传值页面，和传入服务器一样的JSP页面没有区别
<!-- book从Servlet获得--><td> <a rel="external nofollow" href="update.jsp?bookid=${book.bookid}&bookname=${book.bookname }&bookprice=${book.bookprice}&bookimg=${book.bookimg}">修改</a></td>
需要获得值得JSP页面，只需要在以前的ER表达式前面加上 param
<tr><td><input readonly="true" type="text" name="bookid" value="${param.bookid }"></td><td><input type="text" name="bookname" value="${param.bookname}"></td><td><input type="text" name="bookprice" value="${param.bookprice}"></td><td><input type="text" name="bookimg" value="${param.bookimg}"></td><td><input type = "submit" value="修改"></td></tr>