springboot跨域处理

注册跨域过滤器 CorsFilter

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@Bean     public CorsFilter corsFilter() {         CorsConfiguration config = new CorsConfiguration();         config.addAllowedHeader("*");         config.addAllowedMethod("*");         config.addAllowedOriginPattern("*");//当allowCredentials=true是设置该属性         config.setAllowCredentials(true);         UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();         source.registerCorsConfiguration("/**", config);         return new CorsFilter(source);     }

　　验证：

1、打开浏览器，F12进入控制台

2、粘贴以下代码

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var xhr = new XMLHttpRequest(); xhr.open('POST', 'http://localhost:8200/user/login', true); xhr.setRequestHeader('Content-Type', 'application/json'); var data = {"userName": "zs","password": "0192023a7bbd73250516f069df18b500"}; xhr.send(JSON.stringify(data)); xhr.onload = function(e) {     var xhr = e.target;     console.log(xhr.responseText); }