简单网页聊天室
最近在做一个java网络开发的一个小练习，简易网页聊天室：
1）是用oracle做数据库的，存有两张表
a. chatuser表，保存登陆用户的
SQL> desc chatuser
Name Type Nullable Default Comments
---------- ------------ -------- ------- --------
USERNAME VARCHAR2(25)
LOGINTIME TIMESTAMP(6) Y
LOGOFFTIME TIMESTAMP(6) Y
LOGINSTATE NUMBER(5) Y
b.UserChatContent表，保存聊天记录的
SQL> desc UserChatContent
Name Type Nullable Default Comments
----------- -------------- -------- ------- --------
USERNAME VARCHAR2(25)
CHATCONTENT VARCHAR2(1000) Y
SPEAKTIME TIMESTAMP(6) Y
jdbc工具包用了董工封装的dataSource
2）java类：
a.entity：（5个）
po类：ChatUser,UserChatContent (对应数据库两张表)
vo类：ChatUserVo,UserChatContentVo (继承po类)
其他：UserName （用来查询数据库表时，只查用户名用的）
b.logic：（2个）
Checkpolice (用来定时检查在线用户是否超时没操作的实现runnable借口的线程类)
DaoChat (处理与数据库的一系列操作，如：查询在线用户，登录，退出，查聊天记录等)
3）jsp页面：（5 个,我是放在意个chat3的文件夹里）
a. login.jsp 登录页面，也处理重复登录，退出事务
b. index.jsp 主页面，用frame框架，嵌套了聊天记录，在线用户，发言三大窗口
c. content.jsp 显示当天聊天记录
d. users.jsp 显示在线用户
e. sayWordBox.jsp 发言窗口，退出按钮...
主要代码：
java类：
entity类 5个
-----------------ChatUser 类----------------------
package com.entity.po;
import java.sql.Timestamp;
public class ChatUser {
private String userName;
private Timestamp loginTime;
private Timestamp logoffTime;
private Integer loginState;//1为登录，0为未登录
public ChatUser() {
super();
}
public ChatUser(String userName) {
super();
this.userName = userName;
}
public ChatUser(String userName, Timestamp loginTime) {
super();
this.userName = userName;
this.loginTime = loginTime;
}
public ChatUser(String userName, Timestamp loginTime, Timestamp logoffTime,
Integer loginState) {
super();
this.userName = userName;
this.loginTime = loginTime;
this.logoffTime = logoffTime;
this.loginState = loginState;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public Timestamp getLoginTime() {
return loginTime;
}
public void setLoginTime(Timestamp loginTime) {
this.loginTime = loginTime;
}
public Timestamp getLogoffTime() {
return logoffTime;
}
public void setLogoffTime(Timestamp logoffTime) {
this.logoffTime = logoffTime;
}
public Integer getLoginState() {
return loginState;
}
public void setLoginState(Integer loginState) {
this.loginState = loginState;
}
}
------------------------end-------------------------
-----------------UserChatContent 类----------------------
package com.entity.po;
import java.sql.Timestamp;
public class UserChatContent {
private String userName;
private String chatContent;
private Timestamp speakTime;
public UserChatContent() {
super();
}
public UserChatContent(String userName, String chatContent) {
super();
this.userName = userName;
this.chatContent = chatContent;
this.speakTime = new Timestamp( System.currentTimeMillis() );
}
public UserChatContent(String userName, String chatContent, Timestamp speakTime) {
super();
this.userName = userName;
this.chatContent = chatContent;
this.speakTime = speakTime;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getChatContent() {
return chatContent;
}
public void setChatContent(String chatContent) {
this.chatContent = chatContent;
}
public Timestamp getSpeakTime() {
return speakTime;
}
public void setSpeakTime(Timestamp speakTime) {
this.speakTime = speakTime;
}
}
------------------------end-------------------------
-----------------ChatUserVo 类----------------------
package com.entity.vo;
import java.sql.Timestamp;
import com.entity.po.ChatUser;
public class ChatUserVo extends ChatUser{
public ChatUserVo() {
super();
// TODO Auto-generated constructor stub
}
public ChatUserVo(String userName, Timestamp loginTime,
Timestamp logoffTime, Integer loginState) {
super(userName, loginTime, logoffTime, loginState);
// TODO Auto-generated constructor stub
}
public ChatUserVo(String userName, Timestamp loginTime) {
super(userName, loginTime);
// TODO Auto-generated constructor stub
}
public ChatUserVo(String userName) {
super(userName);
// TODO Auto-generated constructor stub
}
}
------------------------end-------------------------
-----------------UserChatContentVo 类----------------------
package com.entity.vo;
import java.sql.Timestamp;
import com.entity.po.UserChatContent;
public class UserChatContentVo extends UserChatContent{
public UserChatContentVo() {
super();
// TODO Auto-generated constructor stub
}
public UserChatContentVo(String userName, String chatContent, Timestamp speakTime) {
