Springboot 跨域配置无效，接口访问报错解决方法

跨域配置如下，Springboot 版本为 2.4.1

///跨域访问配置@ConfigurationpublicclassCorsConfig{privateCorsConfigurationbuildConfig(){CorsConfiguration corsConfiguration=newCorsConfiguration();
        corsConfiguration.setAllowCredentials(true);//sessionid 多次访问一致
        corsConfiguration.addAllowedOrigin("*");// 允许任何域名使用
        corsConfiguration.addAllowedHeader("*");// 允许任何头
        corsConfiguration.addAllowedMethod("*");// 允许任何方法（post、get等）return corsConfiguration;}@BeanpublicCorsFiltercorsFilter(){UrlBasedCorsConfigurationSource source=newUrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**",buildConfig());// 对接口配置跨域设置returnnewCorsFilter(source);}}

问题：跨域配置无效，访问接口报如下错误

java.lang.IllegalArgumentException:When allowCredentials istrue, allowedOrigins cannot contain the special value"*"since that cannot be set on the"Access-Control-Allow-Origin" responseheader. To allow credentialstoa set of origins, list them explicitly or consider using"allowedOriginPatterns" instead.
	atorg.springframework.web.cors.CorsConfiguration.validateAllowCredentials(CorsConfiguration.java:453)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.cors.CorsConfiguration.checkOrigin(CorsConfiguration.java:557)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.cors.DefaultCorsProcessor.checkOrigin(DefaultCorsProcessor.java:174)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.cors.DefaultCorsProcessor.handleInternal(DefaultCorsProcessor.java:116)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.cors.DefaultCorsProcessor.processRequest(DefaultCorsProcessor.java:95)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:87)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)~[spring-web-5.3.2.jar:5.3.2]
	atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)~[spring-web-5.3.2.jar:5.3.2]
	atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)~[spring-web-5.3.2.jar:5.3.2]
	atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)~[spring-web-5.3.2.jar:5.3.2]
	atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)~[spring-web-5.3.2.jar:5.3.2]
	atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)~[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atorg.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[na:1.8.0_60]
	atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[na:1.8.0_60]
	atorg.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)[tomcat-embed-core-9.0.41.jar:9.0.41]
	atjava.lang.Thread.run(Thread.java:745)[na:1.8.0_60]

分析：

由于我是升级了 Springboot 到 2.4.1 版本之后才出现的这个问题，再结合报错信息提示不能使用*号设置允许的Origin，所以有两个解决方法。

解决方法：

1、降低 Springboot 版本

<modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.5.RELEASE</version><relativePath/><!-- lookup parent from repository --></parent>

2、如果不降低版本，则在跨域设置时使用setAllowedOriginPatterns方法

///跨域访问配置@ConfigurationpublicclassCorsConfig{privateCorsConfigurationbuildConfig(){CorsConfiguration corsConfiguration=newCorsConfiguration();
        corsConfiguration.setAllowCredentials(true);//sessionid 多次访问一致// 允许访问的客户端域名List<String> allowedOriginPatterns=newArrayList<>();
        allowedOriginPatterns.add("*");
        corsConfiguration.setAllowedOriginPatterns(allowedOriginPatterns);//        corsConfiguration.addAllowedOrigin("*"); // 允许任何域名使用
        corsConfiguration.addAllowedHeader("*");// 允许任何头
        corsConfiguration.addAllowedMethod("*");// 允许任何方法（post、get等）return corsConfiguration;}@BeanpublicCorsFiltercorsFilter(){UrlBasedCorsConfigurationSource source=newUrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**",buildConfig());// 对接口配置跨域设置returnnewCorsFilter(source);}}