在struts里面,我用了<html:file> 他在ActionForm中是一个数组,程序没有执行到Action就抛出异常 下面是我的ActionForm代码,麻烦大家提点意见: ...

Developers make assumptions about how our code will behave when executed, but we’re not always right. Without certainty, it is challenging to write programs that work correctly at runtime. Java ...