// 聊天的信息
public String send() {
user = (User) session.get(AuthenticationInterceptor.USER_SESSION_KEY);
Hashtable roomKey = (Hashtable) application.get("roomKey");
// 使用roomKey对应的用户所对应的roomid+"chatKey"字符创作为聊天内容list的键
String chatKey = (String) roomKey.get(user.getUsername()) + "chatKey";
Vector vChat = (Vector) application.get(chatKey);
// 获取聊天信息
String sContent = this.Content;
String sTo = this.To;
String sAction = this.Action;
// 判断聊天内容是否为空，如果不为空就将聊天信息保存到Vector对象中
if (sContent != null && sContent != "") {
String sTotal =
"<font color=blue>"
+ user.getUsername()
+ "</font> "
+ sAction
+ " 对 <font color=red>"
+ sTo
+ "</font> 说："
+ sContent
+ "<br>";
vChat.add(sTotal);
}
return "send";
}
// 刷新用户信息
public String userinfo() {
user = (User) session.get(AuthenticationInterceptor.USER_SESSION_KEY);
Hashtable roomKey = (Hashtable) application.get("roomKey");
// 使用roomKey对应的用户所对应的roomid作为用户list的键
String userKey = (String) roomKey.get(user.getUsername());
// 构建一个Hashtable对象，以存储在线用户信息
Hashtable userList = (Hashtable) application.get(userKey);
// 将当前登录用户信息添加到在线用户列表中
userList.put(user.getUsername(), user.getUsername() + "**" + user.getSex() + "***");
application.put(userKey, userList);
return "userinfo";
}
// 实现roomkey userList vChat 的初始化
public String execute() throws Exception {
user = (User) session.get(AuthenticationInterceptor.USER_SESSION_KEY);
// 将房间的roomid设到application中
Hashtable roomKey = (Hashtable) application.get("roomKey");
if (roomKey == null) {
roomKey = new Hashtable();
}
if (chatcounts != null) {
roomKey.put(user.getUsername(), chatcounts);
application.put("roomKey", roomKey);
}
// 使用roomKey对应的用户所对应的roomid作为用户list的键
String userKey = (String) roomKey.get(user.getUsername());
// 构建一个Hashtable对象，以存储在线用户信息
Hashtable userList = (Hashtable) application.get(userKey);
if (userList == null) {
userList = new Hashtable();
}
// 将当前登录用户信息添加到在线用户列表中
userList.put(user.getUsername(), user.getUsername() + "**" + user.getSex() + "***");
application.put(userKey, userList);
// 使用roomKey对应的用户所对应的roomid+"chatKey"字符创作为聊天内容list的键
String chatKey = (String) roomKey.get(user.getUsername()) + "chatKey";
Vector vChat = (Vector) application.get(chatKey);
if (vChat == null) {
vChat = new Vector();
}
// 将用户进入聊天室的消息加入聊天信息中
String sWel = "<font color=red>" + user.getUsername() + "</font> 进入了聊天室！<br>";
vChat.add(sWel);
application.put(chatKey, vChat);
return "success";
}
public String logout() {
user = (User) session.get(AuthenticationInterceptor.USER_SESSION_KEY);
Hashtable roomKey = (Hashtable) application.get("roomKey");
// 使用roomKey对应的用户所对应的roomid作为用户list的键
String userKey = (String) roomKey.get(user.getUsername());
String chatKey = userKey + "chatKey";
Hashtable userList = (Hashtable) application.get(userKey);
// 在线用户列表删除当前用户
userList.remove(user.getUsername());
// 更新用户application中的列表
application.put(userKey, userList);
// 发消息表明当前用户已经离开聊天室
Vector vChat = (Vector) application.get(chatKey);
String slogout = "<font color=red>" + user.getUsername() + "</font> 离开了聊天室！<br>";
vChat.add(slogout);
System.out.println(userList.size());
if (userList.size() == 0) {
userList.clear();
vChat.clear();
}
return "logout";
}
