diff --git a/renren-admin/src/main/java/io/renren/common/controller/CensusControllerV2.java b/renren-admin/src/main/java/io/renren/common/controller/CensusControllerV2.java
index c0658802..9495a5e3 100644
--- a/renren-admin/src/main/java/io/renren/common/controller/CensusControllerV2.java
+++ b/renren-admin/src/main/java/io/renren/common/controller/CensusControllerV2.java
@@ -292,7 +292,7 @@ public class CensusControllerV2 {
             });
         });
         CompletableFuture<Void> allKnowledgeVisitsAmount = CompletableFuture.supplyAsync(() -> { // 获取平台知识库浏览量
-            return jdbcTemplate.queryForObject("SELECT SUM(visits) visits FROM tb_data_resource WHERE type ='知识库' AND del_flag = 0;", Long.class);
+            return jdbcTemplate.queryForObject("SELECT IFNULL(SUM(visits),0) visits FROM tb_data_resource WHERE type ='知识库' AND del_flag = 0;", Long.class);
         }).thenAccept(sum -> {
             result.add(new HashMap<String, Object>() {
                 {
@@ -434,7 +434,7 @@ public class CensusControllerV2 {
                         List<Map> lists = JSON.parseArray(ja, Map.class);
                         ArrayList<Map> list = new ArrayList<>();
                         lists.forEach(item -> {
-                            list.add(new HashMap<String, Object>(){{
+                            list.add(new HashMap<String, Object>() {{
                                 put("服务名称", item.get("zyname"));
                                 put("申请次数", item.get("syqk"));
                             }});