diff --git a/src/com/engine/salary/util/page/PageInfo.java b/src/com/engine/salary/util/page/PageInfo.java
index 4bf022f2f..d40ba7554 100644
--- a/src/com/engine/salary/util/page/PageInfo.java
+++ b/src/com/engine/salary/util/page/PageInfo.java
@@ -25,6 +25,7 @@ public class PageInfo<T> extends com.github.pagehelper.PageInfo<T> {
 
     public PageInfo(Class<T> clazz) {
         this.clazz = clazz;
+        this.columns = buildColumns();
     }
 
     public PageInfo(List<T> list) {
@@ -34,10 +35,11 @@ public class PageInfo<T> extends com.github.pagehelper.PageInfo<T> {
     public PageInfo(List<T> list, Class<T> clazz) {
         super(list);
         this.clazz = clazz;
+        this.columns = buildColumns();
     }
 
 
-    public List<Column> getColumns() {
+    public List<Column> buildColumns() {
         if(clazz==null){
             return this.columns;
         }