JavaWeb——action

1.表单提交路径

<form action="manager/bookServlet" method="get">

2.表单提交内容的行为属性
<input type="hidden" name="action" value="add" />

resp.sendRedirect(req.getContextPath() + "/manager/bookServlet?action=list");

<a href="manager/bookServlet?action=getBook&id=${book.id}">修改</a>