2024-09-02

要在Spring Boot中使用WebSocket对接OpenAI的ChatGPT,你需要以下步骤:

  1. 添加Spring Boot WebSocket依赖。
  2. 配置WebSocket。
  3. 创建WebSocket处理器。
  4. 使用OpenAI的SDK与ChatGPT交互。

以下是一个简化的示例:

步骤1: 添加Spring Boot WebSocket依赖。

pom.xml中添加以下依赖:




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

步骤2: 配置WebSocket。

创建一个配置类来定义WebSocket端点。




@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
    @Override
    public void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableSimpleBroker("/topic");
        config.setApplicationDestinationPrefixes("/app");
    }
 
    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/ws").withSockJS();
    }
}

步骤3: 创建WebSocket处理器。

创建一个控制器来处理WebSocket消息。




@Controller
public class ChatWebSocketController {
 
    private final SimpMessagingTemplate simpMessagingTemplate;
 
    // 使用Spring的依赖注入
    @Autowired
    public ChatWebSocketController(SimpMessagingTemplate simpMessagingTemplate) {
        this.simpMessagingTemplate = simpMessagingTemplate;
    }
 
    // 接收客户端发来的消息
    @MessageMapping("/chat.message")
    public void handleChatMessage(Principal principal, String message) {
        // 这里可以使用OpenAI的SDK与ChatGPT交互
        // 发送消息到客户端
        simpMessagingTemplate.convertAndSend("/topic/public.messages", responseFromChatGPT);
    }
}

步骤4: 使用OpenAI的SDK与ChatGPT交互。

你需要使用OpenAI的SDK来与ChatGPT交互。以下是一个假设的例子:




// 假设的与ChatGPT交互的方法
public String interactWithChatGPT(String message) {
    // 使用OpenAI的SDK发送消息到ChatGPT并接收响应
    // 这里的实现需要依赖于OpenAI SDK
    return chatGPT.sendMessage(message);
}

handleChatMessage方法中,你会调用interactWithChatGPT方法来与ChatGPT交互,并将得到的响应发送到客户端。

请注意,这个例子假设你已经有了OpenAI的ChatGPT的访问凭据和相应的SDK。实际中你需要按照OpenAI的SDK文档来集成。

安全提示:确保WebSocket连接安全,并且处理敏感信息时采取相应的安全措施。

2024-09-02

由于问题描述涉及的内容较多,我将提供一个简化的示例来说明如何在Spring Boot项目中集成WebSocket。

  1. 添加依赖到pom.xml



<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
  1. 配置WebSocket:



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");
    }
}
  1. 创建控制器来处理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("/chat")
    @SendTo("/topic/messages")
    public String sendMessage(String message) {
        return message;
    }
}
  1. 在前端使用WebSocket:



<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 type="text/javascript">
    var socket = new WebSocket('ws://' + window.location.host + '/ws');
    var stompClient = Stomp.over(socket);
    stompClient.connect({}, function(frame) {
        console.log('Connected: ' + frame);
        stompClient.subscribe('/topic/messages', fun
2024-09-02

以下是一个简单的Spring Boot应用程序,用于演示如何整合WebSocket。

首先,添加依赖到你的pom.xml




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

然后,配置WebSocket:




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 {
 
    @Autowired
    private SimpMessagingTemplate simpMessagingTemplate;
 
    @MessageMapping("/hello")
    @SendTo("/topic/greetings")
    public String greeting(String message) {
        return "Hello, " + message + "!";
    }
 
    @RequestMapping("/send")
    @ResponseBody
    public String sendMessage(String message) {
        simpMessagingTemplate.convertAndSend("/topic/greetings", "Hello, " + message + "!");
        return "Message sent";
    }
}

这个例子中,我们定义了一个WebSocket端点/ws,并且配置了一个简单的消息代理/topicgreeting方法处理客户端发送到/app/hello的消息,并将处理后的消息广播到/topic/greetingssendMessage方法允许通过/send接口发送消息,它实际上与greeting方法做了同样的事情。

这个例子展示了如何在Spring Boot应用程序中设置WebSocket,并处理简单的消息。在实际应用中,你可能需要添加额外的安全配置,或者处理更复杂的业务逻辑。

