第十一周--邮件系统补充一个注册一个登陆验证码

  <body>
         <form action="dozhuce.jsp" method="post">
                账号:<input type="text" name="uuu"> <br> <br>
                密码: <input type="text" name="ppp">    <br>  <br>
            <input type="submit" value="注册">
            </form>
              <a href="login.jsp">已有账号，直接登录</a>
            

  </body>

<body>
          <%
          request.setCharacterEncoding("utf-8");
             String uuu=request.getParameter("uuu");
             String ppp=request.getParameter("ppp");
             
             Us u=new Us();
             u.setZzhh(uuu);
             u.setMima(ppp);
             UsDao d=new UsDao();
             d.insert(u);
             
             
             request.getRequestDispatcher("login.jsp").forward(request, response);
             
             
          
          
           %>
     
    
  </body>

<body>
   <form action="dologin.jsp" method="post">
            账号:<input type="text" name="username"> <br> <br>
            密码: <input type="text" name="password">    <br>  <br>
          验证码: <input type="password" name="yzm" size="6"><br>  <br>
            
            <%
               int yzm1=(int)(   ((Math.random())*11)  -1  );
               int yzm2=(int)(   ((Math.random())*11)  -1  );
               int yzm3=(int)(   ((Math.random())*11)  -1  );
               int yzm4=(int)(   ((Math.random())*11)  -1  );
               String yzmsum=yzm1+""+yzm2+yzm3+yzm4;
             %>
               <input type="hidden" name="mj" value="<%=yzmsum%>">
           <img src="images/<%=yzm1%>.gif">
           <img src="images/<%=yzm2%>.gif">
           <img src="images/<%=yzm3%>.gif">
           <img src="images/<%=yzm4%>.gif">
             <br>  <br>
            
            <input type="submit" value="登录">
    </form>
  </body>

<body>
           <%
             String yzm=request.getParameter("yzm");
             String yzm1=request.getParameter("mj");
             String username=request.getParameter("username");
              session.setAttribute("username", username);
              String password=request.getParameter("password");
              UsDao d=new UsDao();
              
             if( d.getLogin(username, password)&&yzm.equals(yzm1) ){
                request.getRequestDispatcher("main.jsp").forward(request, response);
              }else{
              response.sendRedirect("login.jsp");
              }
            %>
            
  </body>