版权声明：沉迷代码，难以自拔 https://blog.csdn.net/qq_33846054/article/details/68506726
<body>
<center>
<img alt="myimg" src="fruit3.jpg"></img>
<form method="post" action="servlet/first">
<table>
<tr>
<td>用户名：</td>
<td><input type="text" name="username"></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password" name="password"></td>
</tr>
<tr>
<td><input type="submit" value="提交" name="submit"></td>
</tr>
</table>
</form>
</center>
</body>
<body>
<center>
<h1>恭喜你登录成功！</h1>
<jsp:useBean id="userbean" class="entity.users" scope="session"></jsp:useBean>
<form method="post" >
<table>
<tr>
<td>用户名：</td>
<td><jsp:getProperty name="userbean" property="username"></jsp:getProperty></td>
</tr>
<tr>
<td>密码：</td>
<td><jsp:getProperty name="userbean" property="password"></jsp:getProperty></td>
</tr>
<tr>
<td></td>
</tr>
</table>
</form>
</center>
</body>
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=GBK");
PrintWriter out=response.getWriter();
users u =new users();
String name="";
String password="";
name=request.getParameter("username");
password=request.getParameter("password");
u.setUsername(name);
u.setPassword(password);
request.getSession().setAttribute("userbean", u);//session也可以添加对象
//request.getRequestDispatcher("../success.jsp").forward(request, response);
try{
RequestDispatcher rDispatcher=request.getRequestDispatcher("../success.jsp");
rDispatcher.forward(request, response);
out.println("终于他妈没有异常了");
}
catch(Exception ex){
out.println("出现异常！");
ex.printStackTrace();
}
}