Spring Cloud Gateway 如何支持 WebSocket 连接的转发和路由,请举个例子
时间: 2024-03-05 14:53:19 浏览: 214
Spring Cloud Gateway 可以通过添加 WebSocket 路由来支持 WebSocket 连接的转发和路由。
下面是一个简单的示例,演示了如何将 WebSocket 连接路由到另一个服务器:
首先,在 Spring Cloud Gateway 的配置文件中,需要添加一个名为 `websocket_route` 的路由规则,如下:
```yaml
spring:
cloud:
gateway:
routes:
- id: websocket_route
uri: ws://localhost:8081
predicates:
- Path=/websocket/**
filters:
- RewritePath=/websocket/(?<segment>.*), /$\{segment}
```
然后,在另一个服务器上启动 WebSocket 服务,例如,可以使用 Spring Boot 和 Spring WebSocket 来实现:
```java
@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
registry.addHandler(myHandler(), "/myHandler")
.setAllowedOrigins("*")
.withSockJS();
}
@Bean
public WebSocketHandler myHandler() {
return new MyHandler();
}
}
public class MyHandler implements WebSocketHandler {
@Override
public void afterConnectionEstablished(WebSocketSession session) throws Exception {
System.out.println("New WebSocket connection established.");
}
@Override
public void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
System.out.println("Received message: " + message.getPayload());
session.sendMessage(new TextMessage("Hello, " + message.getPayload() + "!"));
}
@Override
public void handleBinaryMessage(WebSocketSession session, BinaryMessage message) throws Exception {
// ...
}
@Override
public void handlePongMessage(WebSocketSession session, PongMessage message) throws Exception {
// ...
}
@Override
public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
System.err.println("WebSocket error occurred: " + exception.getMessage());
}
@Override
public void afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus) throws Exception {
System.out.println("WebSocket connection closed.");
}
@Override
public boolean supportsPartialMessages() {
return false;
}
}
```
最后,您可以使用浏览器或其他 WebSocket 客户端应用程序来访问您的 WebSocket 服务,例如,访问 `ws://localhost:8080/websocket/myHandler`。所有传入的 WebSocket 连接都将被路由到 `localhost:8081/myHandler`,并由 WebSocket 服务处理。
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