springboot 解决跨域问题 Access to XMLHttpRequest at 'XXX' from origin 'XX' has been blocked by CORS policy

application.java文件添加以下代码

@Beanpublic WebMvcConfigurer corsConfigurer() {return new WebMvcConfigurerAdapter() {@Overridepublic void addCorsMappings(CorsRegistry registry) {registry.addMapping("/**").allowedOrigins("*").allowedMethods("PUT", "DELETE","GET","POST").allowedHeaders("*").exposedHeaders("access-control-allow-headers","access-control-allow-methods","access-control-allow-origin","access-control-max-age","X-Frame-Options").allowCredentials(false).maxAge(3600);}};}