refactor: 项目结构优化与代码生成模板修复

src/main/java/com/youlai/boot/message/controller/SseController.java

@@ -0,0 +1,45 @@
+package com.youlai.boot.message.controller;
+
+import com.youlai.boot.common.result.Result;
+import com.youlai.boot.framework.security.model.SysUserDetails;
+import com.youlai.boot.framework.security.util.SecurityUtils;
+import com.youlai.boot.message.service.SseService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
+
+/**
+ * SSE 控制器
+ */
+@Tag(name = "14. SSE连接")
+@Slf4j
+@RestController
+@RequestMapping("/api/v1/sse")
+@RequiredArgsConstructor
+public class SseController {
+
+    private final SseService sseService;
+
+    @Operation(summary = "建立SSE连接")
+    @GetMapping(value = "/connect", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
+    public SseEmitter connect() {
+        SysUserDetails user = SecurityUtils.getUser().orElse(null);
+        if (user == null) {
+            log.warn("SSE连接失败：未获取到当前用户");
+            return null;
+        }
+        return sseService.createConnection(user.getUsername());
+    }
+
+    @Operation(summary = "获取在线用户数")
+    @GetMapping("/online-count")
+    public Result<Integer> getOnlineCount() {
+        return Result.success(sseService.getOnlineUserCount());
+    }
+}