Oauth2 (Spring Security) Error method_not_allowed (Request method ' GET ' not supported) workaround

Error message

<MethodNotAllowed><error>method_not_allowed</error><error_description>&#39;GET&#39; not supported</error_description></MethodNotAllowed>

39 is a single quotation mark

Reason

Only post is supported by default

Workaround

1. Download Install Postman tool (or other post tool)
   Using Post calls
   

2. Ways to add code to a get

   @Configurationpublicclassextends AuthorizationServerConfigurerAdapter {...@Overridepublicvoidconfigurethrows Exception {    ...    endpoints.allowedTokenEndpointRequestMethods(HttpMethod.GET, HttpMethod.POST);// add get method    ...    endpoints.tokenServices(tokenServices);}...}

Resources

StackOverflow
CSDN Blog

Oauth2 (Spring Security) Error method_not_allowed (Request method ' GET ' not supported) workaround