📄 login.java
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package ch10;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class login extends HttpServlet{
private static final String CONTENT_TYPE ="text/html; charset = GBK";
public void init()throws ServletException{
}
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException{
response.setContentType(CONTENT_TYPE);
String username = request.getParameter("username");
String userpass = request.getParameter("userpass");
username = new String(username.getBytes("8859_1"));
PrintWriter out = response.getWriter();
if(username.equals(userpass)&&username.length()!=0)
{
out.println("<html>");
out.println("<head><title>登陆</title></head>");
out.println("<body bgcolor = \"#ffffff\">");
out.println("<p>登陆成功</p>");
out.println("</body></html>");
HttpSession session = request.getSession(true);
session.setAttribute("user",username);
}
else
{
response.sendRedirect("login.jsp");
}
}
public void doPost(HttpServletRequest request,HttpServletResponse response)
throws ServletException,IOException
{
doGet(request,response);
}
public void destroy(){
}
}
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