diff --git a/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxBillService.java b/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxBillService.java
index f8e5529..babaf51 100644
--- a/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxBillService.java
+++ b/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxBillService.java
@@ -11,5 +11,5 @@ import java.util.Map;
  */
 public interface WxBillService {
 
-    public Map<String, Object> downloadbill(Date billDate, String billType, Boolean tarType);
+    public Map<String, Object> downloadbill(Date billDate, String billType, boolean tarType);
 }
diff --git a/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java b/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java
index 2601edc..1cb4265 100644
--- a/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java
+++ b/pay-java-wx/src/main/java/com/egzosn/pay/wx/api/WxPayService.java
@@ -549,8 +549,8 @@ public class WxPayService extends BasePayService<WxPayConfigStorage> implements
      * @return 返回支付方下载对账单的结果
      */
     @Override
-    public Map<String, Object> downloadbill(Date billDate, String billType, Boolean tarType) {
-        Map<String, Object> parameters = getDownloadBillParam(billDate, billType,tarType?true:false);
+    public Map<String, Object> downloadbill(Date billDate, String billType, boolean tarType) {
+        Map<String, Object> parameters = getDownloadBillParam(billDate, billType,tarType==true?true:false);
         //设置签名
         return downBillRet(parameters);
     }