Question

注册后，用户将看到此表单，其中注册表单中的所有详细信息都被捕获到数据库中

<html>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
            <title>JSP Page</title>
        </head>
        <body>
            <h3>Email confirmation has been sent to your email address</h3>
            <a href="http://localhost:6060/JSP_RegistrationAndLoginForm/LoginForm.jsp">click here to login</a>
        </body>
    </html>

登录表格：

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <body>
        <h3>Login Form</h3>
        <form name="myForm" method="POST" action="ValidateLoginServlet2.do" onSubmit="return validateLogin()">
            User name: <input type="text" name="uname"/> 
            Password: <input type="password" name="pwd"/>
            <input type="Submit" name="submit" value="Submit" />
        </form>
    </body>
</html>

登录验证servlet：

public class ValidateLoginServlet2 extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
//        processRequest(request, response);
        PrintWriter out = response.getWriter();

        String username = request.getParameter("uname");
        String password = request.getParameter("pwd");

        try
        {
            Connection con = OracleDBConnection.getConnection();
            PreparedStatement statement = con.prepareStatement("select username, password from registration where username =? and password=?");
            statement.setString(1, username);
            statement.setString(2, password);
            ResultSet result = statement.executeQuery();
            if(result.next())
            {
                response.sendRedirect("LoginSuccessful.jsp");
            }
            else
            {
                out.println("username and password are incorrect");
            }
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }   
    }

从登录表单提交用户名和密码java.sql.SQLException: ORA-00904: "PASSWORD": invalid identifier

后，我收到了与数据库相关的错误

Answer 1

替换这两行

statement.setString(13, username);
statement.setString(14, password);

与

statement.setString(1, username);
statement.setString(2, password);

无法在jsp登录表单

1 个答案: