SpringBoot vue项目发布到服务器出现跨域问题has been blocked by CORS policy: No Access-Control-Allow-Origin 和 Response to preflight request doesn’t pass access control check: It does not have HTTP ok status.

解决springboot项目和Vue项目部署到同一个服务器出现跨域请求问题
has been blocked by CORS policy: No Access-Control-Allow-Origin
网上找了很多方案 列了出来
**
解决方案
加一个过滤器和一个config配置类

@Slf4j
@Configuration
public class AccessControlAllowOriginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        log.info("经过了跨域处理过滤器。。。。。");
        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", "x-requested-with,Authorization,token, content-type");
        if (request.getMethod().equals(HttpMethod.OPTIONS.name())){
            response.setStatus(HttpStatus.NO_CONTENT.value());
        }else{
            chain.doFilter(req, response);
        }
    }

    @Override
    public void destroy() {

    }
}


@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();
        // 配置所有请求
        source.registerCorsConfiguration("/**", buildConfig());
        return new CorsFilter(source);
    }
}

这是一种解决方案
第二种
在Spring Boot中拥有大量的注解，针对跨域问题，也提供了对应的注解@CrossOrigin，使用方法如下：

	@CrossOrigin(origins = "*")
    @RequestMapping(value = "/get")
    public Result get() {
    }

但是第二种方案需要每个接口都加注解 出于统一处理的便捷性还是加个过滤器吧

以上两种种亲测都可行
但是问题来了 如果以上方式加了还报错 并且response的header正常 错误如下
Response to preflight request doesn’t pass access control check: It does not have HTTP ok status.

原因就是浏览器的预检请求失败 即option请求失败 需要后端放行option请求即可
在spring security放行option请求

.requestMatchers(CorsUtils::isPreFlightRequest).permitAll()

终于解决了！！！