springboot +websocket
时间: 2023-08-18 13:05:59 浏览: 125
springboot+websocket分布式实现
Spring Boot提供了对WebSocket的支持,可以方便地在应用中实现实时通信的功能。下面是使用Spring Boot整合WebSocket的简要步骤:
1. 添加依赖:在pom.xml文件中添加以下依赖:
```xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
```
2. 创建WebSocket配置类:创建一个Java类,命名为WebSocketConfig(或其他名称),并添加`@Configuration`和`@EnableWebSocket`注解,示例代码如下:
```java
@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
registry.addHandler(myHandler(), "/myHandler").setAllowedOrigins("*");
}
@Bean
public WebSocketHandler myHandler() {
return new MyHandler();
}
}
```
3. 创建WebSocket处理器:创建一个Java类,实现`WebSocketHandler`接口,示例代码如下:
```java
public class MyHandler implements WebSocketHandler {
@Override
public void afterConnectionEstablished(WebSocketSession session) throws Exception {
// 连接建立后的处理逻辑
}
@Override
public void handleMessage(WebSocketSession session, WebSocketMessage<?> message) throws Exception {
// 接收到消息后的处理逻辑
}
@Override
public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
// 发生错误时的处理逻辑
}
@Override
public void afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus) throws Exception {
// 连接关闭后的处理逻辑
}
@Override
public boolean supportsPartialMessages() {
return false;
}
}
```
4. 创建Controller:创建一个控制器类,用于处理WebSocket相关的请求,示例代码如下:
```java
@Controller
public class WebSocketController {
@MessageMapping("/sendMessage")
@SendTo("/topic/receiveMessage")
public String sendMessage(String message) {
return message;
}
}
```
5. 编写前端页面:在前端页面中使用JavaScript与WebSocket建立连接,并进行消息的发送和接收,示例代码如下:
```javascript
var socket = new WebSocket('ws://localhost:8080/myHandler');
socket.onopen = function() {
console.log('WebSocket连接已建立');
};
socket.onmessage = function(event) {
var message = event.data;
console.log('接收到消息:' + message);
};
function sendMessage() {
var message = document.getElementById('messageInput').value;
socket.send(message);
}
```
以上是使用Spring Boot整合WebSocket的简要步骤,可以根据具体需求进行适当调整和扩展。
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