2022年欢迎来到Jsp编程第三课时——综合案例（二）

package com.DengLu.And.Zhu.Ce;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Random;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * Servlet implementation class ServlectDengLuLose
 */
@WebServlet("/ZhuCeLose")
public class ZhuCeLose extends HttpServlet {
  private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ZhuCeLose() {
        super();
        // TODO Auto-generated constructor stub
    }
  /**
   * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
   */
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setCharacterEncoding("UTF-8");
    response.setContentType("text/html");
    response.setHeader("refresh", "5");
    //设置要求浏览器 
    /* response.sendRedirect("Servlet1"); */
    int i=(int)(Math.random()*900000+100000);
    int a=(int)(Math.random()*9000+1000);
    int c=(int)(Math.random()*900+100);
    System.out.println("@@@@"+(new Random().nextInt(900000)+100000));
    /*
     * 设置随机
     */
    System.out.println(new Random().nextInt(100));
    System.out.println(Math.random());
    PrintWriter  pw =response.getWriter();
    pw.print("你的支付宝到账1000万元，需要的码号为:<h1 style='color:red ;background-color:green'>"+i+"</h1>,打死也不说  \"<hr>\";");
    pw.print("你的QQ到账1000万元，需要的码号为:<h2 style='color:red ;background-color:green'>"+c+"</h2>,打死也不说   \"<hr>\";");
    pw.print("你的微信到账1000万元，需要的码号为:<span style='color:green'>"+a+"</span>,打死也不说"); 
    pw.print("你的手机支付宝到账1000万<span style='color :red'>"+i+"</span>");
    pw.append("<style>");
    pw.append(" *{\r\n" + 
        "            margin: 0px;\r\n" + 
        "            padding: 0px;\r\n" + 
        "            background: white;\r\n" + 
        "            font-size: 30px;\r\n" + 
        "            font-weight: bold;\r\n" + 
        "            text-shadow: 1px 1px 1px red;\r\n" + 
        "\r\n" + 
        "        }");
    pw.append("</style>");
    pw.append("<h1 align ='center'>2021你年垮2022年QQ登陆失败的界面</h1>");
    pw.append("注册界面失败请重新注册");
    response.setHeader("refresh","5;URL=Register.jsp");
    pw.append("<h2 align ='center'><a href='RegisterServlect'>点击这里返回注册界面进行重新注册</a></h2>");
    pw.append("如果用户一分钟后没有任何操作则在60秒后调到index.jsp文件");
    response.setHeader("refresh","30;URL=index.jsp");
  }
  /**
   * @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);
  }
}

package com.Filter;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class MyFilter4 implements Filter{
  public MyFilter4() {
    // TODO Auto-generated constructor
    System.out.println("我创建了第一个MyFilter过滤器");
  }
  @Override
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
      response.setContentType("text/html");
      response.setCharacterEncoding("UTF-8"); 
      System.out.println("我是myfilter开始拦截请求地址哦哦");
  }
  @Override
  public void init(FilterConfig config) throws ServletException {
    // TODO Auto-generated method stub
    System.out.println("FilterConfig用来加载初始化数据");
  }
  @Override
  public void destroy() {
    System.out.println("Filter所有方法运行完毕后销毁过滤器");
  }
}

