学习spring+hibernate+struts2的Demo，初学者可以参考次系统中的代码学习，对初学者很有好处。-Learning spring+ hibernate+ struts2 of the Demo, beginners can refer to the sub-system, code learning, is very good for beginners.

一个简单的加权分数计算,输入各成绩的比重,好用,简单。-A simple weighted score calculation, enter the proportion of each grade, easy to use, simple.