【实战运用】SpringSecurity+Redis+Jwt实现用户认证授权

以下是一个简化的Spring Security和JWT结合使用的例子，用于用户认证和授权：

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
 
    @Autowired
    private UserDetailsService userDetailsService;
 
    @Autowired
    private JwtAuthenticationEntryPoint unauthorizedHandler;
 
    @Autowired
    private JwtTokenUtil jwtTokenUtil;
 
    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService)
                .passwordEncoder(passwordEncoder());
    }
 
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
 
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
                .csrf().disable()
                .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                .authorizeRequests()
                .antMatchers("/api/auth/**").permitAll()
                .anyRequest().authenticated();
 
        httpSecurity
                .addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
    }
 
    @Bean
    public FilterRegistrationBean jwtTokenFilter() {
        final FilterRegistrationBean registrationBean = new FilterRegistrationBean();
        registrationBean.setFilter(new JwtTokenFilter(jwtTokenUtil));
        registrationBean.addUrlPatterns("/api/*");
        return registrationBean;
    }
}

public class JwtTokenFilter extends OncePerRequestFilter {
 
    private JwtTokenUtil jwtTokenUtil;
 
    @Autowired
    public JwtTokenFilter(JwtTokenUtil jwtTokenUtil) {
        this.jwtTokenUtil = jwtTokenUtil;
    }
 
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException {
        final String requestTokenHeader = request.getHeader("Authorization");
 
        String username = null;
        String token = null;
 
        if (requestTokenHeader != null && requestTokenHeader.startsWith("Bearer ")) {
            token = requestTokenHeader.subs