package com.jcdm.framework.websocket;
|
|
import java.util.concurrent.Semaphore;
|
import javax.websocket.OnClose;
|
import javax.websocket.OnError;
|
import javax.websocket.OnMessage;
|
import javax.websocket.OnOpen;
|
import javax.websocket.Session;
|
import javax.websocket.server.ServerEndpoint;
|
import org.slf4j.Logger;
|
import org.slf4j.LoggerFactory;
|
import org.springframework.stereotype.Component;
|
|
/**
|
* websocket 消息处理
|
*
|
* @author ruoyi
|
*/
|
@Component
|
@ServerEndpoint("/websocket/message")
|
public class WebSocketServer
|
{
|
/**
|
* WebSocketServer 日志控制器
|
*/
|
private static final Logger LOGGER = LoggerFactory.getLogger(WebSocketServer.class);
|
|
/**
|
* 默认最多允许同时在线人数100
|
*/
|
public static int socketMaxOnlineCount = 100;
|
|
private static Semaphore socketSemaphore = new Semaphore(socketMaxOnlineCount);
|
|
/**
|
* 连接建立成功调用的方法
|
*/
|
@OnOpen
|
public void onOpen(Session session) throws Exception
|
{
|
boolean semaphoreFlag = false;
|
// 尝试获取信号量
|
semaphoreFlag = SemaphoreUtils.tryAcquire(socketSemaphore);
|
if (!semaphoreFlag)
|
{
|
// 未获取到信号量
|
LOGGER.error("\n 当前在线人数超过限制数- {}", socketMaxOnlineCount);
|
WebSocketUsers.sendMessageToUserByText(session, "当前在线人数超过限制数：" + socketMaxOnlineCount);
|
session.close();
|
}
|
else
|
{
|
// 添加用户
|
WebSocketUsers.put(session.getId(), session);
|
LOGGER.info("\n 建立连接 - {}", session);
|
LOGGER.info("\n 当前人数 - {}", WebSocketUsers.getUsers().size());
|
WebSocketUsers.sendMessageToUserByText(session, "连接成功");
|
}
|
}
|
|
/**
|
* 连接关闭时处理
|
*/
|
@OnClose
|
public void onClose(Session session)
|
{
|
LOGGER.info("\n 关闭连接 - {}", session);
|
// 移除用户
|
WebSocketUsers.remove(session.getId());
|
// 获取到信号量则需释放
|
SemaphoreUtils.release(socketSemaphore);
|
}
|
|
/**
|
* 抛出异常时处理
|
*/
|
@OnError
|
public void onError(Session session, Throwable exception) throws Exception
|
{
|
if (session.isOpen())
|
{
|
// 关闭连接
|
session.close();
|
}
|
String sessionId = session.getId();
|
LOGGER.info("\n 连接异常 - {}", sessionId);
|
LOGGER.info("\n 异常信息 - {}", exception);
|
// 移出用户
|
WebSocketUsers.remove(sessionId);
|
// 获取到信号量则需释放
|
SemaphoreUtils.release(socketSemaphore);
|
}
|
|
/**
|
* 服务器接收到客户端消息时调用的方法
|
*/
|
@OnMessage
|
public void onMessage(String message, Session session)
|
{
|
String msg = message.replace("你", "我").replace("吗", "");
|
WebSocketUsers.sendMessageToUserByText(session, msg);
|
}
|
}
|
