Springboot处理配置CORS跨域请求时碰到的坑

private void writeResponse(HttpServletResponse response,
		ResponseResult<?> respResult, JSONObject reqParams) {
	PrintWriter writer = null;
	try {
		response.setCharacterEncoding("UTF-8");
		response.setContentType("application/json; charset=utf-8");
		writer = response.getWriter();
		writer.write(JSON.toJSONString(respResult));
		writer.flush();
	} catch (Exception e) {
		log.error("拦截器响应异常，respJson："+reqParams, e);
	} finally{
		if(writer != null){
			writer.close();
		}
	}
}

@Configuration
public class InterceptorConfig implements WebMvcConfigurer {
 
    @Bean
    public UserCenterInterceptor userTokenInterceptor() {
        return new UserCenterInterceptor();
    }
   
    @Override
    public void addCorsMappings(CorsRegistry registry) {
    	registry.addMapping("/**")
        .allowedMethods("GET","POST","OPTIONS")
        .allowedOrigins("你要设置的域名")
        .allowedHeaders("*")
        .allowCredentials(true);
    	WebMvcConfigurer.super.addCorsMappings(registry);
    }
}

@Configuration
public class CorsConfig {
 
    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.addAllowedHeader("*");
        corsConfiguration.addAllowedMethod("*");
        corsConfiguration.setAllowCredentials(true);
        return corsConfiguration;
    }
 
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig());
        return new CorsFilter(source);
    }
}