在 Spring Context @Configuration 中运行 void setup 方法 [英] Run a void setup method in Spring Context @Configuration

问题描述

我希望在我的 Spring Context 中执行几个设置方法.

I wish to perform a couple of setup methods within my Spring Context.

我目前有以下代码，但它不起作用，因为我说它们是 beans 并且没有返回类型.

I currently have the following code but it doesn't work as I am saying they are beans and have no return type.

@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 @Bean 注释的情况下通过 @Configuration 上下文自动运行此方法?

How can I run this method automatically by the @Configuration context without the @Bean annotation?

推荐答案

您可以使用 @PostConstruct 批注代替 @Bean :

You can use the @PostConstruct annotation instead of @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");
    }

    ...

}

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