#319 增加“退款结果通知“处理方法，并优化调整微信支付相关代码

Author: binarywang

weixin-java-common/src/main/java/me/chanjar/weixin/common/util/crypto/WxCryptUtil.java

@@ -47,7 +47,6 @@ protected DocumentBuilder initialValue() {
   protected String appidOrCorpid;
 
   public WxCryptUtil() {
-    super();
   }
 
   /**
@@ -106,7 +105,7 @@ private static int bytesNetworkOrder2Number(byte[] bytesInNetworkOrder) {
   private static String genRandomStr() {
     String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
     Random random = new Random();
-    StringBuffer sb = new StringBuffer();
+    StringBuilder sb = new StringBuilder();
     for (int i = 0; i < 16; i++) {
       int number = random.nextInt(base.length());
       sb.append(base.charAt(number));
@@ -148,12 +147,11 @@ public String encrypt(String plainText) {
     String encryptedXml = encrypt(genRandomStr(), plainText);
 
     // 生成安全签名
-    String timeStamp = Long.toString(System.currentTimeMillis() / 1000l);
+    String timeStamp = Long.toString(System.currentTimeMillis() / 1000L);
     String nonce = genRandomStr();
 
     String signature = SHA1.gen(this.token, timeStamp, nonce, encryptedXml);
-    String result = generateXml(encryptedXml, signature, timeStamp, nonce);
-    return result;
+    return generateXml(encryptedXml, signature, timeStamp, nonce);
   }
 
   /**
@@ -194,9 +192,7 @@ protected String encrypt(String randomStr, String plainText) {
       byte[] encrypted = cipher.doFinal(unencrypted);
 
       // 使用BASE64对加密后的字符串进行编码
-      String base64Encrypted = base64.encodeToString(encrypted);
-
-      return base64Encrypted;
+      return base64.encodeToString(encrypted);
     } catch (Exception e) {
       throw new RuntimeException(e);
     }
@@ -228,8 +224,7 @@ public String decrypt(String msgSignature, String timeStamp, String nonce, Strin
     }
 
     // 解密
-    String result = decrypt(cipherText);
-    return result;
+    return decrypt(cipherText);
   }
 
   /**

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/WxPayOrderNotifyResponse.java renamed to weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/notify/WxPayNotifyResponse.java

@@ -1,4 +1,4 @@
-package com.github.binarywang.wxpay.bean;
+package com.github.binarywang.wxpay.bean.notify;
 
 import com.thoughtworks.xstream.XStream;
 import com.thoughtworks.xstream.annotations.XStreamAlias;
@@ -7,8 +7,11 @@
 import me.chanjar.weixin.common.util.xml.XStreamCDataConverter;
 import me.chanjar.weixin.common.util.xml.XStreamInitializer;
 
+/**
+ * 微信支付订单和退款的异步通知共用的响应类
+ */
 @XStreamAlias("xml")
-public class WxPayOrderNotifyResponse {
+public class WxPayNotifyResponse {
   @XStreamOmitField
   private transient static final String FAIL = "FAIL";
   @XStreamOmitField
@@ -21,25 +24,25 @@ public class WxPayOrderNotifyResponse {
   @XStreamAlias("return_msg")
   private String returnMsg;
 
-  public WxPayOrderNotifyResponse() {
+  public WxPayNotifyResponse() {
     super();
   }
 
-  public WxPayOrderNotifyResponse(String returnCode, String returnMsg) {
+  public WxPayNotifyResponse(String returnCode, String returnMsg) {
     super();
     this.returnCode = returnCode;
     this.returnMsg = returnMsg;
   }
 
   public static String fail(String msg) {
-    WxPayOrderNotifyResponse response = new WxPayOrderNotifyResponse(FAIL, msg);
+    WxPayNotifyResponse response = new WxPayNotifyResponse(FAIL, msg);
     XStream xstream = XStreamInitializer.getInstance();
     xstream.autodetectAnnotations(true);
     return xstream.toXML(response);
   }
 
   public static String success(String msg) {
-    WxPayOrderNotifyResponse response = new WxPayOrderNotifyResponse(SUCCESS, msg);
+    WxPayNotifyResponse response = new WxPayNotifyResponse(SUCCESS, msg);
     XStream xstream = XStreamInitializer.getInstance();
     xstream.autodetectAnnotations(true);
     return xstream.toXML(response);

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/WxPayOrderNotifyCoupon.java renamed to weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/notify/WxPayOrderNotifyCoupon.java

@@ -1,4 +1,4 @@
-package com.github.binarywang.wxpay.bean;
+package com.github.binarywang.wxpay.bean.notify;
 
 import org.apache.commons.lang3.builder.ToStringBuilder;
 import org.apache.commons.lang3.builder.ToStringStyle;

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayOrderNotifyResult.java renamed to weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/notify/WxPayOrderNotifyResult.java

@@ -1,6 +1,6 @@
-package com.github.binarywang.wxpay.bean.result;
+package com.github.binarywang.wxpay.bean.notify;
 
-import com.github.binarywang.wxpay.bean.WxPayOrderNotifyCoupon;
+import com.github.binarywang.wxpay.bean.result.WxPayBaseResult;
 import com.github.binarywang.wxpay.converter.WxPayOrderNotifyResultConverter;
 import com.thoughtworks.xstream.XStream;
 import com.thoughtworks.xstream.annotations.XStreamAlias;
@@ -20,7 +20,6 @@
  */
 @XStreamAlias("xml")
 public class WxPayOrderNotifyResult extends WxPayBaseResult implements Serializable {
-
   private static final long serialVersionUID = 5389718115223345496L;
 
   /**