作业帮execute是啥意思public class BookAddAction extends Action{ public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response)throws Exception {BookService service = new BookServiceImpl();ser
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execute是啥意思public class BookAddAction extends Action{ public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response)throws Exception {BookService service = new BookServiceImpl();ser
execute是啥意思
public class BookAddAction extends Action{
public ActionForward execute(ActionMapping mapping,ActionForm form,
HttpServletRequest request,HttpServletResponse response)
throws Exception {
BookService service = new BookServiceImpl();
service.addBook((BookAddForm)form,request);
return mapping.findForward("main");
}
}帮忙给解释下上面的含义
execute是啥意思public class BookAddAction extends Action{ public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response)throws Exception {BookService service = new BookServiceImpl();ser
execute 是方法名
public class BookAddAction extends Action{ //类bookaction 从 action继承
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)//一个公共方法execute,返回类型为ActionForwar,包括了四个参数
throws Exception {//抛出异常
BookService service = new BookServiceImpl();//创建BOOKSERVICE 类型的对象引用
service.addBook((BookAddForm)form, request);//调用addbook方法,将其中的一个参数强制转换为bookaddform类型
return mapping.findForward("main");
}
}