基于web的图书管理系统设计与实现（可作为 毕业设计、课程设计 附演示地址）

/**

• @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);

request.setCharacterEncoding(“UTF-8”);

response.setContentType(“text/html;charset=UTF-8”);

//因为在管理员界面和读者界面都有查找功能，为了将查找的结果返回正确的页面，设置了tip，tip=1表示管理员界面

int tip = Integer.parseInt(request.getParameter(“tip”));

String name = request.getParameter(“name”);

BookDao bookdao = new BookDao();

ArrayList data = bookdao.getLikeList(name);

//将获取的结果存入请求中

request.setAttribute(“data”, data);

String url = “”;

//转发不同的界面

if (tip == 1) {

url = response.encodeURL(“/books/admin/admin_books.jsp”);

} else {

url = response.encodeURL(“/books/user/select.jsp”);

}

//将请求转发

request.getRequestDispatcher(url).forward(request, response);

}

}

5.2 用户端–借阅信息模块

当普通用户借阅完图书，会在该模块自动生成借阅信息，如借阅日期，归还日期，也可在该模块进行还书，如下图所示。

其中，还书功能的Servlet代码如下：

package com.cya.controller;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.