输出例子:<序号=1,进站时间=08:01,进站站点=S1,出站时间=09:30,出站站点=S10,消费金额=4>
ostringstream oss;
oss << "<序号=" << index <<",进站时间=";
oss <<setfill('0') ;
oss <<setw(2)<<log[i].enterTime.hour<<":"<<setw(2)<<log[i].enterTime.minutes;
oss <<",进站站点="<<log[i].enterStation<<",出站时间=";
oss <<setfill('0') ;
oss <<setw(2)<<log[i].exitTime.hour<<":"<<setw(2)<<log[i].exitTime.minutes;
oss <<",出站站点="<<log[i].exitStation
<<",消费金额="<<log[i].money
<<">\r\n";