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  • JSP第十次作业

    package com.gd.servlet;
    
    import java.io.IOException;
    import java.io.PrintWriter;
    
    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.gd.dao.UsersDao;
    import com.gd.entity.Users;
    @WebServlet("/FirstServlet")
    public class FirstServlet extends HttpServlet {
    
        /**
         * Constructor of the object.
         */
        public FirstServlet() {
            super();
        }
    
        /**
         * Destruction of the servlet. <br>
         */
        public void destroy() {
            super.destroy(); // Just puts "destroy" string in log
            // Put your code here
        }
    
        /**
         * The doGet method of the servlet. <br>
         *
         * This method is called when a form has its tag value method equals to get.
         * 
         * @param request the request send by the client to the server
         * @param response the response send by the server to the client
         * @throws ServletException if an error occurred
         * @throws IOException if an error occurred
         */
        public void doGet(HttpServletRequest request, HttpServletResponse response)
                throws ServletException, IOException {
    
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">");
            out.println("<HTML>");
            out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
            out.println("  <BODY>");
            out.print("    This is ");
            out.print(this.getClass());
            out.println(", using the GET method");
            out.println("  </BODY>");
            out.println("</HTML>");
            out.flush();
            out.close();
        }
    
        /**
         * The doPost method of the servlet. <br>
         *
         * This method is called when a form has its tag value method equals to post.
         * 
         * @param request the request send by the client to the server
         * @param response the response send by the server to the client
         * @throws ServletException if an error occurred
         * @throws IOException if an error occurred
         */
        public void doPost(HttpServletRequest request, HttpServletResponse response)
                throws ServletException, IOException {
    
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            Users a=new Users();
            String uname = request.getParameter("uname");
            String upwd = request.getParameter("upwd");
            String email = request.getParameter("uemail");
    
            a.setUsername(uname);
            a.setPassword(upwd);
            a.setEmail(email);
    
            UsersDao as=new UsersDao();
            as.addUsers(a);
            request.getRequestDispatcher("index.jsp").forward(request, response);
            out.flush();
            out.close();
        }
    
        /**
         * Initialization of the servlet. <br>
         *
         * @throws ServletException if an error occurs
         */
        public void init() throws ServletException {
            // Put your code here
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/shenxiaoqi/p/12970915.html
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