您的错误在以下两行中:
int daysoutput = Days.daysBetween(datestartdaytime, datestartdaytime).getDays() % 30; int hoursoutput = Hours.hoursBetween(datestartdaytime, datestartdaytime).getHours() % 24;
您打算将其
dateenddaytime用作第二个参数:
int daysoutput = Days.daysBetween(datestartdaytime, dateenddaytime).getDays() % 30; int hoursoutput = Hours.hoursBetween(datestartdaytime, dateenddaytime).getHours() % 24;