super(userName, chatContent, speakTime);
// TODO Auto-generated constructor stub
}
public UserChatContentVo(String userName, String chatContent) {
super(userName, chatContent);
// TODO Auto-generated constructor stub
}
}
------------------------end-------------------------
-----------------UserChatContent 类----------------------
package com.entity;
public class UserName {
private String userName;
public UserName() {
super();
}
public UserName(String userName) {
super();
this.userName = userName;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
}
------------------------end-------------------------
logic类 2个
-----------------DaoChat 类----------------------
package com.logic;
import java.sql.Timestamp;
import java.util.List;
import com.entity.UserName;
import com.entity.po.ChatUser;
import com.entity.po.UserChatContent;
import com.entity.vo.ChatUserVo;
import com.entity.vo.UserChatContentVo;
import com.sql.RemoteExecute;
public class DaoChat {
@SuppressWarnings("unchecked")
public boolean islogin(String userName){
if( userName == null || "".equals(userName)){
System.out.println("你传的参数不符合条件...");
return false;
}
RemoteExecute remoteExecute = new RemoteExecute();
String sql = "select userName from ChatUser where userName = '" + userName + "' and loginState = 1";
List
closeRe(remoteExecute);
if( list != null && list.size() != 0){
return true;
}
return false;
}
@SuppressWarnings("unchecked")
private boolean islogin(String userName,RemoteExecute remoteExecute){
if( userName == null || "".equals(userName)){
System.out.println("你传的参数不符合条件...");
return false;
}
String sql = "select userName from ChatUser where userName = '" + userName + "' and loginState = 1";
List
if( list != null && list.size() != 0){
return true;
}
return false;
}
@SuppressWarnings({ "unchecked", "deprecation" })
public boolean login(String userName){
if( userName == null || "".equals(userName)){
System.out.println("你传的参数不符合条件...");
return false;
}
RemoteExecute remoteExecute = new RemoteExecute();
String sql = "select * from ChatUser where userName = '" + userName + "'";//检查用户名是否已经登录过...如果登录过，则判断是否在线
List
if( list != null && list.size() != 0){//已经登录过...
if( list.get(0).getLoginState() == 1 ){//在线
//System.out.println("用户列的登陆情况：" + list.get(0).getLoginState());
closeRe(remoteExecute);
return false;
}else{//没在线
Timestamp timestamp = new Timestamp( System.currentTimeMillis() );
//(timestamp '2011-9-10 14:01:00')
sql = "update ChatUser set loginState = 1, loginTime = (timestamp '" + timestamp.toLocaleString() + "') where userName = '" + userName + "'";
remoteExecute.excute(sql, null);
closeRe(remoteExecute);
return true;
}//else
}else{//没登录过的，进行登录，并注册
ChatUserVo user = new ChatUserVo();
user.setUserName(userName);
user.setLoginTime(new Timestamp( System.currentTimeMillis() ));
user.setLoginState(1);
remoteExecute.save(user, ChatUser.class, "userName");
closeRe(remoteExecute);
return true;
}//else
}//login
private void closeRe(RemoteExecute remoteExecute) {
if( remoteExecute == null )return;
remoteExecute.commit();
remoteExecute.close();
remoteExecute = null;
}
public void checkLoginUsers() {
CheckPolice checkPolice = new CheckPolice();
Thread cheThread = new Thread(checkPolice,"checkPolice");
cheThread.start();
}
@SuppressWarnings("deprecation")
public boolean logoff(String userName){
if( userName == null || "".equals(userName)){
System.out.println("你传的参数不符合条件...");
return false;
}
RemoteExecute remoteExecute = new RemoteExecute();
Timestamp timestamp = new Timestamp( System.currentTimeMillis() );
String sql = "update ChatUser set loginState = 0, logoffTime = (timestamp '" + timestamp.toLocaleString() + "') where userName = '" + userName + "'";
int i = remoteExecute.excuteUpdate(sql, null);
closeRe(remoteExecute);
if( i >= 1 )
return true;
return false;
}
public boolean speak(String userName,String speakContent){
if( userName == null || "".equals(userName)){
System.out.println("你传的参数不符合条件...");
return false;
}
RemoteExecute remoteExecute = new RemoteExecute();
if( !this.islogin(userName, remoteExecute) ){
return false;
}
UserChatContentVo userChatContentVo = new UserChatContentVo();
userChatContentVo.setUserName(userName);
userChatContentVo.setSpeakTime(new Timestamp( System.currentTimeMillis() ));