- (void)onReq:(BaseReq*)req

{

//获取开放标签传递的extinfo数据逻辑

if ([req isKindOfClass:[LaunchFromWXReq class]])

{

WXMediaMessage *msg = req.message;

NSString *openID = req.openID;

NSString *extinfo = req.msg.messageExt;

// handle...

}

}