diff --git a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/executor/QrcodeRequestExecutor.java b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/executor/QrcodeRequestExecutor.java
index cea0f9620..bf85004ac 100644
--- a/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/executor/QrcodeRequestExecutor.java
+++ b/weixin-java-miniapp/src/main/java/cn/binarywang/wx/miniapp/executor/QrcodeRequestExecutor.java
@@ -16,7 +16,7 @@ import java.io.IOException;
 public abstract class QrcodeRequestExecutor<H, P> implements RequestExecutor<File, AbstractWxMaQrcodeWrapper> {
   protected RequestHttp<H, P> requestHttp;
 
-  public QrcodeRequestExecutor(RequestHttp<H, P> requestHttp) {
+  protected QrcodeRequestExecutor(RequestHttp<H, P> requestHttp) {
     this.requestHttp = requestHttp;
   }
 
@@ -30,10 +30,9 @@ public abstract class QrcodeRequestExecutor<H, P> implements RequestExecutor<Fil
     switch (requestHttp.getRequestType()) {
       case APACHE_HTTP:
         return new ApacheQrcodeFileRequestExecutor(requestHttp, path);
-      case JODD_HTTP:
-        return null;
       case OK_HTTP:
         return new OkHttpQrcodeFileRequestExecutor(requestHttp, path);
+      case JODD_HTTP:
       default:
         return null;
     }
diff --git a/weixin-java-miniapp/src/test/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveGoodsServiceImplTest.java b/weixin-java-miniapp/src/test/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveGoodsServiceImplTest.java
index ccf073a53..5ea3b11ea 100644
--- a/weixin-java-miniapp/src/test/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveGoodsServiceImplTest.java
+++ b/weixin-java-miniapp/src/test/java/cn/binarywang/wx/miniapp/api/impl/WxMaLiveGoodsServiceImplTest.java
@@ -35,13 +35,13 @@ public class WxMaLiveGoodsServiceImplTest {
     WxMaLiveGoodInfo goods = new WxMaLiveGoodInfo();
     goods.setCoverImgUrl(mediaUpload.getMediaId());
     goods.setName("宫廷奢华真丝四件套");
-    goods.setPrice(new BigDecimal("1599"));
-    goods.setPrice2(new BigDecimal("0"));
+    goods.setPrice(BigDecimal.valueOf(1599));
+    goods.setPrice2(BigDecimal.ZERO);
     goods.setPriceType(1);
     goods.setUrl("pages/goods/goods?id=b7c4fbf95493bd294054fe4296d0d9ad");
     WxMaLiveResult liveResult = this.wxService.getLiveGoodsService().addGoods(goods);
     assertNotNull(liveResult);
-    System.out.println(liveResult.toString());
+    System.out.println(liveResult);
   }
 
   @Test
@@ -69,8 +69,8 @@ public class WxMaLiveGoodsServiceImplTest {
     goods.setGoodsId(8);
     goods.setName("宫廷奢华真丝四件套");
     goods.setCoverImgUrl("http://mmbiz.qpic.cn/mmbiz_png/omYktZNGamuUQE0WPVfqdnLV61JDhluXOac7PiaoZeticFpcR7wvicC0aXUC2VXkl7r1gN0QSKosv2satn6oCFeiaQ/0");
-    goods.setPrice(new BigDecimal("2299"));
-    goods.setPrice2(new BigDecimal("0"));
+    goods.setPrice(BigDecimal.valueOf(2299));
+    goods.setPrice2(BigDecimal.ZERO);
     goods.setPriceType(1);
     goods.setUrl("pages/goods/goods?id=b7c4fbf95493bd294054fe4296d0d9ad");
     boolean maLiveInfo = this.wxService.getLiveGoodsService().updateGoods(goods);
@@ -81,13 +81,13 @@ public class WxMaLiveGoodsServiceImplTest {
   public void getGoodsWareHouse() throws Exception {
     WxMaLiveResult liveResult = this.wxService.getLiveGoodsService().getGoodsWareHouse(Arrays.asList(1, 2));
     assertNotNull(liveResult);
-    System.out.println(liveResult.toString());
+    System.out.println(liveResult);
   }
 
   @Test
   public void getApprovedGoods() throws Exception {
     WxMaLiveResult liveResult = this.wxService.getLiveGoodsService().getApprovedGoods(0, 4, 2);
     assertNotNull(liveResult);
-    System.out.println(liveResult.toString());
+    System.out.println(liveResult);
   }
 }
diff --git a/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpService.java b/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpService.java
index 4dadbc174..6b6e30b7f 100644
--- a/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpService.java
+++ b/weixin-java-mp/src/main/java/me/chanjar/weixin/mp/api/WxMpService.java
@@ -70,7 +70,7 @@ public interface WxMpService extends WxService {
    *
    * @return token access token
    * @throws WxErrorException .
-   * @see #getAccessToken(boolean) #getAccessToken(boolean)
+   * @see #getAccessToken(boolean) #getAccessToken(boolean)#getAccessToken(boolean)
    */
   String getAccessToken() throws WxErrorException;
 
@@ -98,7 +98,7 @@ public interface WxMpService extends WxService {
    * @param type ticket 类型
    * @return ticket ticket
    * @throws WxErrorException .
-   * @see #getTicket(TicketType, boolean) #getTicket(TicketType, boolean)
+   * @see #getTicket(TicketType, boolean) #getTicket(TicketType, boolean)#getTicket(TicketType, boolean)
    */
   String getTicket(TicketType type) throws WxErrorException;
 
@@ -120,7 +120,7 @@ public interface WxMpService extends WxService {
    *
    * @return jsapi ticket
    * @throws WxErrorException .
-   * @see #getJsapiTicket(boolean) #getJsapiTicket(boolean)
+   * @see #getJsapiTicket(boolean) #getJsapiTicket(boolean)#getJsapiTicket(boolean)
    */
   String getJsapiTicket() throws WxErrorException;
 
@@ -563,7 +563,7 @@ public interface WxMpService extends WxService {
   /**
    * 返回电子发票报销方相关接口
    *
-   * @return WxMpReimburseInvoiceService
+   * @return WxMpReimburseInvoiceService reimburse invoice service
    */
   WxMpReimburseInvoiceService getReimburseInvoiceService();
 
@@ -804,4 +804,18 @@ public interface WxMpService extends WxService {
    * @param guideMassedJobService the guide service
    */
   void setGuideMassedJobService(WxMpGuideMassedJobService guideMassedJobService);
+
+  /**
+   * Gets merchant invoice service.
+   *
+   * @return the merchant invoice service
+   */
+  WxMpMerchantInvoiceService getMerchantInvoiceService();
+
+  /**
+   * Sets merchant invoice service.
+   *
+   * @param merchantInvoiceService the merchant invoice service
+   */
+  void setMerchantInvoiceService(WxMpMerchantInvoiceService merchantInvoiceService);
 }
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java
index 8f3307cc1..309fb8e75 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java
@@ -101,7 +101,7 @@ public class WxPayUnifiedOrderV3Result implements Serializable {
     private String sign;
 
     private String getSignStr() {
-      return String.format("%s\n%s\n%s\n%s\n", appid, timestamp, noncestr, prepayid);
+      return String.format("%s\n%s\n%s\n%s\n", appid, timestamp, noncestr, prepayId);
     }
   }