JSP實現下拉框的內容顯示的是數據庫中的數據

   <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page import="javabean.book"%> <%@ page import="java.util.*" %> <%@ page import="java.sql.*" %> <%@ pag

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