diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v2/WechatV2Client.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v2/WechatV2Client.java
index 16fcc8e..0e132b0 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v2/WechatV2Client.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v2/WechatV2Client.java
@@ -48,4 +48,9 @@ public class WechatV2Client {
     public WechatMetaBean getWechatMetaBean() {
         return wechatMetaBean;
     }
+
+
+    public static void main(String[] args) {
+        System.out.println("hello 2021");
+    }
 }
diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/SignatureProvider.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/SignatureProvider.java
index fb66c98..f5d054e 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/SignatureProvider.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/SignatureProvider.java
@@ -289,8 +289,8 @@ public class SignatureProvider {
             cipher.init(Cipher.ENCRYPT_MODE, certificate.getPublicKey());
 
             byte[] data = message.getBytes(StandardCharsets.UTF_8);
-            byte[] cipherdata = cipher.doFinal(data);
-          return Base64Utils.encodeToString(cipherdata);
+            byte[] cipherData = cipher.doFinal(data);
+          return Base64Utils.encodeToString(cipherData);
 
         } catch (Exception e) {
             throw new PayException(e);
diff --git a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java
index 6b07c3b..515b3e1 100644
--- a/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java
+++ b/payment-spring-boot-autoconfigure/src/main/java/cn/felord/payment/wechat/v3/WechatPayClient.java
@@ -26,6 +26,7 @@ import cn.felord.payment.wechat.v3.model.ResponseSignVerifyParams;
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import org.springframework.core.io.Resource;
 import org.springframework.http.*;
+import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter;
 import org.springframework.util.Assert;
@@ -336,6 +337,7 @@ public class WechatPayClient {
      */
     private void applyDefaultRestTemplate() {
         RestTemplate restTemplate = new RestTemplate();
+        restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory());
         DefaultResponseErrorHandler errorHandler = new WechatPayResponseErrorHandler();
         restTemplate.setErrorHandler(errorHandler);
         List<HttpMessageConverter<?>> messageConverters = restTemplate.getMessageConverters();