【发布时间】：2019-11-20 19:51:12
【问题描述】：
我正在学习 Spring Security，并试图运行这个项目，但它给了我一个错误。
我无法理解该怎么做。这是我正在关注的 Github link、Youtube 视频 [链接] (https://www.youtube.com/watch?v=1N-xwmoN83w)。
当我尝试运行客户端应用程序时，它运行良好，但是当我尝试运行资源服务器时它没有运行，它给了我错误：
- 无法使用提供的“http://localhost:8090/uaa/oauth/token”颁发者解析 OpenID 配置
- “http://localhost:8090/uaa/oauth/token/.well-known/openid-configuration”的 GET 请求出现 I/O 错误： 连接被拒绝：连接;嵌套异常是 java.net.ConnectException：连接被拒绝：连接
堆栈跟踪如下：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springSecurityFilterChain' defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw exception; nested exception is java.lang.IllegalArgumentException: Unable to resolve the OpenID Configuration with the provided Issuer of "http://localhost:8090/uaa/oauth/token"
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:624) ~[spring-beans-5.1.0.RC3.jar:5.1.0.RC3]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:455) ~[spring-beans-5.1.0.RC3.jar:5.1.0.RC3]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1282) ~[spring-beans-5.1.0.RC3.jar:5.1.0.RC3]
Caused by: java.lang.IllegalArgumentException: Unable to resolve the OpenID Configuration with the provided Issuer of "http://localhost:8090/uaa/oauth/token"
at org.springframework.security.oauth2.jwt.JwtDecoders.getOpenidConfiguration(JwtDecoders.java:78) ~[spring-security-oauth2-jose-5.1.0.RELEASE.jar:5.1.0.RELEASE]
at org.springframework.security.oauth2.jwt.JwtDecoders.fromOidcIssuerLocation(JwtDecoders.java:48) ~[spring-security-oauth2-jose-5.1.0.RELEASE.jar:5.1.0.RELEASE]
Caused by: org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://localhost:8090/uaa/oauth/token/.well-known/openid-configuration": Connection refused: connect; nested exception is java.net.ConnectException: Connection refused: connect
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:743) ~[spring-web-5.1.0.RC3.jar:5.1.0.RC3]
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:646) ~[spring-web-5.1.0.RC3.jar:5.1.0.RC3]
at org.springframework.security.oauth2.jwt.JwtDecoders.getOpenidConfiguration(JwtDecoders.java:76) ~[spring-security-oauth2-jose-5.1.0.RELEASE.jar:5.1.0.RELEASE]
... 43 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method) ~[na:1.8.0_181]
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_181]
at java.net.PlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_181]
at java.net.SocksSocketImpl.connect(Unknown Source) ~[na:1.8.0_181]
at java.net.Socket.connect(Unknown Source) ~[na:1.8.0_181]
请帮我解决这个错误，我是 Spring Security 新手。
【问题讨论】：
标签： spring spring-boot spring-security oauth-2.0 jwt