ADD: generate CategoryId

recommend-server-service/src/main/java/com/tzld/piaoquan/recommend/server/service/RecommendService.java

@@ -431,7 +431,7 @@ public class RecommendService {
                 }
             }
         }
-        if (StringUtils.isNotBlank(request.getCategoryId())) {
+        if (StringUtils.isNotBlank(request.getCategoryId()) && StringUtils.isNumeric(request.getCategoryId())) {
             param.setCategoryId(Integer.parseInt(request.getCategoryId()));
         }