package com.Servlect;
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;
/**
 * Servlet implementation class HomeServlect2
 */
@WebServlet("/HomeServlect2")
public class HomeServlect2 extends HttpServlet {
  private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#HttpServlet()
     */
    public HomeServlect2() {
        super();
        // TODO Auto-generated constructor stub
    }
  /**
   * @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());
    response.setContentType("text/html");
    response.setCharacterEncoding("UTF-8");
    PrintWriter pw =response.getWriter();
    pw.append("<h1 style='color:red'>登录成功</h1>");
    pw.append("<h2>本案例运用的对象\r\n" + 
        "<hr>\r\n" + 
        "ServletConfig：对象获得静态数据\r\n" + 
        "<hr>\r\n" + 
        "ServletContext对象：获取共享静态数据，获取共享动态数据，获取共享文件数据.\r\n" + 
        "<hr>\r\n" + 
        "HttpServletResponse 对象HttpServlet调用HttpResponse的有关方法，生成响应数据\r\n" + 
        "<hr>\r\n" + 
        "HttpServletRequest对象：HttpServlet调用HttpResponse的有关方法，生成响应数据,用于服务器上接收浏览器发送过来的数据信息\r\n" + 
        "<hr>\r\n" + 
        "Cookie对象,对象Session对象。程序把每个用户的数据以Cookie/Session的形式写给用户各自的浏览器。\r\n" + 
        "<hr>\r\n" + 
        "Filter:过滤器，阻止非法网站的访问。\r\n" + 
        "<hr>\r\n" + 
        "Listener:\r\n" + 
        "实现了特定接口的类为监听器，用来监听另一个Java类的方法调用或者属性改变；** 当被监听的对象发生了方法调用或者属性改变后，\r\n" + 
        "监听器的对应方法就会立即执行.\r\n" + 
        "<hr>\r\n" + 
        "九大内置对象的核心表格\r\n" + 
        "<hr>\r\n" + 
        "out         JspWriter    将文本信息输出浏览器\r\n" + 
        "<hr>\r\n" + 
        "request  HttpServletRequest   获得浏览器发送来的数据\r\n" + 
        "<hr>\r\n" + 
        "respone   HttpServletRequest   回复浏览器请求\r\n" + 
        "<hr>\r\n" + 
        "seesion  HttpSeesion           在不换浏览器放信息\r\n" + 
        "<hr>    \r\n" + 
        "exception  Throwable    异常报错\r\n" + 
        "<hr>\r\n" + 
        "page Servlect(this)    jsp翻译出来类的对象\r\n" + 
        "<hr>\r\n" + 
        "config     ServlectConfig            静态数据\r\n" + 
        "<hr>\r\n" + 
        "application  ServlectContext    共享数据\r\n" + 
        "<hr>\r\n" + 
        "pageContext   PageContextjsp       管理者引出对象\r\n" + 
        "<hr>\r\n" + 
        "seesion   浏览器不切\r\n" + 
        "application  服务器不关闭\r\n" + 
        "request：请求转发跳转页面的情况，只能两个页面共享数据\r\n" + 
        "pageContext：该对象中只能页面自己用\r\n" + 
        "才能用setAttribute的方法\r\n" + 
        "将四作用域排序\r\n" + 
        "pageContext request seesion application \r\n" + 
        "</h2>");
    pw.append("<h1><a href='index.jsp'>返回主界面</a></h1>");
  }
  /**
   * @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);
  }
}

package com.Servlect;
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;
/**
 * Servlet implementation class HomeServlect2
 */
@WebServlet("/HomeServlect2")
public class HomeServlect2 extends HttpServlet {
  private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#HttpServlet()
     */
    public HomeServlect2() {
        super();
        // TODO Auto-generated constructor stub
    }
  /**
   * @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());
    response.setContentType("text/html");
    response.setCharacterEncoding("UTF-8");
    PrintWriter pw =response.getWriter();
    pw.append("<h1 style='color:red'>登录成功</h1>");
    pw.append("<h2>本案例运用的对象\r\n" + 
        "<hr>\r\n" + 
        "ServletConfig：对象获得静态数据\r\n" + 
        "<hr>\r\n" + 
        "ServletContext对象：获取共享静态数据，获取共享动态数据，获取共享文件数据.\r\n" + 
        "<hr>\r\n" + 
        "HttpServletResponse 对象HttpServlet调用HttpResponse的有关方法，生成响应数据\r\n" + 
        "<hr>\r\n" + 
        "HttpServletRequest对象：HttpServlet调用HttpResponse的有关方法，生成响应数据,用于服务器上接收浏览器发送过来的数据信息\r\n" + 
        "<hr>\r\n" + 
        "Cookie对象,对象Session对象。程序把每个用户的数据以Cookie/Session的形式写给用户各自的浏览器。\r\n" + 
        "<hr>\r\n" + 
        "Filter:过滤器，阻止非法网站的访问。\r\n" + 
        "<hr>\r\n" + 
        "Listener:\r\n" + 
        "实现了特定接口的类为监听器，用来监听另一个Java类的方法调用或者属性改变；** 当被监听的对象发生了方法调用或者属性改变后，\r\n" + 
        "监听器的对应方法就会立即执行.\r\n" + 
        "<hr>\r\n" + 
        "九大内置对象的核心表格\r\n" + 
        "<hr>\r\n" + 
        "out         JspWriter    将文本信息输出浏览器\r\n" + 
        "<hr>\r\n" + 
        "request  HttpServletRequest   获得浏览器发送来的数据\r\n" + 
        "<hr>\r\n" + 
        "respone   HttpServletRequest   回复浏览器请求\r\n" + 
        "<hr>\r\n" + 
        "seesion  HttpSeesion           在不换浏览器放信息\r\n" + 
        "<hr>    \r\n" + 
        "exception  Throwable    异常报错\r\n" + 
        "<hr>\r\n" + 
        "page Servlect(this)    jsp翻译出来类的对象\r\n" + 
        "<hr>\r\n" + 
        "config     ServlectConfig            静态数据\r\n" + 
        "<hr>\r\n" + 
        "application  ServlectContext    共享数据\r\n" + 
        "<hr>\r\n" + 
        "pageContext   PageContextjsp       管理者引出对象\r\n" + 
        "<hr>\r\n" + 
        "seesion   浏览器不切\r\n" + 
        "application  服务器不关闭\r\n" + 
        "request：请求转发跳转页面的情况，只能两个页面共享数据\r\n" + 
        "pageContext：该对象中只能页面自己用\r\n" + 
        "才能用setAttribute的方法\r\n" + 
        "将四作用域排序\r\n" + 
        "pageContext request seesion application \r\n" + 
        "</h2>");
    pw.append("<h1><a href='index.jsp'>返回主界面</a></h1>");
  }
  /**
   * @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);
  }
}

