📄 landingservlet.java

📁 jiava中简单的基础的jsp增删改查适合处学者
💻 JAVA
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/* * To change this template, choose Tools | Templates * and open the template in the editor. */package servlet;import java.io.*;import java.net.*;import java.sql.*;import db.DBConnetion;import javax.servlet.*;import javax.servlet.http.*;/** * * @author Administrator */public class landingServlet extends HttpServlet {       /**     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.    * @param request servlet request    * @param response servlet response    */    protected void processRequest(HttpServletRequest request, HttpServletResponse response)    throws ServletException, IOException {        response.setContentType("text/html;charset=UTF-8");        PrintWriter out = response.getWriter();        try {            String name = request.getParameter("name");            String pwd = request.getParameter("pwd");                        if(name.equals("") || pwd.equals("")){                out.println("请输入用户名或者密码!~~~~~~~");                out.println("<a href='index.jsp'>返回</a>");            }else{                db.DBConnetion conn = new DBConnetion();                String sql ="select  * from UserInfo where name='"+name+"' and pwd='"+pwd+"'";                conn.selectQeary(sql);                response.sendRedirect("resultShow.jsp");            }                        /* TODO output your page here            out.println("<html>");            out.println("<head>");            out.println("<title>Servlet landingServlet</title>");              out.println("</head>");            out.println("<body>");            out.println("<h1>Servlet landingServlet at " + request.getContextPath () + "</h1>");            out.println("</body>");            out.println("</html>");            */        } finally {             out.close();        }    }     // <editor-fold defaultstate="collapsed" desc="HttpServlet 方法。单击左侧的 + 号以编缉代码。">    /**     * Handles the HTTP <code>GET</code> method.    * @param request servlet request    * @param response servlet response    */    protected void doGet(HttpServletRequest request, HttpServletResponse response)    throws ServletException, IOException {        processRequest(request, response);    }     /**     * Handles the HTTP <code>POST</code> method.    * @param request servlet request    * @param response servlet response    */    protected void doPost(HttpServletRequest request, HttpServletResponse response)    throws ServletException, IOException {        processRequest(request, response);    }    /**     * Returns a short description of the servlet.    */    public String getServletInfo() {        return "Short description";    }    // </editor-fold>}
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