java - 在Spring Context @Configuration中运行void安装方法

我希望在Spring Context中执行几个设置方法。

我目前有以下代码，但由于我说它们是beans且没有返回类型而无法正常工作。

@Configuration
@Component
public class MyServerContext {

    ...

    // Works
    @Bean
    public UserData userData() {
        UserData userData = new AWSUserDataFetcher(urlUtil()).fetchUserData();
        return userData;
    }

    // Doesn't work
    @Bean
    public void setupKeyTrustStores() {
        // Setup TrustStore & KeyStore
        System.setProperty(SYS_TRUST_STORE, userData().get(TRUST_STORE_PATH));
        System.setProperty(SYS_TRUST_STORE_PASSWORD, userData().get(TRUST_STORE_PASSWORD));
        System.setProperty(SYS_KEY_STORE, userData().get(KEY_STORE_PATH));
        System.setProperty(SYS_KEY_STORE_PASSWORD, userData().get(KEY_STORE_PASSWORD));

        // Prevents handshake alert: unrecognized_name
        System.setProperty(ENABLE_SNI_EXTENSION, "false");
    }

    ...

}

如何在没有@Configuration批注的情况下由@Bean上下文自动运行此方法？

最佳答案

您可以使用@PostConstruct注释代替@Bean:

@Configuration
@Component
public class MyServerContext {

    @Autowired
    private UserData userData; // autowire the result of userData() bean method

    @Bean
    public UserData userData() {
        UserData userData = new AWSUserDataFetcher(urlUtil()).fetchUserData();
        return userData;
    }

    @PostConstruct
    public void setupKeyTrustStores() {
        // Setup TrustStore & KeyStore
        System.setProperty(SYS_TRUST_STORE, userData.get(TRUST_STORE_PATH));
        System.setProperty(SYS_TRUST_STORE_PASSWORD, userData.get(TRUST_STORE_PASSWORD));
        System.setProperty(SYS_KEY_STORE, userData.get(KEY_STORE_PATH));
        System.setProperty(SYS_KEY_STORE_PASSWORD, userData.get(KEY_STORE_PASSWORD));

        // Prevents handshake alert: unrecognized_name
        System.setProperty(ENABLE_SNI_EXTENSION, "false");
    }

    ...

}