给我一个 springboot 集成 spring security oauth2 的代码

非常感谢您的提问，以下是一个简单的 Spring Boot 集成 Spring Security OAuth2 的代码示例：

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

@Autowired
private UserDetailsService userDetailsService;

@Autowired
private DataSource dataSource;

@Override
protected void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/login**", "/error**").permitAll()
.anyRequest().authenticated()
.and()
.formLogin()
.loginPage("/login")
.defaultSuccessUrl("/home")
.permitAll()
.and()
.logout()
.permitAll();
}

@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth
.jdbcAuthentication()
.dataSource(dataSource)
.usersByUsernameQuery("SELECT username, password, enabled FROM users WHERE username = ?")
.authoritiesByUsernameQuery("SELECT username, authority FROM authorities WHERE username = ?");
}

@Bean
public TokenStore tokenStore() {
return new JdbcTokenStore(dataSource);
}

@Bean
public ClientDetailsService clientDetailsService() {
JdbcClientDetailsService clientDetailsService = new JdbcClientDetailsService(dataSource);
clientDetailsService.setPasswordEncoder(passwordEncoder());
return clientDetailsService;
}

@Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}

@Override
@Bean
public AuthenticationManager authenticationManagerBean() throws Exception {
return super.authenticationManagerBean();
}

@Override
protected void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
endpoints
.tokenStore(tokenStore())
.authenticationManager(authenticationManagerBean())
.userDetailsService(userDetailsService);
}

@Override
public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
clients
.withClient("client")
.secret(passwordEncoder().encode("secret"))
.authorizedGrantTypes("password", "refresh_token")
.scopes("read", "write")
.accessTokenValiditySeconds(3600)
.refreshTokenValiditySeconds(86400);
}
}

请注意，这只是一个简单的示例，您需要根据您的实际需求进行修改和扩展。