详解cas-client-autoconfig-support2.3.0-GA中CasClientConfigurerAdapter的使用及其每个方法并给代码实例

cas-client-autoconfig-support2.3.0-GA是一个用于集成CAS（Central Authentication Service）客户端的Java库，其中包含了一个名为CasClientConfigurerAdapter的类，可以通过继承该类并覆盖其中的方法来自定义CAS客户端的配置。

该类中包含以下方法：

1. configureAuthenticationFilter(AuthenticationFilter authenticationFilter)：用于配置AuthenticationFilter，该方法接收一个AuthenticationFilter对象作为参数。示例代码如下：

public class CustomCasClientConfigurer extends CasClientConfigurerAdapter {
    @Override
    public void configureAuthenticationFilter(AuthenticationFilter authenticationFilter) {
        authenticationFilter.setAuthenticationDetailsSource(new CustomAuthenticationDetailsSource());
    }
}

2. configureValidationFilter(ValidationFilter validationFilter)：用于配置ValidationFilter，该方法接收一个ValidationFilter对象作为参数。示例代码如下：

public class CustomCasClientConfigurer extends CasClientConfigurerAdapter {
    @Override
    public void configureValidationFilter(ValidationFilter validationFilter) {
        validationFilter.setRenew(true);
    }
}

3. configureHttpServletRequestWrapperFilter(HttpServletRequestWrapperFilter httpServletRequestWrapperFilter)：用于配置HttpServletRequestWrapperFilter，该方法接收一个HttpServletRequestWrapperFilter对象作为参数。示例代码如下：

public class CustomCasClientConfigurer extends CasClientConfigurerAdapter {
    @Override
    public void configureHttpServletRequestWrapperFilter(HttpServletRequestWrapperFilter httpServletRequestWrapperFilter) {
        httpServletRequestWrapperFilter.setEncoding("UTF-8");
    }
}

4. configureLogoutFilter(LogoutFilter logoutFilter)：用于配置LogoutFilter，该方法接收一个LogoutFilter对象作为参数。示例代码如下：

public class CustomCasClientConfigurer extends CasClientConfigurerAdapter {
    @Override
    public void configureLogoutFilter(LogoutFilter logoutFilter) {
        logoutFilter.setLogoutUrl("/cas/logout");
        logoutFilter.setFollowRedirects(true);
    }
}

5. configureSsoFilter(SingleSignOutFilter singleSignOutFilter)：用于配置SingleSignOutFilter，该方法接收一个SingleSignOutFilter对象作为参数。示例代码如下：

public class CustomCasClientConfigurer extends CasClientConfigurerAdapter {
    @Override
    public void configureSsoFilter(SingleSignOutFilter singleSignOutFilter) {
        singleSignOutFilter.setCasServerUrlPrefix("https://cas.example.com");
        singleSignOutFilter.setIgnoreInitConfiguration(true);
    }
}

6. configureProxyFilter(ProxyFilter proxyFilter)：用于配置ProxyFilter，该方法接收一个ProxyFilter对象作为参数。示例代码如下：

public class CustomCasClientConfigurer extends CasClientConfigurerAdapter {
    @Override
    public void configureProxyFilter(ProxyFilter proxyFilter) {
        proxyFilter.setProxyReceptorUrl("/cas/proxy/receptor");
        proxyFilter.setProxyCallbackUrl("/cas/proxy/callback");
    }
}

通过继承CasClientConfigurerAdapter并覆盖上述方法，可以实现对CAS客户端的自定义配置。在集成CAS客户端时，可以通过将自定义的CasClientConfigurerAdapter实例传入CasClientConfigurer接口的实现类中，来完成对CAS客户端的配置。例如：

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    private CasClientConfigurer casClientConfigurer;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .anyRequest().authenticated()
                .and()
            .apply(casClientConfigurer);
    }
}

在上述代码中，通过调用apply(casClientConfigurer)方法来应用自定义的CasClientConfigurerAdapter实例，完成对CAS客户端的配置。