我一直有空指針錯(cuò)誤?我找不到原因了..應(yīng)該是SERVLET那邊錯(cuò)了.
package servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.po.Users;
/**
?* Servlet implementation class loginServlet
?*/
public class loginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
? ? ? ?
? ? /**
? ? ?* @see HttpServlet#HttpServlet()
? ? ?*/
? ? public loginServlet() {
? ? ? ? super();
? ? ? ? // TODO Auto-generated constructor stub
? ? }
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(request,response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
Users u=new Users();
String username=request.getParameter("usernmae");
String password=request.getParameter("password");
u.setUsername(username);
u.setPassword(password);?
request.getSession().setAttribute("loginUser", u);
if(u.getUsername().equals("admin")&&u.getPassword().equals("admin")){
response.sendRedirect(request.getContextPath() + "/login_success.jsp");
}else {
response.sendRedirect(request.getContextPath() + "/login_falure.jsp");
}
}
}
2019-07-31
你的username拼錯(cuò)了,在這一行String username=request.getParameter("usernmae");