在Spring Security中,令牌验证是安全认证的核心环节。本文将详细介绍如何实现JWT令牌的验证机制。
核心验证流程
首先需要配置JwtTokenFilter过滤器来拦截请求并验证令牌:
@Component
public class JwtTokenFilter extends OncePerRequestFilter {
@Autowired
private JwtTokenProvider jwtTokenProvider;
@Override
protected void doFilterInternal(HttpServletRequest request,
HttpServletResponse response,
FilterChain filterChain) throws ServletException, IOException {
String token = resolveToken(request);
if (token != null && jwtTokenProvider.validateToken(token)) {
Authentication auth = jwtTokenProvider.getAuthentication(token);
SecurityContextHolder.getContext().setAuthentication(auth);
}
filterChain.doFilter(request, response);
}
}
配置验证逻辑
在WebSecurityConfigurerAdapter中添加过滤器配置:
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private JwtTokenFilter jwtTokenFilter;
@Override
protected void configure(HttpSecurity http) throws Exception {
http.cors().and().csrf().disable()
.authorizeRequests()
.antMatchers("/api/public/**").permitAll()
.anyRequest().authenticated()
.and()
.addFilterBefore(jwtTokenFilter, UsernamePasswordAuthenticationFilter.class);
}
}
安全策略要点
- 令牌有效期设置(建议15-30分钟)
- 使用HTTPS传输
- 令牌刷新机制
- 防止重放攻击
通过以上配置,可以实现安全可靠的JWT令牌验证体系。

讨论