针对后见之明分析的JSP在线考试系统，老师可以选择手工指定和自动随机出题，可以改变学生的类型，对考试结果给出图表和execl表格输出。-Hindsight analysis for a JSP online examination system, teachers can choose to manually specify and automatic random questions, you can change the type of students, the exam results