Keycloak管理客户端：无法找到内容类型应用程序/ json的MessageBodyReader

Question

我是新来的keycloak和spring。我试图使用keycloak管理的客户端来创建这样在我的弹簧引导工程用户：

Keycloak kc = Keycloak.getInstance(
    "http://localhost:8080/auth", 
    "master", // the realm to log in to 
    "admin", "password", // the user 
    "admin-cli"); 

    CredentialRepresentation credential = new CredentialRepresentation(); 
    credential.setType(CredentialRepresentation.PASSWORD); 
    credential.setValue("test123"); 

    UserRepresentation user = new UserRepresentation(); 
    user.setUsername("testuser"); 
    user.setFirstName("Test"); 
    user.setLastName("User"); 
    user.setCredentials(Arrays.asList(credential)); 

    kc.realm("master").users().create(user); 

，但我不断收到此错误：

Exception in thread "main" javax.ws.rs.client.ResponseProcessingException: javax.ws.rs.ProcessingException: RESTEASY003145: Unable to find a MessageBodyReader of content-type application/json and type class org.keycloak.representations.AccessTokenResponse 
at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.extractResult(ClientInvocation.java:158) 
at org.jboss.resteasy.client.jaxrs.internal.proxy.extractors.BodyEntityExtractor.extractEntity(BodyEntityExtractor.java:60) 
at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientInvoker.invoke(ClientInvoker.java:107) 
at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientProxy.invoke(ClientProxy.java:76) 
at com.sun.proxy.$Proxy18.grantToken(Unknown Source) 
at org.keycloak.admin.client.token.TokenManager.grantToken(TokenManager.java:89) 
at org.keycloak.admin.client.token.TokenManager.getAccessToken(TokenManager.java:69) 
at org.keycloak.admin.client.token.TokenManager.getAccessTokenString(TokenManager.java:64) 
at org.keycloak.admin.client.resource.BearerAuthFilter.filter(BearerAuthFilter.java:52) 
at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.invoke(ClientInvocation.java:443) 
at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientInvoker.invoke(ClientInvoker.java:105) 
at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientProxy.invoke(ClientProxy.java:76) 
at com.sun.proxy.$Proxy26.create(Unknown Source) 
at me.phuongtm.KeycloakAdminClientDemoApplication.main(KeycloakAdminClientDemoApplication.java:68) 
    Caused by: javax.ws.rs.ProcessingException: RESTEASY003145: Unable to find a MessageBodyReader of content-type application/json and type class org.keycloak.representations.AccessTokenResponse 
at org.jboss.resteasy.core.interception.jaxrs.ClientReaderInterceptorContext.throwReaderNotFound(ClientReaderInterceptorContext.java:42) 
at org.jboss.resteasy.core.interception.jaxrs.AbstractReaderInterceptorContext.getReader(AbstractReaderInterceptorContext.java:80) 
at org.jboss.resteasy.core.interception.jaxrs.AbstractReaderInterceptorContext.proceed(AbstractReaderInterceptorContext.java:53) 
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.readFrom(ClientResponse.java:266) 
at org.jboss.resteasy.client.jaxrs.internal.ClientResponse.readEntity(ClientResponse.java:196) 
at org.jboss.resteasy.specimpl.BuiltResponse.readEntity(BuiltResponse.java:212) 
at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.extractResult(ClientInvocation.java:122) 
... 13 more 

这似乎是一个问题与RESTEASY，所以我添加了resteasy-jackson2提供的keycloak文档建议，但没有运气。

这里是我的pom.xml依赖条件：

<dependencies> 
    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-web</artifactId> 
    </dependency> 

    <dependency> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-test</artifactId> 
     <scope>test</scope> 
    </dependency> 

    <dependency> 
     <groupId>org.keycloak</groupId> 
     <artifactId>keycloak-admin-client</artifactId> 
     <version>3.2.0.Final</version> 
    </dependency> 
    <dependency> 
<groupId>javax.ws.rs</groupId> 
<artifactId>javax.ws.rs-api</artifactId> 
<version>2.0</version> 
</dependency> 
<dependency> 
    <groupId>org.jboss.resteasy</groupId> 
    <artifactId>resteasy-client</artifactId> 
    <version>3.1.4.Final</version> 
</dependency> 
<dependency> 
    <groupId>org.jboss.resteasy</groupId> 
    <artifactId>resteasy-multipart-provider</artifactId> 
    <version>3.1.4.Final</version> 
</dependency> 
<dependency> 
    <groupId>org.jboss.resteasy</groupId> 
    <artifactId>resteasy-jackson2-provider</artifactId> 
    <version>3.1.4.Final</version> 
</dependency> 
    </dependencies> 

<build> 
    <plugins> 
     <plugin> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-maven-plugin</artifactId> 
     </plugin> 
    </plugins> 
</build> 

我花了几个小时，试图找到答案，我甚至试过这种MatteoM的解决方案：

https://stackoverflow.com/a/40462534/7441720

，但没有运气。

我感谢所有帮助我能

UPDATE：

这似乎是供应商的问题：

10:06:45.027 [main] WARN org.jboss.resteasy.resteasy_jaxrs.i18n - 
RESTEASY002145: NoClassDefFoundError: Unable to load builtin provider 

org.jboss.resteasy.plugins.providers.jackson.ResteasyJackson2Provider from 
jar:file:/C:/Users/hp/.m2/repository/org/jboss/resteasy/resteasy-jackson2- 
    provider/3.1.4.Final/resteasy-jackson2-provider-3.1.4.Final.jar!/META- 
    INF/services/javax.ws.rs.ext.Providers 

我似乎无法找到解决的办法，我查了罐子和类

ResteasyJackson2Provider 

存在！

UPDATE：

从我可以告诉，这是与依赖条件的问题，我切换到摇篮（但它应该对Maven以及工作），我的新的依赖是：

compile('org.keycloak:keycloak-admin-client:3.2.1.Final') 
compile('org.jboss.resteasy:resteasy-client:3.0.14.Final') 
compile('org.jboss.resteasy:resteasy-multipart-provider:3.0.14.Final') 
compile('org.jboss.resteasy:resteasy-jackson2-provider:3.0.14.Final') 
compile('org.jboss.resteasy:resteasy-jaxb-provider:3.0.14.Final') 
compile('org.jboss.resteasy:resteasy-jettison-provider:3.0.14.Final') 
compile('org.jboss.spec.javax.ws.rs:jboss-jaxrs-api_2.0_spec:1.0.0.Final') 

至于keycloak，我创建了一个配置类与豆类：

@Bean 
    public Keycloak keycloakBeanConfig(){ 
     return KeycloakBuilder.builder().serverUrl(keycloakUrl).realm(realm) // 
       .grantType(OAuth2Constants.CLIENT_CREDENTIALS).clientId(clientId) // 
       .clientSecret(clientSecret) 
       .build(); 
    } 

Answer 1

尝试使用resteasy-jackson-provider和删除resteasy-jackson2-provider。你可以找到以下的依赖：

<dependency> 
    <groupId>org.jboss.resteasy</groupId> 
    <artifactId>resteasy-jackson-provider</artifactId> 
    <version>3.1.3.Final</version> 
</dependency>