1.谬误形容
其实就还是我上个guacamole我的项目的衍生问题，因为要提供一个供外界拜访的接口，以后端页面填入我在其余服务器上安排的guacamole server的地址的时候（我用的firefox浏览器）在控制台能够分明地看到
CORS 头短少 'Access-Control-Allow-Origin'
这些字样
2.解决
这里先上解决办法，试了好多种只有这个能够
import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import org.springframework.context.annotation.Bean;import org.springframework.web.cors.CorsConfiguration;import org.springframework.web.cors.UrlBasedCorsConfigurationSource;import org.springframework.web.filter.CorsFilter;@Configurationpublic class GlobalCorsConfig extends WebMvcConfigurerAdapter { private CorsConfiguration buildConfig() { CorsConfiguration corsConfiguration = new CorsConfiguration(); corsConfiguration.addAllowedOrigin("*"); corsConfiguration.addAllowedHeader("*"); corsConfiguration.addAllowedMethod("*"); corsConfiguration.addExposedHeader("Content-Type"); corsConfiguration.addExposedHeader( "X-Requested-With"); corsConfiguration.addExposedHeader("accept"); corsConfiguration.addExposedHeader("Origin"); corsConfiguration.addExposedHeader( "Access-Control-Request-Method"); corsConfiguration.addExposedHeader("Access-Control-Request-Headers"); corsConfiguration.setAllowCredentials(true); return corsConfiguration; } @Bean public CorsFilter corsFilter() { UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(); source.registerCorsConfiguration("/**", buildConfig()); return new CorsFilter(source); }}创立这个类，而后在须要进行跨域的类下面加上注解@CrossOrigin
跨域问题就解决了！具体原理我还没了解，了解了补上，这里贴一下帮我解决问题的网址：https://www.w3xue.com/exp/article/20193/23459.html