import org.apache.catalina.filters.RequestDumperFilter;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.context.annotation.Profile;
    import org.springframework.core.annotation.Order;
    import org.springframework.security.config.annotation.web.builders.HttpSecurity;
    import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
    import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

    @SpringBootApplication
    @EnableAuthorizationServer
    @RestController
    public class AuthorizationApplication {

        public static void main(String[] args) {
            SpringApplication.run(AuthorizationApplication.class, args);
        }


        @Configuration
        static class MvcConfig extends WebMvcConfigurerAdapter {
            @Override
            public void addViewControllers(ViewControllerRegistry registry) {
                registry.addViewController("login").setViewName("login");
                registry.addViewController("/").setViewName("index");
            }
        }

        @Configuration
        @Order(-20)
        static class LoginConfig extends WebSecurityConfigurerAdapter {
            @Override
            protected void configure(HttpSecurity http) throws Exception {
                http
                        .formLogin().loginPage("/login").permitAll()
                        .and()
                        .requestMatchers()
                        .antMatchers("/", "/login", "/oauth/authorize", "/oauth/confirm_access")
                        .and()
                        .authorizeRequests()
                        .anyRequest().authenticated();
            }
        }

        @Profile("!cloud")
        @Bean
        RequestDumperFilter requestDumperFilter() {
            return new RequestDumperFilter();
        }

}

import React, { Component } from 'react';

class Login extends React.Component {
    constructor(props) {
      super(props);
      this.state = {
        username: '',
        password: ''
    };

      this.handleChange = this.handleChange.bind(this);
      this.handleSubmit = this.handleSubmit.bind(this);
    }

    handleChange(event) {
        this.setState({ [event.target.name]: event.target.value });
    }

    handleSubmit(event) {
      alert('A name was submitted: ' + this.state.username);
      event.preventDefault();
    }

    render() {
      return (
        <form action='login' method='post' onSubmit={this.handleSubmit}>
          <label>
            Username:
            <input type="text" name="username" value={this.state.username} onChange={this.handleChange} />
          </label><br />
          <label>
            Password:
            <input type="password" name="password" value={this.state.password} onChange={this.handleChange} />
          </label><br />
          <input type="submit" value="Submit" />
        </form>
      );
    }
  }
  export default Login