?? userlogin.java
字號:
package bookshop.bean;
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import bookshop.bean.*;
public class UserLogin extends HttpServlet{
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
HttpSession session=request.getSession();
String toJSP="/main.jsp";
if(session.getAttribute("username")==null){
String name=request.getParameter("name");
String pass=request.getParameter("pass");
String sql="select * from b_user where b_name='"+name+"' and b_pass='"+pass+"'";
DataBase db=new DataBase();
ResultSet rs=db.executeQuery(sql);
try{
if(rs.next()){
session.setAttribute("username",name);
toJSP="/main.jsp/";
}else
{
toJSP="/login.jsp/";
request.setAttribute("errinf","bu");
}
}catch(Exception e){
System.out.println(e.getMessage());
}
db.closeConnection();
}
RequestDispatcher dispatcher=request.getRequestDispatcher(toJSP);
dispatcher.forward(request,response);
}
public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException
{
doGet(request,response);
}
}
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