第九次jsp 

<body>
    <script type="text/javascript">
        function yz() {
            if (form1.userName.value == "") {
                alert("用户名不能为空");
                form1.userName.focus();
                return form1();
            }
            if (form1.userPassword.value == "") {
                alert("密码不能为空");
                form1.userPassword.focus();
                return form1();
            }
            form1.registerid();
        }
    </script>
    <form action="register" method="post" name="form1">
        <table>
            <tr>
                <td>用户名：</td>
                <td><input type="text" name="userName" id="userName"
                    placeholder="请输入用户名"></td>
            </tr>
            <tr>
                <td>密码：</td>
                <td><input type="password" name="userPassword"
                    id="userPassword" placeholder="请输入密码"></td>
            </tr>
            <tr>
                <td><br></td>
            </tr>
            <tr>
                <td><input type="submit" name="registerid" value="注册"
                    onClick="yz()"></td>
            </tr>
        </table>
    </form>
</body>
index.jsp
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        response.setCharacterEncoding("utf-8");
        PrintWriter out = response.getWriter();
        String userName = request.getParameter("userName");
        String userPassword = request.getParameter("userPassword");
        if (userName=="" || userPassword=="") {
            System.out.println("注册失败");
            response.sendRedirect("index.jsp");
        }else{
            System.out.println("注册成功");
            System.out.println("用户名：" + userName + "密码：" + userPassword);
            request.getRequestDispatcher("login.jsp").forward(request, response);
        }
        out.flush();
        out.close();
    }
register.java

 

 

 

posted on 2020-05-30 14:11  福来了  阅读(153)  评论(0)    收藏  举报