基于web的图书管理系统设计与实现 (3)

    管理员可以通过根据图书号 、图书名称，作者名称，出版社等查询图书信息。

    管理员登录系统以后，可以进行图书添加操作，这是管理员主要的输入信息部分，填写好各项信息后，单击保存按钮，系统将对这些信息进行处理。界面见下图所示：

    除此以外，管理员对已经添加好的图书信息有修改权限。

其中，添加图书功能的代码如下：

package com.cya.controller; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.cya.dao.BookDao; /** * Servlet implementation class AddBookServlet */ @WebServlet("/AddBookServlet") public class AddBookServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public AddBookServlet() { super(); // TODO Auto-generated constructor stub } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub // response.getWriter().append("Served at: ").append(request.getContextPath()); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub // doGet(request, response); //设置编码类型 request.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); //获取要添加图书的信息 String card = request.getParameter("card"); String name = request.getParameter("name"); String type = request.getParameter("type"); String autho = request.getParameter("autho"); String press = request.getParameter("press"); int num = Integer.parseInt(request.getParameter("num")); BookDao bookdao = new BookDao(); //调用函数，存入图书 bookdao.addBook(card, name, type, autho, press, num); response.sendRedirect("/manage_books/books/admin/admin_books.jsp"); } } 5.4 管理员端--图书分类模块