登录
package com.ingin.web;
import com.ingin.pojo.User;
import com.ingin.service.LoginService;
import org.apache.commons.beanutils.BeanUtils;
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 javax.servlet.http.HttpSession;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
@WebServlet(urlPatterns = {"/loginServlet"})
public class LoginServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String checkCode = request.getParameter("checkCode");
HttpSession session = request.getSession();
String checkCode_session = (String) session.getAttribute("checkCode_session");
//防止浏览器后退一步继续登陆成功
session.removeAttribute("checkCode_session");
if (checkCode != null && checkCode.equalsIgnoreCase(checkCode_session)) {
User user = new User();
try {
BeanUtils.populate(user, request.getParameterMap());
System.out.println(user);
LoginService loginService = new LoginService();
User user1 = loginService.serviceLogin(user);
System.out.println(user1);
if (user1 != null) {
session.setAttribute("username", user1.getNickname());
response.sendRedirect(request.getContextPath() + "/welcome.jsp");
} else{
request.setAttribute("errorMsg", "用户名密码错误");
request.getRequestDispatcher("/index.jsp").forward(request, response);
}
} catch (Exception e) {
e.printStackTrace();
}
} else {
request.setAttribute("errorMsg", "验证码错误");
request.getRequestDispatcher("/index.jsp").forward(request, response);
}
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
}