MOOC-9 增加获取用户头像接口

site/src/main/java/com/mooctest/crowd/site/controller/UserController.java

@@ -68,6 +68,11 @@ public class UserController extends BaseController{
     }
 
 
+    /**
+     * 获取用户头像接口
+     * @param userId
+     * @return
+     */
     @RequestMapping(value = "/user/image/{userId}", method = RequestMethod.GET)
     public ResponseVO<String> getUserImage(@PathVariable Long userId) {
         return new ResponseVO<>(ServerCode.SUCCESS, userService.getUserImage(userId));