Springboot集成websocket
在Spring Boot中集成WebSocket,你可以使用Spring的@EnableWebSocketMessageBroker
注解来配置一个WebSocket消息代理。以下是一个简单的例子:
- 添加依赖到你的
pom.xml
:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
- 配置WebSocketMessageBroker:
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
@Override
public void registerStompEndpoints(StompEndpointRegistry registry) {
registry.addEndpoint("/ws").withSockJS();
}
@Override
public void configureMessageBroker(MessageBrokerRegistry registry) {
registry.enableSimpleBroker("/topic");
registry.setApplicationDestinationPrefixes("/app");
}
}
- 创建一个控制器来处理WebSocket消息:
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.messaging.handler.annotation.MessageMapping;
import org.springframework.messaging.handler.annotation.SendTo;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class WebSocketController {
@MessageMapping("/hello")
@SendTo("/topic/greetings")
public String greeting(String message) {
return "Hello, " + message + "!";
}
}
- 前端使用SockJS和STOMP:
<script src="https://cdn.jsdelivr.net/npm/sockjs-client@1.7.0/dist/sockjs.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/stompjs@2.3.3/stomp.min.js"></script>
<script>
var socket = new WebSocket('ws://localhost:8080/ws');
var stompClient = Stomp.over(socket);
stompClient.connect({}, function(frame) {
console.log('Connected: ' + frame);
stompClient.subscribe('/topic/greetings', function(greeting){
console.log(greeting.body);
});
});
function sendName() {
s
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