title: org.springframework.security.oauth2.common.exceptions.InvalidGrantException: Bad credentials
body: <p>I'm developing <strong>Spring Boot + Authorization Server +  OAuth Resource Server</strong> . In this example I can easily query though postman over <strong>spring-microservices-oauth-server</strong> and get the protected data. I created the client to access the data which postman is doing. But I am getting below error, which doesn't get clear to me. Using <code>Spring Boot</code> <code>v2.1.1.RELEASE</code> and <code>spring-cloud-dependencies</code> version <code>Greenwich.RC2</code>.</p>
  
  <blockquote>
    <p>Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is error="access_denied", error_description="Access token denied."] with root cause</p>
  </blockquote>
  
  <p>Error:</p>
  
  <pre><code>org.springframework.security.oauth2.common.exceptions.InvalidGrantException: Bad credentials
      at org.springframework.security.oauth2.common.exceptions.OAuth2ExceptionJackson2Deserializer.deserialize(OAuth2ExceptionJackson2Deserializer.java:90) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.security.oauth2.common.exceptions.OAuth2ExceptionJackson2Deserializer.deserialize(OAuth2ExceptionJackson2Deserializer.java:33) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4013) ~[jackson-databind-2.9.7.jar:2.9.7]
      at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3084) ~[jackson-databind-2.9.7.jar:2.9.7]
      at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:239) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readInternal(AbstractJackson2HttpMessageConverter.java:219) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:199) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.oauth2.client.token.OAuth2AccessTokenSupport$AccessTokenErrorHandler.handleError(OAuth2AccessTokenSupport.java:237) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:777) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:735) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:690) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.oauth2.client.token.OAuth2AccessTokenSupport.retrieveToken(OAuth2AccessTokenSupport.java:137) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.security.oauth2.client.token.grant.password.ResourceOwnerPasswordAccessTokenProvider.obtainAccessToken(ResourceOwnerPasswordAccessTokenProvider.java:47) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.security.oauth2.client.token.AccessTokenProviderChain.obtainNewAccessTokenInternal(AccessTokenProviderChain.java:148) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.security.oauth2.client.token.AccessTokenProviderChain.obtainAccessToken(AccessTokenProviderChain.java:121) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.security.oauth2.client.OAuth2RestTemplate.acquireAccessToken(OAuth2RestTemplate.java:221) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.security.oauth2.client.OAuth2RestTemplate.getAccessToken(OAuth2RestTemplate.java:173) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.security.oauth2.client.OAuth2RestTemplate.createRequest(OAuth2RestTemplate.java:105) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:730) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.oauth2.client.OAuth2RestTemplate.doExecute(OAuth2RestTemplate.java:128) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:636) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at com.oreilly.cloud.SpringMicroservicesOauthClientApplication.execute(SpringMicroservicesOauthClientApplication.java:57) ~[classes/:na]
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
      at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
      at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.security.oauth2.client.filter.OAuth2ClientContextFilter.doFilter(OAuth2ClientContextFilter.java:60) ~[spring-security-oauth2-2.3.3.RELEASE.jar:na]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90) ~[spring-boot-actuator-2.1.1.RELEASE.jar:2.1.1.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:158) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.authentication.ui.DefaultLogoutPageGeneratingFilter.doFilterInternal(DefaultLogoutPageGeneratingFilter.java:52) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:206) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:100) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:74) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) ~[spring-security-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:117) ~[spring-boot-actuator-2.1.1.RELEASE.jar:2.1.1.RELEASE]
      at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:106) ~[spring-boot-actuator-2.1.1.RELEASE.jar:2.1.1.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_171]
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_171]
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.13.jar:9.0.13]
      at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]
  </code></pre>
  
  <p>spring-microservices-oauth-server
  AuthorizationServerConfig.java</p>
  
  <pre><code>@Configuration
  public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter{
      @Autowired
      @Qualifier("authenticationManagerBean")
      private AuthenticationManager authenticationManager;
  
      @Override
      public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
          endpoints.authenticationManager(authenticationManager);
      }
  
      @Override
      public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
          clients
              .inMemory()
              .withClient("webapp")
              .secret("{noop}websecret")
              //.authorizedGrantTypes("password", "refresh_token")
              .authorizedGrantTypes("password")
              .scopes("read,write,trust")
              .accessTokenValiditySeconds(1800);
      }
  }
  </code></pre>
  
  <p>WebSecurityConfig.java</p>
  
  <pre><code>@Configuration
  public class WebSecurityConfig extends WebSecurityConfigurerAdapter{
  
      @Bean
      public AuthenticationManager authenticationManagerBean() throws Exception {
          return super.authenticationManagerBean();
      }
  
      @Override
      protected void configure(AuthenticationManagerBuilder auth) throws Exception {
          PasswordEncoder encoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
  