package com.Servlect;
/**
 * A202020895
 * 10/29
 * 
 */
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.Random;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * Servlet implementation class Servlet1
 */
@WebServlet("/Servlet1")
public class servlect1 extends HttpServlet {
  private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#HttpServlet()
     */
    public servlect1() {
        super();
        System.out.println("servlect在运行中使用cookie访问");
        // TODO Auto-generated constructor stub
    }
    @Override
    public void init() throws ServletException {
      // TODO Auto-generated method stub
      super.init();
      System.out.println("servlectinit方法");
    }
  /**
   * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
   */
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setContentType("text/html");
    response.setCharacterEncoding("UTF-8");
    /* response.sendRedirect("Servlet1"); */
    int i=(int)(Math.random()*900000+100000);
    int a=(int)(Math.random()*9000+1000);
    int c=(int)(Math.random()*900+100);
    System.out.println("@@@@"+(new Random().nextInt(900000)+100000));
    /*
     * 设置随机
     */
    System.out.println(new Random().nextInt(100));
    System.out.println(Math.random());
    PrintWriter  pw =response.getWriter();
    pw.print("你的支付宝到账1000万元，需要的码号为:<h1 style='color:red ;background-color:green'>"+i+"</h1>,打死也不说  \"<hr>\";");
    pw.print("你的QQ到账1000万元，需要的码号为:<h2 style='color:red ;background-color:green'>"+c+"</h2>,打死也不说   \"<hr>\";");
    pw.print("你的微信到账1000万元，需要的码号为:<span style='color:green'>"+a+"</span>,打死也不说"); 
    pw.print("你的手机支付宝到账1000万<span style='color :red'>"+i+"</span>");
    //浏览器通过地址访问服务器的servelt
    //servlet要获得该浏览器所携带的所有cookie对象
    Cookie[] cookies=request.getCookies();
    if (cookies!=null) {
      //循环遍历每一个cookie，直到找到servlet能识别的cookie值为止
      //tag,china
      for (int e = 0; e < cookies.length; e++) {
        //通过cookie中存储的数据的名称
        String name=cookies[i].getName();
        if ("AAA".equals(name)) {
          //这个cookie是服务器要找的东西,从cookie中获得中文数据需要进行解码
          String value=URLDecoder.decode(cookies[e].getValue(), "UTF-8");
          System.out.println(value);
          pw.print(value);
          break;  
        }
      }
    }else {
      //没有cookie,说明当前浏览器以前没有访问过服务器
      //创建cookie对象,存储中文数据的时候，需要对数据进行转码
      Cookie cookie=new Cookie("AAA", URLEncoder.encode("bbbbbbbb", "UTF-8"));
      //设置浏览器退出后，cookie还能继续存在内存中的时间
      cookie.setMaxAge(30);
      response.addCookie(cookie);
      pw.print("服务器给浏览器创建了一个cookie对象");
    }
  }
  /**
   * @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);
  }
}

