diff --git a/221801121&221801131/java/edu/fzu/postsearch/servlet/PostServlet.java b/221801121&221801131/java/edu/fzu/postsearch/servlet/PostServlet.java
index 642f85d59..c3b46df10 100644
--- a/221801121&221801131/java/edu/fzu/postsearch/servlet/PostServlet.java
+++ b/221801121&221801131/java/edu/fzu/postsearch/servlet/PostServlet.java
@@ -31,18 +31,19 @@ public void service(HttpServletRequest req, HttpServletResponse resp) throws Ser
         int maxPage = 0;// 最大页
         int pageCount = posts.size();// 得到查询出来的所有数据的数目
         // 如果是第一次执行,就会接收不到数据
-        if ((strNum == null)||(strNum.equals(""))) {
-            strNum = "0";
-        } else {// 接收到了用户点击的第几(pageNum)页
-            pageNum = Integer.parseInt(strNum);
-            if (pageNum < 0 || pageNum > maxPage)pageNum = 0;
-        }
         // 计算出要分多少页
         if (pageCount % 31 == 0) {
             maxPage = pageCount / 31;
         } else {
             maxPage = pageCount / 31 + 1;
         }
+        if ((strNum == null)||(strNum.equals(""))) {
+            strNum = "0";
+        } else {// 接收到了用户点击的第几(pageNum)页
+            pageNum = Integer.parseInt(strNum);
+            if (pageNum < 0 || pageNum > maxPage)pageNum = 0;
+        }
+
         req.setAttribute("maxPage", maxPage);// 存储最大页数
         req.setAttribute("pageNum", pageNum);// 将当前页面存储起来,给分页页面使用
         req.setAttribute("posts", posts);