帮我写SpringBoot使用WebSocket实现简单的网页一对一聊天功能的代码

好的，我可以回答这个问题。以下是使用SpringBoot实现WebSocket的简单一对一聊天功能的代码示例：

1. 首先，在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>

2. 创建一个WebSocket配置类，用于配置WebSocket相关的参数：

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(chatWebSocketHandler(), "/chat").setAllowedOrigins("*");
    }

    @Bean
    public WebSocketHandler chatWebSocketHandler() {
        return new ChatWebSocketHandler();
    }
}

3. 创建一个WebSocket处理器类，用于处理WebSocket连接、消息发送等操作：

public class ChatWebSocketHandler extends TextWebSocketHandler {

    private static final Map<String, WebSocketSession> sessions = new ConcurrentHashMap<>();

    @Override
    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
        sessions.put(session.getId(), session);
    }

    @Override
    protected void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
        String payload = message.getPayload();
        JSONObject jsonObject = JSONObject.parseObject(payload);
        String to = jsonObject.getString("to");
        String content = jsonObject.getString("content");
        WebSocketSession toSession = sessions.get(to);
        if (toSession != null && toSession.isOpen()) {
            toSession.sendMessage(new TextMessage(content));
        }
    }

    @Override
    public void afterConnectionClosed(WebSocketSession session, CloseStatus status) throws Exception {
        sessions.remove(session.getId());
    }
}

4. 在前端页面中使用JavaScript连接WebSocket，并发送消息：

var ws = new WebSocket("ws://localhost:808/chat");
ws.onopen = function() {
    console.log("WebSocket连接成功");
};
ws.onmessage = function(event) {
    console.log("收到消息：" + event.data);
};
ws.onclose = function() {
    console.log("WebSocket连接关闭");
};
function send() {
    var to = document.getElementById("to").value;
    var content = document.getElementById("content").value;
    var message = {
        to: to,
        content: content
    };
    ws.send(JSON.stringify(message));
}

以上就是使用SpringBoot实现WebSocket的简单一对一聊天功能的代码示例。