<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>
