📄 registerfilter.java
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package com.test.filter;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.test.service.UserService;
import com.test.service.impl.UserServiceImpl;
public class RegisterFilter implements Filter {
public void destroy() {
// TODO Auto-generated method stub
}
public void doFilter(ServletRequest arg0, ServletResponse arg1,
FilterChain arg2) throws IOException, ServletException {
// TODO Auto-generated method stub
System.out.println("register filter_1");
HttpServletRequest rq = (HttpServletRequest)arg0;
HttpServletResponse rp = (HttpServletResponse)arg1;
HttpSession session = rq.getSession();
Cookie[] cookies = rq.getCookies();
UserService userService = new UserServiceImpl();
Map<String, String> cookieMap = new HashMap<String, String>();
if(session==null){
arg2.doFilter(arg0, arg1);
}else{
if(session.getAttribute("userBean")!=null){
rp.sendRedirect(rq.getContextPath()+"/index.jsp");
}else{
for(Cookie cookie : cookies){
cookieMap.put(cookie.getName(), cookie.getValue());
}
String userName = cookieMap.get("username");
String password = cookieMap.get("password");
if (userService.loginJugeMent(userName, password)) {
rp.sendRedirect(rq.getContextPath()+"/index.jsp");
} else {
arg2.doFilter(arg0, arg1);
}
arg2.doFilter(arg0, arg1);
}
}
}
public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub
}
}
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