文件列表：
database
........\course.cpp,2354,2016-06-25
........\course.h,626,2016-06-25
........\course.ui,2878,2016-06-25
........\database.h,492,2016-06-24
........\login.cpp,194,2016-06-24
........\login.h,265,2016-06-24
........\login.ui,401,2016-06-24
........\main.cpp,352,2016-06-24
........\query.cpp,682,2016-06-24
........\query.h,410,2016-06-24
........\query.ui,1686,2016-06-24
........\select.cpp,568,2016-06-24
........\select.h,634,2016-06-24
........\select.ui,1563,2016-06-25
........\stucourse.cpp,2681,2016-06-25
........\stucourse.h,610,2016-06-24
........\stucourse.ui,2866,2016-06-25
........\test.pro,672,2016-06-24
........\test.pro.user,23738,2016-06-26
........\widget.cpp,3224,2016-06-25
........\widget.h,658,2016-06-25
........\widget.ui,2921,2016-06-25
