socketMap = new HashMap();public static void main(String[] args) {try {ServerSocket ss = new ServerSocket(20001);System.out.println("服务器已启动,准备接收数据");while(true){Socket soc = ss.accept();ServerSocketThread sst = new ServerSocketThread(soc);Thread thr = new Thread(sst);thr.start();}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}class ServerSocketThread implements Runnable{private Socket soc;public ServerSocketThread(Socket soc){this.soc = soc;}public void run() {System.out.println("接受到数据");UserDao ud = new UserDao();try {BufferedReader br = new BufferedReader(new InputStreamReader(soc.getInputStream()));String str = "";while((str = br.readLine())!= null){String[] strs = str.split(",");//1代表if(strs[0].equals("1")){String qq = strs[1];String pass = strs[2];User u = ud.findUser(qq, pass);OutputStream os = soc.getOutputStream();PrintStream ps = new PrintStream(os);if(u!=null){System.out.println("登陆成功");Server.socketMap.put(u.getQqNum(),soc);ps.println("1,yes,"+u.getNickName());ps.flush();List<User> li = ud.FriendList(u);li.add(u);ObjectOutputStream oos = new ObjectOutputStream(soc.getOutputStream());oos.writeObject(li);oos.flush();1 1}else{System.out.println("登陆失败");ps.println("1,no");}}if(strs[0].equals("2")){ObjectInputStream ois = new ObjectInputStream(soc.getInputStream());try {User u = (User) ois.readObject();String qqnum = ud.insertUser(u);OutputStream os = soc.getOutputStream();PrintStream ps = new PrintStream(os);ps.println("2,ok,"+qqnum);} catch (ClassNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}}if(strs[0].equals("3")){String friendNum = strs[1];String userNum = strs[2];String message = strs[3];System.out.println("好友号码:"+friendNum+",用户号码:"+userNum+",信息:"+message);Socket friendSoc = (Socket) Server.socketMap.get(friendNum);PrintStream ps = new PrintStream(friendSoc.getOutputStream());ps.println(str);ps.flush();}if(strs[0].equals("4")){String qqnum = strs[1];User nu = ud.findUserfromQQ(qqnum);OutputStream os = soc.getOutputStream();PrintStream ps = new PrintStream(os);if(nu!=null){ps.println("4,ok");ps.flush();ObjectOutputStream oos = new ObjectOutputStream(soc.getOutputStream());oos.writeObject(nu);oos.flush();}else{ps.println("4,no");ps.flush();}}if(strs[0].equals("5")){String qqnum = strs[1];ObjectInputStream ois = new ObjectInputStream(soc.getInputStream());User u = (User) ois.readObject();User nu = ud.findUserfromQQ(qqnum);ud.addFriend(u.getId(), nu.getId());OutputStream os = soc.getOutputStream();PrintStream ps = new PrintStream(os);ps.println("5,ok,"+u.getQqNum()+","+u.getPass());ps.flush();}}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (ClassNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}2.客户端：package com.sram.client;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;1 3import .Socket;import java.util.List;import er;import com.sram.util.MessageIO;import com.sram.view.ChatUI;import com.sram.view.FriendListUI;import com.sram.view.LoginUI;import com.sram.view.RegisterSuccessUI;import com.sram.view.SearchFriendUI;import com.sram.view.UIList;public class Client {public static Socket soc;public static void main(String[] args) {LoginUI lu = new LoginUI();UIList.UIlist.put("login", lu);ClientThread ct = new ClientThread();new Thread(ct).start();}}class ClientThread implements Runnable{public void run(){try {BufferedReader br = new BufferedReader(new InputStreamReader(Client.soc.getInputStream()));String str = "";while((str = br.readLine())!=null){String[] strs = str.split(",");if(strs[0].equals("1")){if(strs[1].equals("yes")){List<User> li = (List<User>) MessageIO.getObject();FriendListUI fui = new FriendListUI(li);UIList.UIlist.put("friend", fui);UIList.UIlist.get("login").setVisible(false);}}if(strs[0].equals("2")){if(strs[1].equals("ok")){UIList.UIlist.get("register").setVisible(false);//UIList.UIlist.get("login").setVisible(true);new RegisterSuccessUI(strs[2]);}}if(strs[0].equals("3")){ChatUI cu = (ChatUI)UIList.UIlist.get("chatui");cu.jta1.setText(strs[3]);}if(strs[0].equals("4")){SearchFriendUI sfui = (SearchFriendUI) UIList.UIlist.get("search");if(strs[1].equals("ok")){User u = (User)MessageIO.getObject();sfui.jl2.setText(u.getNickName());}else{sfui.jl2.setText("QQ号码错误");}}1 5if(strs[0].equals("5")){if(strs[1].equals("ok")){UIList.UIlist.get("friend").setVisible(false);String qq = strs[2];String pass = strs[3];MessageIO.printlnString("1,"+qq+","+pass);}}}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}3．