我正在使用Spring Boot进行简单的休息服务。为了在Angular 2中使用它，我在oauth/token端点上检索令牌时遇到了CORS问题。

Chrome中的错误消息如下。

错误信息

zone.js:101 OPTIONS http://192.168.0.9:8080/api/oauth/token 
XMLHttpRequest cannot load http://192.168.0.9:8080/api/oauth/token. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access. The response had HTTP status code 401.

相关文件如下。

MyConfig.java

@Configuration
public class MyConfig {
    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurerAdapter() {
            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("**")
                        .allowedOrigins("*").allowedMethods("POST, GET, HEAD, OPTIONS")
                .allowCredentials(true)
                .allowedHeaders("Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers")
                .exposedHeaders("Access-Control-Allow-Origin,Access-Control-Allow-Credentials")
                .maxAge(10);
            }
        };
    }
}

OAuth2ResourceServerConfig.java

@Configuration
@EnableResourceServer
class OAuth2ResourceServerConfig extends ResourceServerConfigurerAdapter {
    @Override
    public void configure(HttpSecurity http) throws Exception {
        http
            .csrf().disable()
            .anonymous()
            .and()
                .authorizeRequests()
                .antMatchers(HttpMethod.OPTIONS,"**").permitAll()
                .antMatchers("/authenticated/**").authenticated()
                ;
    }

}

请注意，正常的休息控制器端点工作正常。问题是oauth / token，选项请求返回401状态。

请给我看一些Spring Boot时的工作代码。谢谢！