CORS跨越的问题
作者:互联网
总结一下迄今为止遇见的跨越问题。
前端报错:Access to XMLHttpRequest at 'http://localhost:8080/api/xxxx from origin 'http://localhost:8001' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values 'http://localhost:8001, *', but only one is allowed.
关键字:but only one is allowed.出现这个错误有几个情况,但原因都是重复设置了跨越,而请求只需要设置一次。
分为两种情况:
1.有Nginx作为分发:
修改Nginx相关配置即可:
add_header Access-Control-Allow-Origin *;
add_header Access-Control-Allow-Methods GET,POST,OPTIONS;
add_header Access-Control-Allow-Headers X-Requested-With;
2.没有设置nginx:
1.网关配置了跨越设置:在nginx设置了跨域,又在网关zuul或者gateway里设置了跨域
2.在网关设置了之后,又在业务代码里设置了跨越,比如在Controller里添加了@CrossOrigin注解
网关跨域配置:
@Bean
public CorsWebFilter corsWebFilter(){
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
CorsConfiguration corsConfiguration = new CorsConfiguration();
//1、配置跨域
corsConfiguration.addAllowedHeader("*");
corsConfiguration.addAllowedMethod("*");
corsConfiguration.addAllowedOrigin("*");
corsConfiguration.setAllowCredentials(true);
source.registerCorsConfiguration("/**",corsConfiguration);
return new CorsWebFilter(source);
}
标签:Control,问题,设置,corsConfiguration,跨越,header,Access,CORS,跨域 来源: https://www.cnblogs.com/chihsien/p/14891812.html