SpringMVC整合websocket实现消息推送及触发
1.创建websocket握手协议的后台
（1）HandShake的实现类
/**
*Project Name: price
*File Name: HandShake.java
*Package Name: com.yun.websocket
*Date: 2016年9月3日 下午4:44:27
*Copyright (c) 2016,[email protected] All Rights Reserved.
*/
package com.yun.websocket;
import java.util.Map;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.server.HandshakeInterceptor;
/**
*Title: HandShake
*Description:
*@Company: 青岛励图高科
*@author: 刘云生
*@version: v1.0
*@since: JDK 1.7.0_80
*@Date: 2016年9月3日 下午4:44:27
*/
public class HandShake implements HandshakeInterceptor{
@Override
public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response, WebSocketHandler wsHandler,
Map attributes) throws Exception {
// TODO Auto-generated method stub
String jspCode = ((ServletServerHttpRequest) request).getServletRequest().getParameter("jspCode");
// 标记用户
//String userId = (String) session.getAttribute("userId");
if(jspCode!=null){
attributes.put("jspCode", jspCode);
}else{
return false;
}
return true;
}
@Override
public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response, WebSocketHandler wsHandler,
Exception exception) {
// TODO Auto-generated method stub
}
}
（2）MyWebSocketConfig的实现类
/**
*Project Name: price
*File Name: MyWebSocketConfig.java
*Package Name: com.yun.websocket
*Date: 2016年9月3日 下午4:52:29
*Copyright (c) 2016,[email protected] All Rights Reserved.
*/
package com.yun.websocket;
import javax.annotation.Resource;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
/**
*Title: MyWebSocketConfig
*Description:
*@Company: 青岛励图高科
*@author: 刘云生
*@version: v1.0
*@since: JDK 1.7.0_80
*@Date: 2016年9月3日 下午4:52:29
*/
@Component
@EnableWebMvc
@EnableWebSocket
public class MyWebSocketConfig extends WebMvcConfigurerAdapter implements WebSocketConfigurer{
@Resource
MyWebSocketHandler handler;
@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
// TODO Auto-generated method stub
registry.addHandler(handler, "/wsMy").addInterceptors(new HandShake());
registry.addHandler(handler, "/wsMy/sockjs").addInterceptors(new HandShake()).withSockJS();
}
}
（3）MyWebSocketHandler的实现类
/**
*Project Name: price
*File Name: MyWebSocketHandler.java
*Package Name: com.yun.websocket
*Date: 2016年9月3日 下午4:55:12
*Copyright (c) 2016,[email protected] All Rights Reserved.
*/
package com.yun.websocket;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
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.google.gson.GsonBuilder;
/**
*Title: MyWebSocketHandler
*Description:
*@Company: 青岛励图高科
*@author: 刘云生
*@version: v1.0
*@since: JDK 1.7.0_80
*@Date: 2016年9月3日 下午4:55:12
*/
@Component
public class MyWebSocketHandler implements WebSocketHandler{
public static final Map userSocketSessionMap;
static {
userSocketSessionMap = new HashMap();
}
@Override
public void afterConnectionEstablished(WebSocketSession session) throws Exception {
// TODO Auto-generated method stub
String jspCode = (String) session.getHandshakeAttributes().get("jspCode");
if (userSocketSessionMap.get(jspCode) == null) {
userSocketSessionMap.put(jspCode, session);
}
for(int i=0;i<10;i++){
//broadcast(new TextMessage(new GsonBuilder().create().toJson("\"number\":\""+i+"\"")));
session.sendMessage(new TextMessage(new GsonBuilder().create().toJson("\"number\":\""+i+"\"")));
}
}
@Override
public void handleMessage(WebSocketSession session, WebSocketMessage message) throws Exception {
// TODO Auto-generated method stub
//Message msg=new Gson().fromJson(message.getPayload().toString(),Message.class);
//msg.setDate(new Date());
// sendMessageToUser(msg.getTo(), new TextMessage(new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create().toJson(msg)));
session.sendMessage(message);
}
@Override
public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
// TODO Auto-generated method stub
if (session.isOpen()) {
session.close();
}
Iterator> it = userSocketSessionMap
.entrySet().iterator();
// 移除Socket会话
while (it.hasNext()) {
Entry 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;
}
}
}
@Override
public void afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus) throws Exception {
// TODO Auto-generated method stub
System.out.println("Websocket:" + session.getId() + "已经关闭");
Iterator> it = userSocketSessionMap
.entrySet().iterator();
// 移除Socket会话
while (it.hasNext()) {
Entry 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;
}
}
}
@Override
public boolean supportsPartialMessages() {
// TODO Auto-generated method stub
return false;
}
/**
* 群发
* @Title: broadcast
* @Description: TODO
* @param: @param message
* @param: @throws IOException
* @return: void
* @author: 刘云生
* @Date: 2016年9月10日 下午4:23:30
* @throws
*/
public void broadcast(final TextMessage message) throws IOException {
Iterator> it = userSocketSessionMap
.entrySet().iterator();
// 多线程群发
while (it.hasNext()) {
final Entry entry = it.next();
if (entry.getValue().isOpen()) {
new Thread(new Runnable() {
public void run() {
try {
if (entry.getValue().isOpen()) {
entry.getValue().sendMessage(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
}
}
}
/**
* 给所有在线用户的实时工程检测页面发送消息
*
* @param message
* @throws IOException
*/
public void sendMessageToJsp(final TextMessage message,String type) throws IOException {
Iterator> it = userSocketSessionMap
.entrySet().iterator();
// 多线程群发
while (it.hasNext()) {
final Entry entry = it.next();
if (entry.getValue().isOpen() && entry.getKey().contains(type)) {
new Thread(new Runnable() {
public void run() {
try {
if (entry.getValue().isOpen()) {
entry.getValue().sendMessage(message);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
}
}
}
}
2.创建websocket握手处理的前台
3.通过Controller调用进行websocket的后台推送
/**
*Project Name: price
*File Name: GarlicPriceController.java
*Package Name: com.yun.price.garlic.controller
*Date: 2016年6月23日 下午3:23:46
*Copyright (c) 2016,[email protected] All Rights Reserved.
*/
package com.yun.price.garlic.controller;
import java.io.IOException;
import java.util.Date;
import java.util.List;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.socket.TextMessage;
import com.google.gson.GsonBuilder;
import com.yun.common.entity.DataGrid;
import com.yun.price.garlic.dao.entity.GarlicPrice;
import com.yun.price.garlic.model.GarlicPriceModel;
import com.yun.price.garlic.service.GarlicPriceService;
import com.yun.websocket.MyWebSocketHandler;
/**
* Title: GarlicPriceController
* Description:
*
* @Company: 青岛励图高科
* @author: 刘云生
* @version: v1.0
* @since: JDK 1.7.0_80
* @Date: 2016年6月23日 下午3:23:46
*/
@Controller
public class GarlicPriceController {
@Resource
MyWebSocketHandler myWebSocketHandler;
@RequestMapping(value = "GarlicPriceController/testWebSocket", method ={RequestMethod.POST,RequestMethod.GET}, produces = "application/json; charset=utf-8")
@ResponseBody
public String testWebSocket() throws IOException{
myWebSocketHandler.sendMessageToJsp(new TextMessage(new GsonBuilder().create().toJson("\"number\":\""+"GarlicPriceController/testWebSocket"+"\"")), "AAA");
return "1";
}
}4.所用到的jar包
org.springframework
spring-websocket
4.0.1.RELEASE
5.运行的环境
至少tomcat8.0以上版本，否则可能报错