loginchkservlet.java

孙鑫的Java Web开发详解一书的源代码

package org.sunxin.lesson.jsp.ch09;

import javax.servlet.*;
import java.io.*;
import javax.servlet.http.*;

public class LoginChkServlet extends HttpServlet
{
    public void doGet(HttpServletRequest req, HttpServletResponse resp)
               throws ServletException,IOException
    {
        req.setCharacterEncoding("gb2312");
        String name=req.getParameter("user");
        String pwd=req.getParameter("password");
            
        if(null==name || null==pwd || name.equals("") || pwd.equals(""))
        {
            resp.sendRedirect(resp.encodeRedirectURL("login"));
            return;
        }
        else
        {
            HttpSession session=req.getSession();
            session.setAttribute("user",name);
            resp.sendRedirect(resp.encodeRedirectURL("greet"));
            return;
        }
    }
    
    public void doPost(HttpServletRequest req, HttpServletResponse resp)
               throws ServletException,IOException
    {
        doGet(req,resp);
    }
}