配置元数据中提供的发行者“Issuer"http://localhost:9080/auth/realms/jhipster"”与所请求的发行者不匹配。

修改应用程序的配置元数据以匹配所请求的发行者。具体来说，修改OAuth2ClientProperties配置文件中的issuer-uri属性，使其与实际的发行者URL匹配。例如：

spring:
  security:
    oauth2:
      client:
        registration:
          keycloak:
            provider: keycloak
            client-id: my-client-id
            client-secret: my-client-secret
            authorization-grant-type: authorization_code
            redirect-uri: '{baseUrl}/{action}/oauth2/code/{registrationId}'
            scope: openid,profile,email
            client-name: Keycloak
            client-authentication-method: post
            authorization-uri: ${my.keycloak.auth-server-url}/realms/${my.keycloak.realm}/protocol/openid-connect/auth
            token-uri: ${my.keycloak.auth-server-url}/realms/${my.keycloak.realm}/protocol/openid-connect/token
            user-info-uri: ${my.keycloak.auth-server-url}/realms/${my.keycloak.realm}/protocol/openid-connect/userinfo
            jwk-set-uri: ${my.keycloak.auth-server-url}/realms/${my.keycloak.realm}/protocol/openid-connect/certs
            issuer-uri: ${my.keycloak.auth-server-url}/realms/${my.keycloak.realm}

在这个示例中，修改issuer-uri属性的值以匹配实际的发行者URL：

issuer-uri: ${my.keycloak.auth-server-url}/realms/${my.keycloak.realm}