2024-09-01



import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
 
import java.nio.charset.StandardCharsets;
 
public class WebsocketGatewayFilter implements GlobalFilter, Ordered {
 
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
 
        // 检查请求是否为WebSocket Upgrade请求
        if (isWebSocketUpgradeRequest(request)) {
            // 修改请求头部,允许WebSocket Upgrade
            response.getHeaders().set("Upgrade", "websocket");
            response.getHeaders().set("Connection", "Upgrade");
 
            // 返回一个空的响应体,实际的WebSocket交互在Upgrade后进行
            return response.setComplete();
        }
 
        // 不是WebSocket Upgrade请求,继续请求链
        return chain.filter(exchange);
    }
 
    private boolean isWebSocketUpgradeRequest(ServerHttpRequest request) {
        // 检查请求方法是否为GET
        if ("GET".equals(request.getMethodValue())) {
            // 检查请求头部是否包含 "Upgrade: websocket"
            return "websocket".equals(request.getHeaders().getUpgrade());
        }
        return false;
    }
 
    @Override
    public int getOrder() {
        // 确保此过滤器在路由之前运行
        return -1;
    }
}

这段代码实现了一个全局过滤器,用于检查进入网关的请求是否是WebSocket的升级请求。如果是,它会修改响应头部,允许客户端进行WebSocket升级,并返回一个空的响应体。这样的过滤器可以用于实现WebSocket代理的场景,在网关层面接入WebSocket连接,并可能与WebSocket路由功能结合,以便在网关层面处理WebSocket事件。

2024-09-01



import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.*;
 
@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");
    }
}

这段代码定义了一个配置类WebSocketConfig,实现了WebSocketMessageBrokerConfigurer接口,并使用@EnableWebSocketMessageBroker注解来启用Spring Boot的WebSocket消息代理功能。registerStompEndpoints方法注册了一个WebSocket端点/ws,并指示用SockJS解决方案提供Polling和其他传输。configureMessageBroker方法配置了一个简单的消息代理用于广播,并设置了应用程序的目的地前缀为/app。这样,客户端可以通过/topic/destination接收广播消息,通过/app/destination发送消息到服务端。

2024-09-01

在Spring Boot中使用外部Tomcat同时使用WebSocket时,可能会遇到的一个常见问题是WebSocket不工作。这通常是因为Servlet容器(例如Tomcat)的配置不正确或缺少对WebSocket支持的处理程序。

解决方法:

  1. 确保你的pom.xmlbuild.gradle中包含了Spring Boot的WebSocket依赖。

对于Maven,添加以下依赖:




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

对于Gradle,添加以下依赖:




implementation 'org.springframework.boot:spring-boot-starter-websocket'
  1. 确保你的Spring Boot应用程序配置了WebSocket。你可以创建一个配置类来扩展WebSocketConfigurer并覆盖相应的方法来注册WebSocket端点。

例如:




@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(myWebSocketHandler(), "/websocket-endpoint")
            .setAllowedOrigins("*");
    }
 
    @Bean
    public WebSocketHandler myWebSocketHandler() {
        return new MyCustomWebSocketHandler();
    }
}
  1. 如果你正在使用外部Tomcat,确保Tomcat的版本支持WebSocket。从Tomcat 7开始,Tomcat内置了对WebSocket的支持。如果你使用的是Tomcat 8或更高版本,应该已经包含了对WebSocket的支持。
  2. 确保你的application.propertiesapplication.yml中没有禁用WebSocket的配置。
  3. 如果你在使用Spring Security,确保WebSocket的端点没有被安全配置拦截。
  4. 如果以上步骤都正确无误,但WebSocket仍然不工作,可以考虑查看日志文件,以找出可能的错误原因。

如果你遵循了以上步骤,但问题依然存在,可能需要进一步检查你的WebSocket处理程序代码或者检查外部Tomcat的配置是否正确。

2024-08-29

以下是一个简化的Java Spring Boot后端代码示例,用于创建WebSocket端点,并在Vue前端接收和显示消息。

Java后端代码:




import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
 
@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {
 
    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(messageHandler(), "/ws/messages")
                .setAllowedOrigins("http://localhost:8080"); // 允许Vue前端的源
    }
 
