Merge branch 'test6.9.7' of http://git.yoho.cn/ufo/yohoufo-fore into test6.9.7

@@ -242,7 +242,9 @@ public class HkAccountSettlement {
                 .subject("UFO香港卖家结算")
                 .to(configReader.getString("ufo.order.seller.hkAccountSettlementEmailTo", "xiuchun.luo@yoho.cn"))
                 .body("打款提醒：您有新的订单需要打款", "text/html;charset=utf-8")
-                .attachment("卖家结算清单.csv", buildDate(tradeBillResults), "application/x-csv;charset=utf-8")
+                .attachment("卖家结算清单.csv",
+                        // csv的文件头设置BOM(Byte order mark)来解决中文乱码问题
+                        '\ufeff' + buildDate(tradeBillResults), "application/x-csv;charset=utf-8")
                 .send();
     }