Zuul Proxy CORS头包含多个值,头重复两次 - Java Spring Boot CORS过滤器配置

Question

为什么我会将每个CORS标头加倍？我正在使用Zuul代理向通过API网关代理的服务发出请求.

我的弹簧安全过滤顺序必须有错误的配置.

当我访问需要身份验证的路由时,我收到如下错误:

请求通过API网关错误进行服务

XMLHttpRequest cannot load https://myservice.mydomain.com:8095/service/v1/account/txHistory?acctId=0.  
The 'Access-Control-Allow-Origin' header contains multiple values '*, *', but only one is allowed. 
Origin 'http://localhost:9000' is therefore not allowed access.

Chrome网络日志

我检查了Chrome devtools中的响应,确定CORS标头重复了两次:

所以这看起来像我的CORS过滤器每次回复被调用两次.我不知道为什么会发生这种情况.可能是我的过滤器在ChannelProcessingFilter之前添加.

API网关CORS过滤器代码:

public class SimpleCORSFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {}

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse res = (HttpServletResponse) response;
        res.setHeader("Access-Control-Allow-Origin", "*");
        res.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, PUT");
        res.setHeader("Access-Control-Max-Age", "3600");
        res.setHeader("Access-Control-Allow-Headers", "Authorization, Content-Type, Accept, x-requested-with, Cache-Control");
        chain.doFilter(request, res);
    }

    @Override
    public void destroy() {}
}

我的API网关安全配置:

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Inject
    public void setUserDetailsService(UserDetailsService userDetailsService) {
        this.userDetailsService = userDetailsService;
    }

    private UserDetailsService userDetailsService;

    @Override
    protected void configure(AuthenticationManagerBuilder authenticationManagerBuilder) throws Exception {
        authenticationManagerBuilder.userDetailsService(userDetailsService)
                .passwordEncoder(new BCryptPasswordEncoder());
    }

    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
            .sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
           .authorizeRequests()
                .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
                .antMatchers("/health","/metrics", "/v1/users/register").permitAll()
                .antMatchers("/mappings", "/v1/**", "/service/**").authenticated()
                .and()
            .httpBasic()
                .realmName("apiRealm")
                .and()
            .csrf()
                .disable()
            .headers()
                .frameOptions().disable()
            .and().addFilterBefore(new SimpleCORSFilter(), ChannelProcessingFilter.class);
    }

}

我可以通过检查标头是否为空来解决此问题,然后仅在它为空或空时设置它,尽管这似乎不是最佳解决方案.我想了解我所做的是使标题预设两次.

Answer 1

我有类似的问题,但问题是我在APIGateway和其他服务中都有CORS过滤器.如果不是你的情况那么试试这个CORS过滤器.

将其添加到API网关中具有@EnableZuulProxy的类中.这应该是我在我的配置类似的技巧.

@Bean
public CorsFilter corsFilter() {
    final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
    final CorsConfiguration config = new CorsConfiguration();
    config.setAllowCredentials(true);
    config.addAllowedOrigin("*");
    config.addAllowedHeader("*");
    config.addAllowedMethod("OPTIONS");
    config.addAllowedMethod("HEAD");
    config.addAllowedMethod("GET");
    config.addAllowedMethod("PUT");
    config.addAllowedMethod("POST");
    config.addAllowedMethod("DELETE");
    config.addAllowedMethod("PATCH");
    source.registerCorsConfiguration("/**", config);
    return new CorsFilter(source);
}

Answer 2

我也遇到了同样的问题，我将CorsFilter添加到了具有@ EnableZuulProxy的类中，但是仍然不能解决我的问题。

根据github Q＆A Zuul Access-Control- *标头重复

zuul.ignored-headers=Access-Control-Allow-Credentials, Access-Control-Allow-Origin

要将其添加到我的祖尔的bootstrap.properties中，它可以工作！！！