🐛 Fixing a bug. #2596 微信公众号模块查询为null导致错误

pigx-visual/pigx-mp-platform/src/main/java/com/pig4cloud/pigx/mp/handler/LogHandler.java

@@ -49,6 +49,10 @@ public class LogHandler extends AbstractHandler {
 		WxAccountFans fans = fansMapper
 				.selectOne(Wrappers.<WxAccountFans>lambdaQuery().eq(WxAccountFans::getOpenid, wxMessage.getFromUser()));
 
+		if (fans == null) {
+			return null;
+		}
+
 		WxMsg wxMsg = new WxMsg();
 		wxMsg.setWxUserId(fans.getId());
 		wxMsg.setNickName(fans.getNickname());

pigx-visual/pigx-mp-platform/src/main/java/com/pig4cloud/pigx/mp/handler/SubscribeHandler.java

@@ -59,6 +59,9 @@ public class SubscribeHandler extends AbstractHandler {
 			if (wxAccountFans != null) {
 				wxAccountFansMapper.deleteById(wxAccountFans);
 			}
+			else {
+				wxAccountFans = new WxAccountFans();
+			}
 
 			wxAccountFans.setOpenid(wxMpUser.getOpenId());
 			wxAccountFans.setSubscribeStatus(String.valueOf(BooleanUtil.toInt(wxMpUser.getSubscribe())));