数据库的连接以及实现功能package com.sram.util;public class MessageIO {private static Socket soc;public MessageIO(Socket soc){this.soc = soc;}public static void printlnString(String messege){try {PrintStream ps = newPrintStream(soc.getOutputStream());ps.println(messege);ps.flush();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public static void printObject(Object obj){OutputStream os;try {os = soc.getOutputStream();ObjectOutputStream oos = new ObjectOutputStream(os);oos.writeObject(obj);oos.flush();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}package com.sram.dao;import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import java.util.ArrayList;import java.util.List;import er;import com.sram.util.GetConnection;public class UserDao {public User findUser(String name,String pass){Connection conn = null;Statement stmt = null;1 7ResultSet rs = null;try {conn = GetConnection.getConnection();stmt = conn.createStatement();rs = stmt.executeQuery("select * from t_user where qqnum='"+name+"' and password='"+pass+"'");rs.next();User u = new User();u.setId(rs.getInt("id"));u.setNickName(rs.getString("nickname"));u.setPass(rs.getString("password"));u.setQqNum(rs.getString("qqnum"));return u;} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {if(rs!=null){rs.close();}if(stmt!=null){stmt.close();}if(conn!=null){conn.close();}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}return null;}public String insertUser(User u){Connection conn = null;PreparedStatement ptmt = null;ResultSet rs = null;String qqnum = null;try {conn = GetConnection.getConnection();ptmt = conn.prepareStatement("insert into t_user (qqnum,nickname,password) values(?,?,?)");int i = findLastId();qqnum = (20000+i+1)+"";ptmt.setString(1,qqnum);ptmt.setString(2, u.getNickName());ptmt.setString(3, u.getPass());boolean b = ptmt.execute();System.out.println(b);return qqnum;} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {if(rs!=null){rs.close();}if(ptmt!=null){ptmt.close();}if(conn!=null){conn.close();}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();1 9}}return qqnum;}public int findLastId(){Connection conn = null;Statement stmt = null;ResultSet rs = null;try {conn = GetConnection.getConnection();stmt = conn.createStatement();rs = stmt.executeQuery("select id from t_user order by id desc limit 1");if(rs.next()){return rs.getInt("id");}else{return 0;}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {if(rs!=null){rs.close();}if(stmt!=null){stmt.close();}if(conn!=null){conn.close();}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}return 0;}public List<User> FriendList(User u){Connection conn = null;Statement stmt = null;ResultSet rs = null;try {conn = GetConnection.getConnection();stmt = conn.createStatement();int id = u.getId();List<User> li = new ArrayList<User>();rs = stmt.executeQuery("select id,qqnum,nickname from t_user where id in(select friendnum from t_friend where mynum = "+id+")");while(rs.next()){User nu = new User();nu.setId(rs.getInt("id"));nu.setQqNum(rs.getString("qqnum"));nu.setNickName(rs.getString("nickname"));li.add(nu);}return li;} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{1 11try {if(rs!=null){rs.close();}if(stmt!=null){stmt.close();}if(conn!=null){conn.close();}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}return null;}public User findUserfromQQ(String qqnum){Connection conn = null;Statement stmt = null;ResultSet rs = null;try {conn = GetConnection.getConnection();stmt = conn.createStatement();rs = stmt.executeQuery("select * from t_user where qqnum = "+qqnum);User nu = new User();while(rs.next()){nu.setId(rs.getInt("id"));nu.setQqNum(rs.getString("qqnum"));nu.setNickName(rs.getString("nickname"));}return nu;} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {if(rs!=null){rs.close();}if(stmt!=null){stmt.close();}if(conn!=null){conn.close();}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}return null;}public void addFriend(int myId,int friendId){Connection conn = null;PreparedStatement ptmt = null;ResultSet rs = null;String qqnum = null;try {conn = GetConnection.getConnection();ptmt = conn.prepareStatement("insert into t_friend (mynum,friendnum) values(?,?)");ptmt.setInt(1, myId);1 13ptmt.setInt(2, friendId);ptmt.execute();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {if(rs!=null){rs.close();}if(ptmt!=null){ptmt.close();}if(conn!=null){conn.close();}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}四、运行结果（有必要的截图）三、登入界面：四、好友列表页面：五、查找以及添加好友页面：六、用户注册页面：七、聊天页面：1 15八、数据库信息：五、课程总结在此次项目中，我们用到了Swing图形化用户界面，Socket通信机制以及JDBC，还有IO流，在实验过程中，我们认为Client和Server端服务程序设计比较困难，很长时间都没有调试出来，通过请教同学以及查阅资料得以解决。