方法一

@Configuration
public class InterceptorConfig implements WebMvcConfigurer {


    /*跨域配置*/
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowCredentials(true)
                .allowedOriginPatterns("*")
                .allowedHeaders("*")
                .exposedHeaders("")
                .allowedMethods("GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS")
                .maxAge(3600);
    }

}

方法二

@Configuration
public class CrosConfig{
    @Bean
    public FilterRegistrationBean corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", getCorsConfig());
        FilterRegistrationBean cros = new FilterRegistrationBean(new CorsFilter(source));
        //设置优先级最高
        cros.setOrder(Ordered.HIGHEST_PRECEDENCE);
        return cros;
    }

    private CorsConfiguration getCorsConfig(){
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.setAllowCredentials(true);
        corsConfiguration.addAllowedHeader("*"); //允许所有域名访问
        corsConfiguration.addAllowedMethod("*"); //允许所有请求头
        corsConfiguration.addAllowedOriginPattern("*"); //允许所有的请求类型
        corsConfiguration.setMaxAge(3600L);
        return corsConfiguration;
    }

}

方法三

@Configuration
public class CrosConfig{

    @Bean
    public CorsWebFilter corsFilter2() {
        org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource source = new org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", getCorsConfig());
        return new CorsWebFilter(source);
    }

    private CorsConfiguration getCorsConfig(){
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.setAllowCredentials(true);
        corsConfiguration.addAllowedHeader("*"); //允许所有域名访问
        corsConfiguration.addAllowedMethod("*"); //允许所有请求头
        corsConfiguration.addAllowedOriginPattern("*"); //允许所有的请求类型
        corsConfiguration.setMaxAge(3600L);
        return corsConfiguration;
    }

}

方法四

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class SimpleCORSFilter implements Filter {

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {

        HttpServletResponse response = (HttpServletResponse) res;
        HttpServletRequest request = (HttpServletRequest) req;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Headers", "*");
        if (request.getMethod().equals(HttpMethod.OPTIONS.name())) {
            response.setStatus(HttpStatus.NO_CONTENT.value());
        } else {
            chain.doFilter(req, res);
        }
    }

    @Override
    public void init(FilterConfig filterConfig) {
    }

    @Override
    public void destroy() {
    }

}