java为什么我的Springboot应用程序没有启动？

Question

我用JHipster引导了springboot应用程序，但我一直无法启动它。它说构建成功，但不会在服务器上启动。POM中添加了一个嵌入式tomcat服务器。XML，有什么问题吗

Caused by: java.lang.IllegalArgumentException: Unable to resolve Configuration with the provided Issuer of "http://localhost:9080/auth/realms/jhipster"
    at org.springframework.security.oauth2.client.registration.ClientRegistrations.getBuilder(ClientRegistrations.java:221)
    at org.springframework.security.oauth2.client.registration.ClientRegistrations.fromIssuerLocation(ClientRegistrations.java:145)
    at org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2ClientPropertiesRegistrationAdapter.getBuilderFromIssuerIfPossible(OAuth2ClientPropertiesRegistrationAdapter.java:83)
    at org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2ClientPropertiesRegistrationAdapter.getClientRegistration(OAuth2ClientPropertiesRegistrationAdapter.java:59)
    at org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2ClientPropertiesRegistrationAdapter.lambda$getClientRegistrations$0(OAuth2ClientPropertiesRegistrationAdapter.java:53)
    at java.base/java.util.HashMap.forEach(HashMap.java:1425)
    at org.springframework.boot.autoconfigure.security.oauth2.client.OAuth2ClientPropertiesRegistrationAdapter.getClientRegistrations(OAuth2ClientPropertiesRegistrationAdapter.java:52)
    at org.springframework.boot.autoconfigure.security.oauth2.client.servlet.OAuth2ClientRegistrationRepositoryConfiguration.clientRegistrationRepository(OAuth2ClientRegistrationRepositoryConfiguration.java:49)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
    ... 118 common frames omitted
Caused by: org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://localhost:9080/auth/realms/jhipster/.well-known/openid-configuration": Connection refused: connect; nested exception is java.net.ConnectException: Connection refused: connect
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:785)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:670)
    at org.springframework.security.oauth2.client.registration.ClientRegistrations.lambda$oidc$0(ClientRegistrations.java:156)
    at org.springframework.security.oauth2.client.registration.ClientRegistrations.getBuilder(ClientRegistrations.java:209)
    ... 130 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
    at java.base/sun.nio.ch.Net.connect0(Native Method)
    at java.base/sun.nio.ch.Net.connect(Net.java:574)
    at java.base/sun.nio.ch.Net.connect(Net.java:563)
    at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588)
    at java.base/java.net.Socket.connect(Socket.java:648)
    at java.base/java.net.Socket.connect(Socket.java:597)
    at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:182)
    at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474)
    at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:569)
    at java.base/sun.net.www.http.HttpClient.<init>(HttpClient.java:242)
    at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:341)
    at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:362)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1261)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1194)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1082)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1016)
    at org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:76)
    at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
    at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:776)
    ... 133 common frames omitted

                
                         

Answer 1

你必须检查9080端口 它是否被其他流程使用 您可以通过以下命令执行：netstat-aon 然后逐个处理器终止进程：taskkill-f/pid process_id

Answer 2

在运行springboot应用程序之前，请确保KeyClope已启动，因为Jhister提供了随时可用的KeyClope配置。该应用程序试图在localhost:9080访问KeyClope

如果安装了docker和docker compose，则可以使用提供的docker compose配置，并通过docker-compose -f src/main/docker/keycloak.yml up启动KeyClope

如果你想手动启动它，你需要确保在你的KeyClope实例中设置jhipster领域