/** 给特定的在线用户发送消息 */
public void sendMessageToUsers(ArrayList<Long> userIdList, TextMessage message) {
if (userIdList == null) {
return;
}
int listSize = userIdList.size();
if (listSize == 0) {
return;
}
int i = 0;
for (WebSocketSession user : users) {
try {
if (user.getAttributes().get("USER_ID") != null) {
if (user.isOpen() && userIdList.contains(user.getAttributes().get("USER_ID"))) {
user.sendMessage(message);
i++;
if (listSize == i) {
break;
}
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/** 会话抛出异常 */
@Override
public void handleTransportError(WebSocketSession session, Throwable arg1) throws Exception {
// TODO Auto-generated method stub
if (session.isOpen()) {
session.close();
}
WebSocketCache.removeMemberSession(session);
}
@Override
public void handleTransportError(WebSocketSession session, Throwable exception)
throws IOException {
if (session.isOpen()) {
session.close();
}
users.remove(session);
}
@Override
public void afterConnectionEstablished(WebSocketSession session) throws Exception {
// WebSocketHandlerDecorator could close the session
if (!session.isOpen()) {
return;
}
this.stats.incrementSessionCount(session);
session = new ConcurrentWebSocketSessionDecorator(session, getSendTimeLimit(), getSendBufferSizeLimit());
this.sessions.put(session.getId(), new WebSocketSessionHolder(session));
findProtocolHandler(session).afterSessionStarted(session, this.clientInboundChannel);
}
/** 给所有在线用户发送消息 */
public void sendMessageToUsers(TextMessage message) {
for (WebSocketSession user : users) {
try {
if (user.isOpen()) {
user.sendMessage(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void sendMessage(final WebSocketSession session, final TextMessage textMessage) {
this.taskExecutor.execute(
() -> {
if (session.isOpen()) {
try {
session.sendMessage(textMessage);
} catch (IOException e) {
logger.error("sendMessage to session", e);
}
}
});
}
/** 消息传输错误处理 */
public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
if (session.isOpen()) {
session.close();
}
Iterator<Entry<Long, WebSocketSession>> it = userSocketSessionMap.entrySet().iterator();
// 移除Socket会话
while (it.hasNext()) {
Entry<Long, WebSocketSession> entry = it.next();
if (entry.getValue().getId().equals(session.getId())) {
userSocketSessionMap.remove(entry.getKey());
System.out.println("Socket会话已经移除:用户ID" + entry.getKey());
break;
}
}
}
/**
* 给某个用户发送消息
*
* @param userName
* @param message
* @throws IOException
*/
public void sendMessageToUser(Long uid, TextMessage message) throws IOException {
WebSocketSession session = userSocketSessionMap.get(uid);
if (session != null && session.isOpen()) {
session.sendMessage(message);
}
}