📄 loginservlet.java~4~

📁 模仿Taobao购物网

💻 JAVA~4~

字号:

package taobaoproject;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.sql.*;

public class LoginServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        String userid = request.getParameter("userid");
        if (userid == null) {
            userid = "";
        }
        String password = request.getParameter("password");
        if (password == null) {
            password = "";
        }
        response.setContentType(CONTENT_TYPE);
        DB_Bean dbBean = new DB_Bean();
        java.sql.Connection conn = dbBean.getConn();
        try {
            java.sql.PreparedStatement past = conn.prepareStatement("select * from tb_Member where Name = ? and Psaaword = ?");
            past.setString(1,userid);
            past.setString(2,password);
            java.sql.ResultSet rst = past.executeQuery();
            if(!rst.next()) {
                String errmsg = "error1";
                response.sendRedirect("login.jsp?errmsg=" + errmsg);
            }
        } catch (SQLException ex) {
        }
        /*PrintWriter out = response.getWriter();
        out.println("<html>");
        out.println("<head><title>Servlet1</title></head>");
        out.println("<body bgcolor=\"#ffffff\">");
        out.println("<p>The servlet has received a " + request.getMethod() +
                    ". This is the reply.</p>");
        out.println("</body>");
        out.println("</html>");
        out.close();*/
    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        doGet(request, response);
    }

    //Clean up resources
    public void destroy() {
    }
}

⌨️ 快捷键说明

复制代码 Ctrl + C

搜索代码 Ctrl + F

全屏模式 F11

切换主题 Ctrl + Shift + D

显示快捷键 ?

增大字号 Ctrl + =

减小字号 Ctrl + -