📄 bookstoreservlet.java
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package servlets;import java.io.*;import javax.servlet.*;import javax.servlet.http.*;import database.*;/** * An HTTP Servlet that overrides the service method to return a * simple web page. */public class BookStoreServlet extends HttpServlet { private BookDBAO bookDB; /* * 从ServletContext中取出BookDBAO对象 */ public void init() throws ServletException { bookDB = (BookDBAO) getServletContext() .getAttribute("bookDB"); if (bookDB == null) { throw new UnavailableException("Couldn't get database."); } } public void destroy() { bookDB = null; } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 设置 content-type response.setContentType("text/html;charset=gb2312"); response.setBufferSize(8192); PrintWriter out = response.getWriter(); // 把数据写入输出流 out.println("<html>" + "<head><title>BookStore</title></head>"); // 取得dispatcher对象，将页首放在本页面 RequestDispatcher dispatcher = getServletContext() .getRequestDispatcher("/head"); if (dispatcher != null) { dispatcher.include(request, response); } out.println("<p align=center><a href=\"" + response.encodeURL(request.getContextPath() + "/bookcatalog") + "\"><b>开始购物</b></a></font><br>" + "<br> " + "<br> " + "<br> " + "</body>" + "</html>"); out.close(); } public String getServletInfo() { return "The BookStore servlet returns the main web page ."; }}⌨️ 快捷键说明
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