          // @formatter:off
          auth
              .inMemoryAuthentication()
              .withUser("user1").password(encoder.encode("password1")).roles("USER")
              .and()
              .withUser("john").password(encoder.encode("password1")).roles("USER", "ADMIN")
              .and()
              .withUser("sally").password(encoder.encode("password1")).roles("ADMIN");
          // @formatter:on
      }
  }
  </code></pre>
  
  <p>SpringMicroservicesOauthServerApplication.java</p>
  
  <pre><code>@SpringBootApplication
  @EnableAuthorizationServer
  @EnableResourceServer
  @RestController
  @EnableGlobalMethodSecurity(prePostEnabled = true)
  public class SpringMicroservicesOauthServerApplication {
  
      @RequestMapping("/resource/endpoint")
      @PreAuthorize("hasRole('ADMIN')")
      public String endpoint() {
          return "This message is protected by the resource server !!!!";
      }
  
      public static void main(String[] args) {
          SpringApplication.run(SpringMicroservicesOauthServerApplication.class, args);
      }
  }
  </code></pre>
  
  <p>This code works very fine if I call token and protected resources. The same I wanted to create it through the client UI. I created below client project.</p>
  
  <p>WebSecurityConfig.java</p>
  
  <pre><code>@Configuration
  public class WebSecurityConfig extends WebSecurityConfigurerAdapter{
  
      @Override
      protected void configure(HttpSecurity http) throws Exception {
          http.authorizeRequests()
              .anyRequest()
              .authenticated()
              .and()
              .formLogin()
              .and()
              .httpBasic();
      }
  
      @Override
      protected void configure(AuthenticationManagerBuilder auth) throws Exception {
          PasswordEncoder encoder = PasswordEncoderFactories.createDelegatingPasswordEncoder();
  
          // @formatter:off
          auth
              .inMemoryAuthentication()
              .withUser("user1").password(encoder.encode("password1")).roles("USER")
              .and()
              .withUser("john").password(encoder.encode("password1")).roles("USER", "ADMIN")
              .and()
              .withUser("sally").password(encoder.encode("password1")).roles("ADMIN");
  
          auth.eraseCredentials(false);
          // @formatter:on
      }
  }
  </code></pre>
  
  <p>SpringMicroservicesOauthClientApplication.java</p>
  
  <pre><code>@SpringBootApplication
  @EnableOAuth2Client
  @RestController
  public class SpringMicroservicesOauthClientApplication {
  
      @Autowired
      private OAuth2RestTemplate restTemplate;
  
      @Bean
      public OAuth2RestTemplate restTemplate() {
          return new OAuth2RestTemplate(resource(), new DefaultOAuth2ClientContext());
      }
  
      @Bean
      public OAuth2ProtectedResourceDetails resource() {
          ResourceOwnerPasswordResourceDetails details = new ResourceOwnerPasswordResourceDetails();
          details.setAccessTokenUri("http://localhost:9090/oauth/token");
          details.setClientId("webapp");
          details.setClientSecret("websecret");
          details.setGrantType("password");
          return details;
      }
  
      @RequestMapping("/execute")
      public String execute(Principal principal) throws URISyntaxException {
          User user = (User) ((Authentication) principal).getPrincipal();
          URI uri = new URI("http://localhost:9090/resource/endpoint");
          RequestEntity&lt;String&gt; request = new RequestEntity&lt;&gt;(HttpMethod.POST, uri);
  
          AccessTokenRequest accessTokenRequest = this.restTemplate.getOAuth2ClientContext().getAccessTokenRequest();
          accessTokenRequest.set("username", user.getUsername());
          accessTokenRequest.set("password", user.getPassword());
  
          return restTemplate.exchange(request, String.class).getBody();
      }
  
      public static void main(String[] args) {
          SpringApplication.run(SpringMicroservicesOauthClientApplication.class, args);
      }
  }
  </code></pre>
  
  <p><strong>EDIT-1:</strong> - Through Postman code works fine. Here is curl command from postman.
  But when I call the code from the Client code it gives me error.</p>
  
  <p><a href="https://i.stack.imgur.com/w89lL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/w89lL.png" alt="enter image description here"></a></p>
  
  <pre><code>curl -X POST 'http://localhost:9090/oauth/token?grant_type=password&amp;username=user1&amp;password=password1' -H 'authorization: Basic d2ViYXBwOndlYnNlY3JldA==' -H 'cache-control: no-cache' -H 'postman-token: 0b0547b9-223d-0583-3e11-abe45cfc12af'
  
  {
      "access_token": "99693b5a-6cfb-4049-8641-2f2a0cccb224",
      "token_type": "bearer",
      "refresh_token": "25b33fdf-83ad-43a8-afa9-e4d457f02244",
      "expires_in": 1799,
      "scope": "read,write,trust"
  }
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/BLflX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BLflX.png" alt="enter image description here"></a></p>