要实现不同OAuth客户端的多个Springfox SecurityConfigurations，您可以按照以下步骤进行操作：

1. 创建多个SecurityConfigurations类：根据您的需要，为每个OAuth客户端创建一个单独的SecurityConfigurations类。每个类都应继承自WebSecurityConfigurerAdapter。

@Configuration
@EnableWebSecurity
public class SecurityConfigurations1 extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
            .antMatchers("/api/endpoint1").hasRole("ROLE_USER1")
            .and()
            .oauth2Login();
    }
}

@Configuration
@EnableWebSecurity
public class SecurityConfigurations2 extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
            .antMatchers("/api/endpoint2").hasRole("ROLE_USER2")
            .and()
            .oauth2Login();
    }
}

2. 在每个SecurityConfigurations类中配置OAuth客户端：使用@EnableOAuth2Client注解为每个SecurityConfigurations类启用OAuth2客户端。然后使用@ConfigurationProperties注解将OAuth2客户端的配置属性注入到配置类中。

@Configuration
@EnableWebSecurity
@EnableOAuth2Client
public class SecurityConfigurations1 extends WebSecurityConfigurerAdapter {

    @Autowired
    private OAuth2ClientContext oauth2ClientContext;

    @Bean
    @ConfigurationProperties("security.oauth2.client1")
    public ClientResources clientResources1() {
        return new ClientResources();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
            .antMatchers("/api/endpoint1").hasRole("ROLE_USER1")
            .and()
            .oauth2Login()
            .clientConfigurations(clientResources1());
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth
            .inMemoryAuthentication()
            .withUser("user1").password(passwordEncoder().encode("password")).roles("USER1");
    }

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

    @Bean
    @ConfigurationProperties("security.oauth2.client2")
    public ClientResources clientResources2() {
        return new ClientResources();
    }

    @Configuration
    @EnableResourceServer
    protected static class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {

        @Override
        public void configure(HttpSecurity http) throws Exception {
            http
                .antMatcher("/api/endpoint1")
                .authorizeRequests().anyRequest().authenticated();
        }
    }
}

@Configuration
@EnableWebSecurity
@EnableOAuth2Client
public class SecurityConfigurations2 extends WebSecurityConfigurerAdapter {

    @Autowired
    private OAuth2ClientContext oauth2ClientContext;

    @Bean
    @ConfigurationProperties("security.oauth2.client2")
    public ClientResources clientResources2() {
        return new ClientResources();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
            .antMatchers("/api/endpoint2").hasRole("ROLE_USER2")
            .and()
            .oauth2Login()
            .clientConfigurations(clientResources2());
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth
            .inMemoryAuthentication()
            .withUser("user2").password(passwordEncoder().encode("password")).roles("USER2");
    }

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

    @Configuration
    @EnableResourceServer
    protected static class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {

        @Override
        public void configure(HttpSecurity http) throws Exception {
            http
                .antMatcher("/api/endpoint2")
                .authorizeRequests().anyRequest().authenticated();
        }
    }
}

3. 创建ClientResources类：创建一个ClientResources类来保存每个OAuth客户端的配置属性。

public class ClientResources {

    private String clientId;
    private String clientSecret;
    private String accessTokenUri;
    private String userAuthorizationUri;
    private String redirectUri;

    // getters and setters

}

4. 在application.yml文件中配置OAuth客户端的属性：

security:
  oauth2:
    client1:
      clientId: client1-id
      clientSecret: client1-secret
      accessTokenUri: https