本文为大家分享了SpringMVC整合websocket实现消息推送，供大家参考，具体内容如下
1.创建websocket握手协议的后台
（1）HandShake的实现类
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/** *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) 2016,578888218@qq.com 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<br/> *Description: *@Company: 青岛励图高科<br/> *@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 <br/> */public class HandShake implements HandshakeInterceptor{ @Override public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response, WebSocketHandler wsHandler, Map<String, Object> 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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/** *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) 2016,578888218@qq.com 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<br/> *Description: *@Company: 青岛励图高科<br/> *@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 <br/> */@Component@EnableWebMvc@EnableWebSocketpublic 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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/** *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) 2016,578888218@qq.com 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<br/> *Description: *@Company: 青岛励图高科<br/> *@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 <br/> */@Componentpublic class MyWebSocketHandler implements WebSocketHandler{ public static final Map<String, WebSocketSession> userSocketSessionMap; static { userSocketSessionMap = new HashMap<String, WebSocketSession>(); } @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<Entry<String, WebSocketSession>> it = userSocketSessionMap .entrySet().iterator(); // 移除Socket会话 while (it.hasNext()) { Entry<String, 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; } } } @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<Entry<String, WebSocketSession>> it = userSocketSessionMap .entrySet().iterator(); // 移除Socket会话 while (it.hasNext()) { Entry<String, 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; } } } @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<Entry<String, WebSocketSession>> it = userSocketSessionMap .entrySet().iterator(); // 多线程群发 while (it.hasNext()) { final Entry<String, WebSocketSession> 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<Entry<String, WebSocketSession>> it = userSocketSessionMap .entrySet().iterator(); // 多线程群发 while (it.hasNext()) { final Entry<String, WebSocketSession> 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
?
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
<script> var path = '<%=basePath%>'; var userId = 'lys'; if(userId==-1){ window.location.href="<%=basePath2%>" rel="external nofollow" ; } var jspCode = userId+"_AAA"; var websocket; if ('WebSocket' in window) { websocket = new WebSocket("ws://" + path + "wsMy?jspCode=" + jspCode); } else if ('MozWebSocket' in window) { websocket = new MozWebSocket("ws://" + path + "wsMy?jspCode=" + jspCode); } else { websocket = new SockJS("http://" + path + "wsMy/sockjs?jspCode=" + jspCode); } websocket.onopen = function(event) { console.log("WebSocket:已连接"); console.log(event); }; websocket.onmessage = function(event) { var data = JSON.parse(event.data); console.log("WebSocket:收到一条消息-norm", data); alert("WebSocket:收到一条消息"); }; websocket.onerror = function(event) { console.log("WebSocket:发生错误 "); console.log(event); }; websocket.onclose = function(event) { console.log("WebSocket:已关闭"); console.log(event); } </script> |
3.通过Controller调用进行websocket的后台推送
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/** *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) 2016,578888218@qq.com 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<br/> * Description: * * @Company: 青岛励图高科<br/> * @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 <br/> */@Controllerpublic 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
|
1
2
3
4
5
|
<dependency> <groupId>org.springframework</groupId> <artifactId>spring-websocket</artifactId> <version>4.0.1.RELEASE</version> </dependency> |
5.运行的环境
至少tomcat8.0以上版本，否则可能报错
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/liuyunshengsir/article/details/52495919
