[Solved] oauth2(spring security) Error: method_not_allowed(Request method ‘GET’ not supported)

Error message

<error_description>Request method &#39;GET&#39; not supported</error_description>

39 is a single quotation mark


Only post is supported by default


Download and install the postman tool (or other post tools)
use post to call

Code add get method

public class OAuthSecurityConfig extends AuthorizationServerConfigurerAdapter {
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints.allowedTokenEndpointRequestMethods(HttpMethod.GET, HttpMethod.POST);// add get method



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