package?Servlet;
import?java.io.IOException;
import?java.io.PrintWriter;
import?java.sql.SQLException;
import?javax.servlet.ServletException;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?javax.swing.JOptionPane;
import?Bean.login;
import?Dao.loginDao;
public?class?loginServlet?extends?HttpServlet?{
/**
?*?
?*/
private?static?final?long?serialVersionUID?=?1L;
/**
?*?Constructor?of?the?object.
?*/
public?loginServlet()?{
super();
}
/**
?*?Destruction?of?the?servlet.?<br>
?*/
public?void?destroy()?{
super.destroy();?//?Just?puts?"destroy"?string?in?log
//?Put?your?code?here
}
public?void?init()?throws?ServletException?{
//?Put?your?code?here
}
public?void?doGet(HttpServletRequest?request,?HttpServletResponse?response)
throws?ServletException,?IOException?{
return;
}
public?void?doPost(HttpServletRequest?request,?HttpServletResponse?response)
throws?ServletException,?IOException?{
String?user?=?request.getParameter("user");
String?password?=?request.getParameter("password");
????????System.out.println(user);
response.setContentType("text/html");
PrintWriter?out?=?response.getWriter();
try{
//login?lg?=?new?Bean.login();
System.out.println("ls2");
login?lg?=?new?loginDao().login(user);
System.out.println(lg);
String?lgu?=?lg.getUser();
String?lgp?=?lg.getPassword();
System.out.println(lgu);
System.out.println(lgp);
if(lgu?!=?null?){
System.out.println("ls3");
if(lgp.equals(password)){
out.print(user);
out.print(password);
request.getRequestDispatcher("/index.jsp").forward(request,response);
}else{
request.getRequestDispatcher("/login.jsp").forward(request,?response);
}
}else{
System.out.println("ls4");
out.print("ok");
JOptionPane.showMessageDialog(null,?"用戶名不存在！");
request.getRequestDispatcher("/login.jsp").forward(request,?response);
}
}catch(SQLException?e){
e.printStackTrace();
}
}
/**
?*?Initialization?of?the?servlet.?<br>
?*?@throws?IOException?
?*
?*?@throws?ServletException?if?an?error?occurs
?*/
/*(public?static?void?main(String[]?args)?{
loginServlet?lse?=?new?loginServlet();
?
try?{
lse.doPost(null,?null);
}?catch?(ServletException?e)?{
//?TODO?Auto-generated?catch?block
e.printStackTrace();
}?catch?(IOException?e)?{
//?TODO?Auto-generated?catch?block
e.printStackTrace();
}
System.out.println("2");
}
*/
}
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