No ‘Access-Control-Allow-Origin‘ header is present跨域及解决

@WebFilter("/*")
public class CORSFilter implements Filter {
 
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse resp = (HttpServletResponse) servletResponse;
 
        // 告诉浏览器允许所有的域访问
        // 注意 * 不能满足带有cookie的访问,Origin 必须是全匹配
        // resp.addHeader("Access-Control-Allow-Origin", "*");
        // 解决办法通过获取Origin请求头来动态设置
        String origin = request.getHeader("Origin");
        if (StringUtils.hasText(origin)) {
            resp.addHeader("Access-Control-Allow-Origin", origin);
        }
        // 允许带有cookie访问
        resp.addHeader("Access-Control-Allow-Credentials", "true");
 
        // 告诉浏览器允许跨域访问的方法
        resp.addHeader("Access-Control-Allow-Methods", "*");
 
        // 告诉浏览器允许带有Content-Type,header1,header2头的请求访问
        // resp.addHeader("Access-Control-Allow-Headers", "Content-Type,header1,header2");
        // 设置支持所有的自定义请求头
        String headers = request.getHeader("Access-Control-Request-Headers");
        if (StringUtils.hasText(headers)) {
            resp.addHeader("Access-Control-Allow-Headers", headers);
        }
 
        // 告诉浏览器缓存OPTIONS预检请求1小时,避免非简单请求每次发送预检请求,提升性能
        resp.addHeader("Access-Control-Max-Age", "3600");
 
        chain.doFilter(request, resp);
    }
}

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {
	@Override
	public void addCorsMappings(CorsRegistry registry) {
		registry.addMapping("/api/**")
			.allowedOrigins("http://domain2.com")
			.allowedMethods("PUT", "DELETE")
			.allowedHeaders("header1", "header2", "header3")
			.exposedHeaders("header1", "header2")
			.allowCredentials(false).maxAge(3600);
	}
}

location /{
            proxy_pass http://localhost:8080/;
           
            #告诉浏览器允许跨域访问的方法
            add_header Access-Control-Allow-Methods *;
            # 告诉浏览器缓存OPTIONS预检请求1小时
            add_header Access-Control-Max-Age 3600;
            #允许带有cookie访问
            add_header Access-Control-Allow-Credentials true;
            #注意 * 不能满足带有cookie的访问,Origin 必须是全匹配,这里通过变量获取
            add_header Access-Control-Allow-Origin $http_origin;
            #设置支持所有的自定义请求头
            add_header Access-Control-Allow-Headers $http_access_control_request_headers;
            #如果预检请求,则返回成功,不需要转发到后端
            if ($request_method = OPTIONS){
                return 200;
            }
        }

#转发全部以/api开头的请求到web服务器
   location  /api
   {
        proxy_pass http://127.0.0.1:8080/api;
   }