目录一、项目配置与依赖1. 添加依赖2. WebSocket配置类二、WebSocket服务端实现1. 消息实体类2. WebSocket服务核心类3. WebSocket控制器（可选）三、前端实现1. html页面四、功能测试五、高级功能扩展1. 消息持久化2
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