fix recommend num

rankin-api-web/src/main/java/cn/rankin/apiweb/controller/RecommendController.java

@@ -44,13 +44,13 @@ public class RecommendController {
 
         List<RecommendVo> result = new ArrayList<>();
 
-        //查询浏览历史课程ID,已去重
+        //查询浏览历史课程ID,已去重,排序
         List<String> pids = eventService.getCoursesFromLogs(user.getUid());
         if(pids != null && pids.size() > 0){
             log.info("get course ids from logs, courseIds={}", pids);
             //如果有浏览历史，提取浏览历史前五展示    (目前推荐位为5)
             pids.forEach(pid -> {
-                if(result.size() <= RECOMMEND_NUM){
+                if(result.size() < RECOMMEND_NUM){
                     Course course = productService.getCourse(pid);
                     if(course != null){
                         /*RecommendVo vo = new RecommendVo();