issue #107 请给实体类加上Serializable

weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxAccessToken.java

@@ -2,7 +2,9 @@ package me.chanjar.weixin.common.bean;
 
 import me.chanjar.weixin.common.util.json.WxGsonBuilder;
 
-public class WxAccessToken {
+import java.io.Serializable;
+
+public class WxAccessToken implements Serializable {
 
   private String accessToken;
   

weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxJsapiSignature.java

@@ -1,9 +1,11 @@
 package me.chanjar.weixin.common.bean;
 
+import java.io.Serializable;
+
 /**
  * jspai signature
  */
-public class WxJsapiSignature {
+public class WxJsapiSignature implements Serializable {
 
   private String noncestr;
 

weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxMenu.java

@@ -2,6 +2,7 @@ package me.chanjar.weixin.common.bean;
 
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -12,7 +13,7 @@ import me.chanjar.weixin.common.util.json.WxGsonBuilder;
  * @author Daniel Qian
  *
  */
-public class WxMenu {
+public class WxMenu implements Serializable {
 
   private List<WxMenuButton> buttons = new ArrayList<WxMenuButton>();
 

weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxError.java

@@ -2,13 +2,15 @@ package me.chanjar.weixin.common.bean.result;
 
 import me.chanjar.weixin.common.util.json.WxGsonBuilder;
 
+import java.io.Serializable;
+
 /**
  * 微信错误码说明
  * http://mp.weixin.qq.com/wiki/index.php?title=全局返回码说明
  * @author Daniel Qian
  *
  */
-public class WxError {
+public class WxError implements Serializable {
 
   private int errorCode;
   

weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxMediaUploadResult.java

@@ -2,7 +2,9 @@ package me.chanjar.weixin.common.bean.result;
 
 import me.chanjar.weixin.common.util.json.WxGsonBuilder;
 
-public class WxMediaUploadResult {
+import java.io.Serializable;
+
+public class WxMediaUploadResult implements Serializable {
 
   private String type;
   private String mediaId;