    @Bean
    public WebSocketMessageHandler messageHandler() {
        return new WebSocketMessageHandler(); // 自定义的WebSocketMessageHandler实现
    }
}

Vue前端代码:




<template>
  <div>
    <div v-for="message in messages" :key="message">{{ message }}</div>
  </div>
</template>
 
<script>
export default {
  data() {
    return {
      messages: [],
      socket: null
    };
  },
  created() {
    this.connectWebSocket();
  },
  methods: {
    connectWebSocket() {
      this.socket = new WebSocket('ws://localhost:8080/ws/messages');
      this.socket.onmessage = this.handleMessage;
      this.socket.onclose = this.handleClose;
      this.socket.onerror = this.handleError;
    },
    handleMessage(event) {
      this.messages.push(event.data);
    },
    handleClose() {
      console.log('WebSocket Closed');
    },
    handleError(event) {
      console.error('WebSocket Error', event);
    },
    sendMessage(message) {
      if (this.socket.readyState === WebSocket.OPEN) {
        this.socket.send(message);
      }
    }
  },
  beforeDestroy() {
    this.socket.close();
  }
};
</script>

在这个例子中,我们创建了一个简单的WebSocket连接,在Vue前端显示从后端接收的消息。记得在实际部署时,WebSocket的URL需要根据实际部署的服务器地址进行相应的替换。

2024-08-29

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:

  1. 添加依赖到你的pom.xml



<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
  1. 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");
    }
}
  1. 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 + "!";
    }
}
  1. 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
2024-08-29



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");
    }
}

这段代码定义了一个配置类WebSocketConfig,该类实现了WebSocketMessageBrokerConfigurer接口。在registerStompEndpoints方法中,我们注册了一个WebSocket端点/ws,并且指示Spring使用SockJS。在configureMessageBroker方法中,我们配置了一个简单的消息代理,监听/topic目的地的消息,并指定所有应用程序目的地都以/app为前缀。这样,客户端可以通过/topic/some.dest接收广播消息,通过/app/some.dest发送消息到服务器。

2024-08-29

在Spring Boot中创建一个WebSocket客户端,你可以使用WebSocketClient类。以下是一个简单的例子,展示了如何使用Spring的WebSocketClient发送和接收消息。

首先,添加Spring WebSocket的依赖到你的pom.xml文件中:




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

然后,你可以创建一个配置类来定义和初始化WebSocket客户端:




import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.client.WebSocketClient;
import org.springframework.web.socket.client.standard.StandardWebSocketClient;
 
import javax.annotation.PostConstruct;
 
@Configuration
public class WebSocketClientConfig {
 
    private WebSocketClient webSocketClient;
 
    @PostConstruct
    public void initWebSocketClient() {
        this.webSocketClient = new StandardWebSocketClient();
    }
 
    // 获取WebSocketClient实例的方法
    public WebSocketClient getWebSocketClient() {
        return webSocketClient;
    }
}

最后,你可以使用WebSocketClient连接到服务器并发送接收消息:




import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.socket.WebSocketHttpHeaders;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.client.WebSocketClient;
 
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
 
public class WebSocketClientRunner {
 
    @Autowired
    private WebSocketClient webSocketClient;
 
    public void startClient(String uri) throws Exception {
        WebSocketHttpHeaders headers = new WebSocketHttpHeaders();
        // 添加自定义头部信息,如果需要的话
        Map<String, Object> handshakeAttributes = new HashMap<>();
 
        final CountDownLatch latch = new CountDownLatch(1);
 
        webSocketClient.doHandshake(new WebSocketHandler() {
            @Override
            public void afterConnectionEstablished(WebSocketSession session) throws Exception {
                // 连接建立后的回调
                latch.countDown();
            }
 
            @Override
            public void handleMessage(WebSocketSession session, WebSocketMessage<?> message) throws Exception {
                // 处理接收到的消息
            }
 
            // 其他的方法可以根据需要实现
        }, headers, uri, handshakeAttributes);
 
        latch.await(); // 等待连接完成
        // 发送消息,使用session发送等...
    }
}

在这个例子中,WebSocketClientRunner类使用了WebSocketClient连接到指定的URI,并在连接建立后实现了WebSocketHandler接口来处