package com.Servlect;
/**
 * A202020895
 * 10/29
 * 
 */
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.Random;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * Servlet implementation class Servlet1
 */
@WebServlet("/Servlet1")
public class servlect1 extends HttpServlet {
  private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#HttpServlet()
     */
    public servlect1() {
        super();
        System.out.println("servlect在运行中使用cookie访问");
        // TODO Auto-generated constructor stub
    }
    @Override
    public void init() throws ServletException {
      // TODO Auto-generated method stub
      super.init();
      System.out.println("servlectinit方法");
    }
  /**
   * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
   */
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.setContentType("text/html");
    response.setCharacterEncoding("UTF-8");
    /* response.sendRedirect("Servlet1"); */
    int i=(int)(Math.random()*900000+100000);
    int a=(int)(Math.random()*9000+1000);
    int c=(int)(Math.random()*900+100);
    System.out.println("@@@@"+(new Random().nextInt(900000)+100000));
    /*
     * 设置随机
     */
    System.out.println(new Random().nextInt(100));
    System.out.println(Math.random());
    PrintWriter  pw =response.getWriter();
    pw.print("你的支付宝到账1000万元，需要的码号为:<h1 style='color:red ;background-color:green'>"+i+"</h1>,打死也不说  \"<hr>\";");
    pw.print("你的QQ到账1000万元，需要的码号为:<h2 style='color:red ;background-color:green'>"+c+"</h2>,打死也不说   \"<hr>\";");
    pw.print("你的微信到账1000万元，需要的码号为:<span style='color:green'>"+a+"</span>,打死也不说"); 
    pw.print("你的手机支付宝到账1000万<span style='color :red'>"+i+"</span>");
    //浏览器通过地址访问服务器的servelt
    //servlet要获得该浏览器所携带的所有cookie对象
    Cookie[] cookies=request.getCookies();
    if (cookies!=null) {
      //循环遍历每一个cookie，直到找到servlet能识别的cookie值为止
      //tag,china
      for (int e = 0; e < cookies.length; e++) {
        //通过cookie中存储的数据的名称
        String name=cookies[i].getName();
        if ("AAA".equals(name)) {
          //这个cookie是服务器要找的东西,从cookie中获得中文数据需要进行解码
          String value=URLDecoder.decode(cookies[e].getValue(), "UTF-8");
          System.out.println(value);
          pw.print(value);
          break;  
        }
      }
    }else {
      //没有cookie,说明当前浏览器以前没有访问过服务器
      //创建cookie对象,存储中文数据的时候，需要对数据进行转码
      Cookie cookie=new Cookie("AAA", URLEncoder.encode("bbbbbbbb", "UTF-8"));
      //设置浏览器退出后，cookie还能继续存在内存中的时间
      cookie.setMaxAge(30);
      response.addCookie(cookie);
      pw.print("服务器给浏览器创建了一个cookie对象");
    }
  }
  /**
   * @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);
  }
}

package com.Servlect;
/**
 * 这一个类让我们去了解Servlect的周期
 */
import java.io.IOException;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class ServlectOne  implements Servlet{
  public ServlectOne() {
    // TODO Auto-generated constructor stub
    System.out.println("@1 Servlec方法的构造方法");
  }
  @Override
  public void destroy() {
  System.out.println("@2 Servlect方法的销毁");
  }
  @Override
  public ServletConfig getServletConfig() {
    // TODO Auto-generated method stub
    System.out.println("@ 3Servlect方法加载静态数据");
    return null;
  }
  @Override
  public String getServletInfo() {
    // TODO Auto-generated method stub
    System.out.println("@ 4 Servlect的getServletInfo方法");
    return null;
  }
  @Override
  public void init(ServletConfig config) throws ServletException {
    // 获取静态数据的对象
    String a=config.getInitParameter("SFZ");
      System.out.println(a);
    System.out.println("@5 Servlecto的init方法");
    System.out.println("获取静态数据的对象config");
    //动态数据的获取
  }
  @Override
  public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
    // TODO Auto-generated method stub
    System.out.println("@5 Servlecto的servlect方法");
  }
}