package com.example.demo.security.jwt;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.filter.GenericFilterBean;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
public class JwtTokenAuthenticationFilter extends GenericFilterBean {
private JwtTokenProvider jwtTokenProvider;
public JwtTokenAuthenticationFilter(JwtTokenProvider jwtTokenProvider) {
this.jwtTokenProvider = jwtTokenProvider;
}
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain filterChain)
throws IOException, ServletException {
String token = jwtTokenProvider.resolveToken((HttpServletRequest) req);
if (token != null && jwtTokenProvider.validateToken(token)) {
Authentication auth = jwtTokenProvider.getAuthentication(token);
if (auth != null) {
SecurityContextHolder.getContext().setAuthentication(auth);
}
}
filterChain.doFilter(req, res);
}
}
