📄 userloginservlet.java
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package Control_UserLogin;
import Model_UserLogin.UserLogin;
import Model_UserLogin.UserLoginBean;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.PrintWriter;
import java.io.IOException;
public class UserLoginServlet extends HttpServlet
{
private static final String CONTENT_TYPE = "text/html; charset=GBK";
public void init(ServletConfig config) throws ServletException
{
super.init(config);
}
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>UserLoginServlet</title></head>");
out.println("<body>");
out.println("<p>The servlet has received a GET. This is the reply.</p>");
out.println("</body></html>");
out.close();
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
UserLogin ul=new UserLogin();
UserLoginBean ulb=new UserLoginBean();
ul.setLoginID(request.getParameter("LoginID"));
ul.setPwd(request.getParameter("Pwd"));
String Loginid=ulb.FinduserLogin(ul);
if (Loginid.equals("用户不存在"))
{
response.sendRedirect("LoginFalse.jsp");
}
else
{
HttpSession hs=request.getSession(true);
hs.setAttribute("Login",ul.getLoginID());
response.sendRedirect("Logined.jsp?Loginid="+ul.getLoginID());
}
out.close();
}
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