diff --git a/boot-service/src/main/java/com/xwbing/demo/demo.java b/boot-service/src/main/java/com/xwbing/demo/demo.java
index 8ddd814..65c45d0 100644
--- a/boot-service/src/main/java/com/xwbing/demo/demo.java
+++ b/boot-service/src/main/java/com/xwbing/demo/demo.java
@@ -1,6 +1,6 @@
 package com.xwbing.demo;
 
-import java.util.concurrent.ExecutionException;
+import com.alibaba.fastjson.JSONObject;
 
 /**
  * 项目名称: boot-module-demo
@@ -9,8 +9,9 @@ import java.util.concurrent.ExecutionException;
  * 说明: 测试用
  */
 public class demo {
-    public static void main(String[] args) throws ExecutionException, InterruptedException {
-        int i = "222".compareTo("222");
-        System.out.println(i);
+    public static void main(String[] args) {
+        JSONObject jsonObject = new JSONObject();
+        jsonObject.put("aa", null);
+        System.out.println(jsonObject);
     }
 }
diff --git a/boot-service/src/main/java/com/xwbing/util/PageUtil.java b/boot-service/src/main/java/com/xwbing/util/PageUtil.java
index 221541e..2a3322b 100644
--- a/boot-service/src/main/java/com/xwbing/util/PageUtil.java
+++ b/boot-service/src/main/java/com/xwbing/util/PageUtil.java
@@ -1,9 +1,8 @@
 package com.xwbing.util;
 
-import com.alibaba.fastjson.JSONArray;
-
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -11,18 +10,16 @@ import java.util.Map;
  * 说明: 列表分页工具类
  */
 public class PageUtil {
-    private int start;
-
-    public static Map<String, Object> page(JSONArray array, int currentPage, int pageSize) {
+    public static Map<String, Object> page(List list, int currentPage, int pageSize) {
         Map<String, Object> pageMap = new HashMap<>();
-        int size = array.size();
+        int size = list.size();
         pageMap.put("count", size);
         int start = (currentPage - 1) * pageSize;
         if (start >= size) {
             pageMap.put("data", Collections.emptyList());
         }
-        int end = pageSize * currentPage>size?size:pageSize * currentPage;
-        pageMap.put("data", array.subList(start, end));
+        int end = pageSize * currentPage > size ? size : pageSize * currentPage;
+        pageMap.put("data", list.subList(start, end));
         int totalPage = size % pageSize == 0 ? size / pageSize : size / pageSize + 1;
         pageMap.put("totalPage", totalPage);
         return pageMap;