RealControlSocketHandler.java
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package com.bsth.websocket.handler;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Set;
import org.springframework.stereotype.Component;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.WebSocketMessage;
import org.springframework.web.socket.WebSocketSession;
import com.bsth.common.Constants;
import com.bsth.vehicle.common.CommonMapped;
/**
* 注意：在sendMsg时，多线程状态下有几率出现连接状态脏读，建议 synchronized
* @author PanZhao
*/
@Component
public class RealControlSocketHandler implements WebSocketHandler {
private static final ArrayList<WebSocketSession> users;
static {
users = new ArrayList<WebSocketSession>();
}
@Override
public void afterConnectionClosed(WebSocketSession session, CloseStatus arg1)
throws Exception {
users.remove(session);
}
@Override
public void afterConnectionEstablished(WebSocketSession session)
throws Exception {
users.add(session);
}
@Override
public void handleMessage(WebSocketSession arg0, WebSocketMessage<?> arg1)
throws Exception {
}
@Override
public void handleTransportError(WebSocketSession session, Throwable arg1)
throws Exception {
if(session.isOpen()){
session.close();
}
users.remove(session);
}
@Override
public boolean supportsPartialMessages() {
return false;
}
/**
* 给所有在线用户发送消息
*
* @param message
*/
public synchronized void sendMessageToUsers(TextMessage message) {
for (WebSocketSession user : users) {
try {
if (user.isOpen()) {
user.sendMessage(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 给某些用户发送消息
*
* @param userId
* @param message
*/
public synchronized void sendMessageToUser(Set<String> uids, String msg) {
TextMessage message = new TextMessage(msg.getBytes());
for (WebSocketSession user : users) {
if (uids.contains(user.getAttributes().get(Constants.SESSION_USERNAME))) {
try {
if (user.isOpen()) {
user.sendMessage(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 根据线路推送消息
*
* @param userId
* @param message
*/
public synchronized void sendMessageToLine(Integer lineCode, String msg) {
Set<String> uids = CommonMapped.lineUserMap.get(lineCode);
if(null == uids || uids.size() == 0)
return;
TextMessage message = new TextMessage(msg.getBytes());
for (WebSocketSession user : users) {
if (uids.contains(user.getAttributes().get(Constants.SESSION_USERNAME))) {
try {
if (user.isOpen()) {
user.sendMessage(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}