基于rabbitmq的聊天程序
时间: 2023-12-19 16:32:24 浏览: 149
以下是基于RabbitMQ的聊天程序的实现步骤:
1.安装Erlang和RabbitMQ
首先,需要安装Erlang和RabbitMQ。可以按照引用中的步骤进行安装。
2.创建一个Spring Boot项目
使用Spring Initializr创建一个新的Spring Boot项目。在依赖项中添加以下依赖项:
- Spring Web
- Spring for RabbitMQ
- Spring WebSocket
3.创建WebSocket配置类
创建一个WebSocket配置类,用于配置WebSocket端点和消息代理。以下是一个简单的WebSocket配置类:
```java
@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("/chat").withSockJS();
}
}
```
4.创建控制器类
创建一个控制器类,用于处理WebSocket消息。以下是一个简单的控制器类:
```java
@Controller
public class ChatController {
@MessageMapping("/chat.sendMessage")
@SendTo("/topic/public")
public ChatMessage sendMessage(@Payload ChatMessage chatMessage) {
return chatMessage;
}
@MessageMapping("/chat.addUser")
@SendTo("/topic/public")
public ChatMessage addUser(@Payload ChatMessage chatMessage, SimpMessageHeaderAccessor headerAccessor) {
headerAccessor.getSessionAttributes().put("username", chatMessage.getSender());
return chatMessage;
}
}
```
5.创建消息模型类
创建一个消息模型类,用于表示聊天消息。以下是一个简单的消息模型类:
```java
public class ChatMessage {
private MessageType type;
private String content;
private String sender;
// getters and setters
}
```
6.创建前端页面
创建一个前端页面,用于显示聊天消息。可以使用JavaScript和STOMP.js来处理WebSocket消息。以下是一个简单的前端页面:
```html
<!DOCTYPE html>
<html>
<head>
<title>WebSocket Chat Example</title>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script src="https://cdn.jsdelivr.net/sockjs/1.1.4/sockjs.min.js"></script>
<script src="https://cdn.jsdelivr.net/stomp.js/2.3.3/stomp.min.js"></script>
</head>
<body>
<div id="chat">
<div id="messages"></div>
<form id="message-form">
<input type="text" id="message-input" placeholder="Type your message here...">
<button type="submit">Send</button>
</form>
</div>
<script>
var stompClient = null;
function connect() {
var socket = new SockJS('/chat');
stompClient = Stomp.over(socket);
stompClient.connect({}, function(frame) {
console.log('Connected: ' + frame);
stompClient.subscribe('/topic/public', function(message) {
showMessage(JSON.parse(message.body));
});
});
}
function disconnect() {
if (stompClient !== null) {
stompClient.disconnect();
}
console.log("Disconnected");
}
function sendMessage() {
var messageInput = document.getElementById('message-input');
var message = {
type: 'CHAT',
content: messageInput.value,
sender: username
};
stompClient.send("/app/chat.sendMessage", {}, JSON.stringify(message));
messageInput.value = '';
}
function addUser() {
var usernameInput = document.getElementById('username-input');
var username = usernameInput.value;
var message = {
type: 'JOIN',
content: '',
sender: username
};
stompClient.send("/app/chat.addUser", {}, JSON.stringify(message));
document.getElementById('chat').style.display = 'block';
document.getElementById('username').style.display = 'none';
}
function showMessage(message) {
var messageElement = document.createElement('div');
messageElement.classList.add('message');
var senderElement = document.createElement('span');
senderElement.classList.add('sender');
senderElement.innerText = message.sender + ': ';
messageElement.appendChild(senderElement);
var contentElement = document.createElement('span');
contentElement.classList.add('content');
contentElement.innerText = message.content;
messageElement.appendChild(contentElement);
document.getElementById('messages').appendChild(messageElement);
}
document.getElementById('message-form').addEventListener('submit', function(event) {
event.preventDefault();
sendMessage();
});
var username = prompt('Please enter your username:');
if (username != null && username != '') {
connect();
}
</script>
</body>
</html>
```
7.运行应用程序
运行应用程序并访问前端页面。输入用户名并开始聊天。
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